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FUMINORI KOBAYASHI
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Downhole tool and well-drilling method
Patent number
11,428,064
Issue date
Aug 30, 2022
Kureha Corporation
Fuminori Kobayashi
E21 - EARTH DRILLING MINING
Information
Patent Grant
Downhole tool
Patent number
11,142,678
Issue date
Oct 12, 2021
Kureha Corporation
Fuminori Kobayashi
E21 - EARTH DRILLING MINING
Information
Patent Grant
Rubber composition for downhole tools and member for downhole tools
Patent number
11,059,952
Issue date
Jul 13, 2021
Kureha Corporation
Fuminori Kobayashi
E21 - EARTH DRILLING MINING
Information
Patent Grant
Composition, composition for downhole tools, degradable rubber memb...
Patent number
10,829,614
Issue date
Nov 10, 2020
Kureha Corporation
Takuma Kobayashi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Composition, composition for downhole tools, degradable rubber memb...
Patent number
10,815,362
Issue date
Oct 27, 2020
Kureha Corporation
Takuma Kobayashi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Molded article and use of same
Patent number
10,759,097
Issue date
Sep 1, 2020
Kureha Corporation
Fuminori Kobayashi
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Stock shape for downhole tool component, downhole tool component, a...
Patent number
10,738,561
Issue date
Aug 11, 2020
Kureha Corporation
Fuminori Kobayashi
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Polyglycolic acid molded article, component for downhole tool, and...
Patent number
9,868,231
Issue date
Jan 16, 2018
Kureha Corporation
Mizuki Saito
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Production method for aliphatic polyester
Patent number
9,080,013
Issue date
Jul 14, 2015
Kureha Corporation
Tatsuaki Miyashita
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for producing aliphatic polyester reduced in residual cycli...
Patent number
8,658,758
Issue date
Feb 25, 2014
Kureha Corporation
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polyglycolic acid resin composition
Patent number
8,362,158
Issue date
Jan 29, 2013
Kureha Corporation
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for controlling water resistance of polyglycolic acid resin
Patent number
8,318,837
Issue date
Nov 27, 2012
Kureha Corporation
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polyglycolic acid resin particle composition and process for produc...
Patent number
8,304,500
Issue date
Nov 6, 2012
Kureha Corporation
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Aromatic polyester resin composition
Patent number
8,163,866
Issue date
Apr 24, 2012
Kureha Corporation
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Aromatic polyester resin composition and process for production the...
Patent number
8,133,955
Issue date
Mar 13, 2012
Kureha Corporation
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for producing polyglycolic acid resin composition
Patent number
7,728,100
Issue date
Jun 1, 2010
Kureha Corporation
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for producing aliphatic polyester
Patent number
7,538,178
Issue date
May 26, 2009
Kureha Corporation
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for producing aliphatic polyester
Patent number
7,538,179
Issue date
May 26, 2009
Kureha Corporation
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for producing aliphatic polyester composition
Patent number
7,501,464
Issue date
Mar 10, 2009
Kureha Corporation
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
Information
Patent Application
MOLDED BODY, DOWNHOLE TOOL MEMBER, AND DOWNHOLE TOOL
Publication number
20240166848
Publication date
May 23, 2024
Kureha Corporation
Takenori TOSE
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
GLYCOLIC ACID COPOLYMER COMPOSITION AND SOLIDIFICATION/EXTRUSION-MO...
Publication number
20240166847
Publication date
May 23, 2024
Kureha Corporation
Motoharu SHODA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
DOWNHOLE TOOL AND WELL-DRILLING METHOD
Publication number
20210246756
Publication date
Aug 12, 2021
Kureha Corporation
Fuminori KOBAYASHI
E21 - EARTH DRILLING MINING
Information
Patent Application
DOWNHOLE TOOL
Publication number
20210246355
Publication date
Aug 12, 2021
Kureha Corporation
Fuminori KOBAYASHI
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
DOWNHOLE TOOL MEMBER AND MANUFACTURING METHOD THEREOF
Publication number
20200207949
Publication date
Jul 2, 2020
Kureha Corporation
Takuma KOBAYASHI
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
RUBBER COMPOSITION FOR DOWNHOLE TOOLS AND MEMBER FOR DOWNHOLE TOOLS
Publication number
20200071486
Publication date
Mar 5, 2020
Kureha Corporation
Fuminori Kobayashi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
MOLDED ARTICLE AND USE OF SAME
Publication number
20190358873
Publication date
Nov 28, 2019
Kureha Corporation
Fuminori Kobayashi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
COMPOSITION, COMPOSITION FOR DOWNHOLE TOOLS, DEGRADABLE RUBBER MEMB...
Publication number
20190300676
Publication date
Oct 3, 2019
Kureha Corporation
Takuma KOBAYASHI
E21 - EARTH DRILLING MINING
Information
Patent Application
STOCK SHAPE FOR DOWNHOLE TOOL COMPONENT, DOWNHOLE TOOL COMPONENT, A...
Publication number
20190017346
Publication date
Jan 17, 2019
Kureha Corporation
FUMINORI KOBAYASHI
B22 - CASTING POWDER METALLURGY
Information
Patent Application
COMPOSITION, COMPOSITION FOR DOWNHOLE TOOLS, DEGRADABLE RUBBER MEMB...
Publication number
20190002667
Publication date
Jan 3, 2019
Kureha Corporation
Takuma KOBAYASHI
E21 - EARTH DRILLING MINING
Information
Patent Application
ALIPHATIC POLYESTER COMPOSITION, MOLDED PRODUCT, AND MANUFACTURING...
Publication number
20180022868
Publication date
Jan 25, 2018
Kureha Corporation
HIROYUKI SATO
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
TEMPORARY PLUGGING AGENT FOR WELL DRILLING
Publication number
20160298017
Publication date
Oct 13, 2016
Kureha Corporation
TAKEO TAKAHASHI
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
POLYGLYCOLIC ACID MOLDED ARTICLE, COMPONENT FOR DOWNHOLE TOOL, AND...
Publication number
20160289374
Publication date
Oct 6, 2016
Kureha Corporation
MIZUKI SAITO
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
PRODUCTION METHOD FOR ALIPHATIC POLYESTER
Publication number
20150025216
Publication date
Jan 22, 2015
Kureha Corporation
Tatsuaki Miyashita
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
AROMATIC POLYESTER RESIN COMPOSITION
Publication number
20120178870
Publication date
Jul 12, 2012
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
METHOD FOR PRODUCING SOLID POLYGLYCOLIC ACID-BASED RESIN COMPOSITION
Publication number
20120046414
Publication date
Feb 23, 2012
Kureha Corporation
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
AROMATIC POLYESTER RESIN COMPOSITION
Publication number
20110105699
Publication date
May 5, 2011
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
AROMATIC POLYESTER RESIN MOLDINGS AND PROCESS FOR PRODUCTION THEREOF
Publication number
20100093948
Publication date
Apr 15, 2010
Kureha Corporation
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
AROMATIC POLYESTER RESIN COMPOSITION
Publication number
20100087589
Publication date
Apr 8, 2010
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
AROMATIC POLYESTER RESIN COMPOSITION AND PROCESS FOR PRODUCTION THE...
Publication number
20100063219
Publication date
Mar 11, 2010
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Method for Controlling Water Resistance of Polyglycolid Acid Resin
Publication number
20090298979
Publication date
Dec 3, 2009
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Polyglycolic Acid Resin Composition
Publication number
20090171039
Publication date
Jul 2, 2009
Kureha Corporation
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Polyglycolic Acid Resin Particle Composition and Process for Produc...
Publication number
20090131602
Publication date
May 21, 2009
Kureha Corporation
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Process for Producing Polyglycolic Acid Resin Composition
Publication number
20090118462
Publication date
May 7, 2009
Kureha Corporation
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Process for Producing Aliphatic Polyester Reduced in Residual Cycli...
Publication number
20070244293
Publication date
Oct 18, 2007
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Process for producing aliphatic polyester composition
Publication number
20070100037
Publication date
May 3, 2007
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Process for producing aliphatic polyester
Publication number
20070073033
Publication date
Mar 29, 2007
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Process for producing aliphatic polyester
Publication number
20070073032
Publication date
Mar 29, 2007
Hiroyuki Sato
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...