Complex esters

Industry

CPC
C10M2207/30

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Parent Industries

CCHEMISTRY METALLURGY C10Petroleum, gas C10MLUBRICATING COMPOSITIONS USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions

Current Industry

C10M2207/30Complex esters

Industries

Patents Grantslast 30 patents

Information Patent Grant
Estolide composition and process for making estolides
- Patent number 12,091,628
- Issue date Sep 17, 2024
- TOTALENERGIES ONETECH
- Delphine Crozet
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Grant
Method for producing estolide esters and composition of estolide es...
- Patent number 12,077,493
- Issue date Sep 3, 2024
- TOTALENERGIES ONETECH
- Delphine Crozet
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Working fluid composition for refrigerator, and refrigerator oil
- Patent number 11,993,742
- Issue date May 28, 2024
- ENEOS Corporation
- Satoshi Nagai
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Lubricating base oils from esterified alkoxylated polyols using sat...
- Patent number 11,807,826
- Issue date Nov 7, 2023
- Universtiy of South Carolina
- Zachary Hunt
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Ester compounds, method for the production thereof and use thereof
- Patent number 11,795,134
- Issue date Oct 24, 2023
- Kluber Lubrication Munchen SE & Co. KG
- Tobias Betke
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information Patent Grant
Lubricant composition for a gas engine
- Patent number 11,697,785
- Issue date Jul 11, 2023
- Total Marketing Services
- Sophie Oppilliart
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Biodegradable lubricant with tailored hydrolytic stability and impr...
- Patent number 11,680,218
- Issue date Jun 20, 2023
- Tetramer Technologies, LLC
- Zachary J. Hunt
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Estolide esters and use thereof as a base oil in lubricants
- Patent number 11,591,535
- Issue date Feb 28, 2023
- PETER GREVEN GmbH & Co. KG
- Wilhelm Huber
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Method for producing biolubricant from vegetable oil, and biolubricant
- Patent number 11,492,567
- Issue date Nov 8, 2022
- Petroleo Brasileiro S.A.- Petrobras
- Stephanie De Oliveira Souza
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Refrigerator oil
- Patent number 11,453,839
- Issue date Sep 27, 2022
- ENEOS Corporation
- Yohei Shono
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Lubricating base oils from esterified alkoxylated polyols using sat...
- Patent number 11,230,682
- Issue date Jan 25, 2022
- Tetramer Technologies, LLC
- Zachary Hunt
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Liquid anti-friction composition
- Patent number 11,186,796
- Issue date Nov 30, 2021
- PATECH FINE CHEMICALS CO., LTD.
- Wei-Chieh Liang
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Ecofriendly and biodegradable lubricant formulation and process for...
- Patent number 11,142,718
- Issue date Oct 12, 2021
- Council of Scientific and Industrial Research
- Ponnekanti Nagendramma
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Ester compounds, method for the preparation thereof and use thereof
- Patent number 11,117,854
- Issue date Sep 14, 2021
- Kluber Lubrication Munchen SE & Co. KG
- Stefan Seemeyer
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Base oil and lubricant oil composition including the same
- Patent number 11,111,450
- Issue date Sep 7, 2021
- PATECH FINE CHEMICALS CO., LTD.
- Wei-Chieh Liang
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Lubricating oil composition
- Patent number 10,961,479
- Issue date Mar 30, 2021
- NOF Corporation
- Hideki Kawamoto
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Use of a hydrocarbyl-substituted salicylic acid detergent as an inh...
- Patent number 10,907,111
- Issue date Feb 2, 2021
- CASTROL LIMITED
- Aldo Guiducci
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Manufacturing method of lubricant composition and lubricant composi...
- Patent number 10,889,778
- Issue date Jan 12, 2021
- FUJIFILM Cornoration
- Kunihiko Kodama
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Composition for heat cycle system, and heat cycle system
- Patent number 10,851,276
- Issue date Dec 1, 2020
- AGC Inc.
- Masato Fukushima
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Ester compounds, method for the production thereof and use thereof
- Patent number 10,829,436
- Issue date Nov 10, 2020
- Kluber Lubrication Munchen SE & Co. KG
- Tobias Betke
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information Patent Grant
Lubricated system comprising a DLC surface
- Patent number 10,800,993
- Issue date Oct 13, 2020
- Croda International PLC
- Gareth Moody
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Refrigerating machine oil and refrigerating machine working fluid c...
- Patent number 10,723,926
- Issue date Jul 28, 2020
- JXTG NIPPON OIL & ENERGY CORPORATION
- Takeshi Okido
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Lubricant base oil and lubricating oil composition
- Patent number 10,717,942
- Issue date Jul 21, 2020
- NOF Corporation
- Hideki Kawamoto
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Lubricant base oil
- Patent number 10,711,217
- Issue date Jul 14, 2020
- NOF Corporation
- Shunsuke Monjiyama
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Bio-based estolide compositions
- Patent number 10,562,840
- Issue date Feb 18, 2020
- The United States of America, as represented by the Secretary of Agriculture
- Steven C. Cermak
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Gun lubricant
- Patent number 10,519,391
- Issue date Dec 31, 2019
- Dane Bush
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Use of a complex ester to reduce fuel consumption
- Patent number 10,465,138
- Issue date Nov 5, 2019
- BASF SE
- Marc Walter
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Composition for heat cycle system, and heat cycle system
- Patent number 10,358,591
- Issue date Jul 23, 2019
- AGC Inc.
- Masato Fukushima
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Sustainable base oils for lubricants
- Patent number 10,336,958
- Issue date Jul 2, 2019
- Resinate Materials Group, Inc.
- Woo-Sung Bae
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Compositions comprising estolide compounds and methods of making an...
- Patent number 10,240,025
- Issue date Mar 26, 2019
- Biosynthetic Technologies, LLC
- Jeremy Forest
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

Information Patent Application
WORKING FLUID, FREEZER, AND FREEZER OIL
- Publication number 20240018437
- Publication date Jan 18, 2024
- ENEOS Corporation
- Yuya MIZUTANI
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
TRANSMISSION FLUID
- Publication number 20240002744
- Publication date Jan 4, 2024
- Shell Oil Company
- Leonard Joachim KIECKEBUSCH
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
PROCESS FOR CONVERTING BIOSOURCED TRIGLYCERIDES INTO A SINGLE-PHASE...
- Publication number 20230357666
- Publication date Nov 9, 2023
- Autarcycle Inc.
- Alain Rouillard
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
BIODEGRADABLE LUBRICANT WITH TAILORED HYDROLYTIC STABILITY AND IMPR...
- Publication number 20230323231
- Publication date Oct 12, 2023
- Tetramer Technologies, LLC
- Zachary J. Hunt
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
METHOD FOR PRODUCING ESTOLIDE ESTERS AND COMPOSITION OF ESTOLIDE ES...
- Publication number 20230219876
- Publication date Jul 13, 2023
- TOTALENERGIES ONETECH
- Delphine CROZET
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
ESTOLIDE COMPOSITION AND PROCESS FOR MAKING ESTOLIDES
- Publication number 20230090084
- Publication date Mar 23, 2023
- TOTALENERGIES ONETECH
- Delphine CROZET
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Application
ESTER COMPOUND AND PREPARATION METHOD THEREFOR AND USES THEREOF
- Publication number 20230012456
- Publication date Jan 12, 2023
- China Petroleum and Chemical Corporation
- Yao ZHANG
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
WORKING FLUID COMPOSITION FOR REFRIGERATOR, AND REFRIGERATOR OIL
- Publication number 20220325159
- Publication date Oct 13, 2022
- ENEOS Corporation
- Satoshi NAGAI
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
ESTOLIDE ESTERS AND USE THEREOF AS A BASE OIL IN LUBRICANTS
- Publication number 20220112439
- Publication date Apr 14, 2022
- PETER GREVEN GmbH & Co. KG
- Wilhelm HUBER
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
Lubricating Base Oils from Esterified Alkoxylated Polyols Using Sat...
- Publication number 20220106535
- Publication date Apr 7, 2022
- Tetramer Technologies, LLC
- Zachary Hunt
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
COMPOSITIONS COMPRISING ESTOLIDE COMPOUNDS AND METHODS OF MAKING AN...
- Publication number 20210347962
- Publication date Nov 11, 2021
- BIOSYNTHETIC TECHNOLOGIES, LLC
- Jakob Bredsguard
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METHOD FOR PRODUCING BIOLUBRICANT FROM VEGETABLE OIL, AND BIOLUBRICANT
- Publication number 20210230495
- Publication date Jul 29, 2021
- PETROLEO BRASILEIRO S.A. - PETROBRAS
- Stephanie DE OLIVEIRA SOUZA
- C07 - ORGANIC CHEMISTRY
Information Patent Application
BIODEGRADABLE LUBRICANT WITH TAILORED HYDROLYTIC STABILITY AND IMPR...
- Publication number 20210171851
- Publication date Jun 10, 2021
- Tetramer Technologies, LLC
- Zachary J. Hunt
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Novel Ester Compounds, Method for the Production Thereof and Use Th...
- Publication number 20210061750
- Publication date Mar 4, 2021
- KLUBER LUBRICATION MUNCHEN SE & Co. KG
- Tobias Betke
- C07 - ORGANIC CHEMISTRY
Information Patent Application
LIQUID ANTI-FRICTION COMPOSITION
- Publication number 20210009915
- Publication date Jan 14, 2021
- PATECH FINE CHEMICALS CO., LTD.
- Wei-Chieh LIANG
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
LUBRICATING OIL COMPOSITION
- Publication number 20200308502
- Publication date Oct 1, 2020
- NOF Corporation
- Hideki KAWAMOTO
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
ECOFRIENDLY AND BIODEGRADABLE LUBRICANT FORMULATION AND PROCESS FOR...
- Publication number 20200299602
- Publication date Sep 24, 2020
- Council of Scientific and Industrial Research
- Ponnekanti Nagendramma
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
Novel Ester Compounds, Method for the Production Thereof and Use Th...
- Publication number 20200140370
- Publication date May 7, 2020
- KLUBER LUBRICATION MUNCHEN SE & Co. KG
- Tobias Betke
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
Novel Ester Compounds, Method for the Preparation Thereof and Use T...
- Publication number 20200071256
- Publication date Mar 5, 2020
- Kübler Lubrication München SE & Co. KG
- Stefan Seemeyer
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Lubricating Base Oils from Esterified Alkoxylated Polyols Using Sat...
- Publication number 20190367831
- Publication date Dec 5, 2019
- Tetramer Technologies, LLC
- Zachary Hunt
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
COMPOSITION FOR HEAT CYCLE SYSTEM, AND HEAT CYCLE SYSTEM
- Publication number 20190322916
- Publication date Oct 24, 2019
- AGC Inc.
- Masato Fukushima
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
COMPOSITIONS COMPRISING ESTOLIDE COMPOUNDS AND METHODS OF MAKING AN...
- Publication number 20190292350
- Publication date Sep 26, 2019
- BIOSYNTHETIC TECHNOLOGIES, LLC
- Jakob BREDSGUARD
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
LUBRICANT BASE OIL
- Publication number 20190241823
- Publication date Aug 8, 2019
- NOF Corporation
- Shunsuke MONJIYAMA
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
LUBRICANT BASE OIL AND LUBRICATING OIL COMPOSITION
- Publication number 20190161695
- Publication date May 30, 2019
- NOF Corporation
- Hideki KAWAMOTO
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
BIO-BASED ESTOLIDE COMPOSITIONS
- Publication number 20190092715
- Publication date Mar 28, 2019
- The United States of America, as Represented by the Secretary of Agriculture
- Steven C. Cermak
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
USE OF A COMPLEX ESTER TO REDUCE FUEL CONSUMPTION
- Publication number 20180305631
- Publication date Oct 25, 2018
- BASF SE
- Marc Walter
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
ESTOLIDE COMPOSITIONS EXHIBITING HIGH OXIDATIVE STABILITY
- Publication number 20180171254
- Publication date Jun 21, 2018
- BIOSYNTHETIC TECHNOLOGIES, LLC
- Jakob BREDSGUARD
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Application
Use of Glycerides of Hydroxy Polycarboxylic Acids as Anti-Camshaft-...
- Publication number 20180016511
- Publication date Jan 18, 2018
- Castrol Limited
- Aldo Guiducci
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
COMPOSITION FOR LOW TEMPERATURE
- Publication number 20170166828
- Publication date Jun 15, 2017
- BASF SE
- Dirk RETTEMEYER
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
HEAT PUMP APPARATUS
- Publication number 20170121581
- Publication date May 4, 2017
- Asahi Glass Company, Limited
- Shinya HORIIKE
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Complex esters

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Estolide composition and process for making estolides

Method for producing estolide esters and composition of estolide es...

Working fluid composition for refrigerator, and refrigerator oil

Lubricating base oils from esterified alkoxylated polyols using sat...

Ester compounds, method for the production thereof and use thereof

Lubricant composition for a gas engine

Biodegradable lubricant with tailored hydrolytic stability and impr...

Estolide esters and use thereof as a base oil in lubricants

Method for producing biolubricant from vegetable oil, and biolubricant

Refrigerator oil

Lubricating base oils from esterified alkoxylated polyols using sat...

Liquid anti-friction composition

Ecofriendly and biodegradable lubricant formulation and process for...

Ester compounds, method for the preparation thereof and use thereof

Base oil and lubricant oil composition including the same

Lubricating oil composition

Use of a hydrocarbyl-substituted salicylic acid detergent as an inh...

Manufacturing method of lubricant composition and lubricant composi...

Composition for heat cycle system, and heat cycle system

Ester compounds, method for the production thereof and use thereof

Lubricated system comprising a DLC surface

Refrigerating machine oil and refrigerating machine working fluid c...

Lubricant base oil and lubricating oil composition

Lubricant base oil

Bio-based estolide compositions

Gun lubricant

Use of a complex ester to reduce fuel consumption

Composition for heat cycle system, and heat cycle system

Sustainable base oils for lubricants

Compositions comprising estolide compounds and methods of making an...

Patents Applicationslast 30 patents

WORKING FLUID, FREEZER, AND FREEZER OIL

TRANSMISSION FLUID

PROCESS FOR CONVERTING BIOSOURCED TRIGLYCERIDES INTO A SINGLE-PHASE...

BIODEGRADABLE LUBRICANT WITH TAILORED HYDROLYTIC STABILITY AND IMPR...

METHOD FOR PRODUCING ESTOLIDE ESTERS AND COMPOSITION OF ESTOLIDE ES...

ESTOLIDE COMPOSITION AND PROCESS FOR MAKING ESTOLIDES

ESTER COMPOUND AND PREPARATION METHOD THEREFOR AND USES THEREOF

WORKING FLUID COMPOSITION FOR REFRIGERATOR, AND REFRIGERATOR OIL

ESTOLIDE ESTERS AND USE THEREOF AS A BASE OIL IN LUBRICANTS

Lubricating Base Oils from Esterified Alkoxylated Polyols Using Sat...

COMPOSITIONS COMPRISING ESTOLIDE COMPOUNDS AND METHODS OF MAKING AN...

METHOD FOR PRODUCING BIOLUBRICANT FROM VEGETABLE OIL, AND BIOLUBRICANT

BIODEGRADABLE LUBRICANT WITH TAILORED HYDROLYTIC STABILITY AND IMPR...

Novel Ester Compounds, Method for the Production Thereof and Use Th...

LIQUID ANTI-FRICTION COMPOSITION

LUBRICATING OIL COMPOSITION

ECOFRIENDLY AND BIODEGRADABLE LUBRICANT FORMULATION AND PROCESS FOR...

Novel Ester Compounds, Method for the Production Thereof and Use Th...

Novel Ester Compounds, Method for the Preparation Thereof and Use T...

Lubricating Base Oils from Esterified Alkoxylated Polyols Using Sat...

COMPOSITION FOR HEAT CYCLE SYSTEM, AND HEAT CYCLE SYSTEM

COMPOSITIONS COMPRISING ESTOLIDE COMPOUNDS AND METHODS OF MAKING AN...

LUBRICANT BASE OIL

LUBRICANT BASE OIL AND LUBRICATING OIL COMPOSITION

BIO-BASED ESTOLIDE COMPOSITIONS

USE OF A COMPLEX ESTER TO REDUCE FUEL CONSUMPTION

ESTOLIDE COMPOSITIONS EXHIBITING HIGH OXIDATIVE STABILITY

Use of Glycerides of Hydroxy Polycarboxylic Acids as Anti-Camshaft-...

COMPOSITION FOR LOW TEMPERATURE

HEAT PUMP APPARATUS