Condensed phosphoric acids

Industry

CPC
C01B25/24

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Parent Industries

CCHEMISTRY METALLURGY C01Inorganic chemistry C01BNON-METALLIC ELEMENTS COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C C01B25/00Phosphorus Compounds thereof

Current Industry

C01B25/24Condensed phosphoric acids

Industries

Patents Grantslast 30 patents

Information Patent Grant
Method for producing polyphosphoric acid and device for such a method
- Patent number 11,161,741
- Issue date Nov 2, 2021
- Prayon
- Bernard Heptia
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method and device for producing polyphosphoric acid
- Patent number 9,828,471
- Issue date Nov 28, 2017
- Prayon Technologies
- Alain Germeau
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Membranes, azeotropic and catalytic components
- Patent number 9,731,969
- Issue date Aug 15, 2017
- Universiteit Gent
- Wouter Ducheyne
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method and device for producing polyphosphoric acid
- Patent number 8,845,990
- Issue date Sep 30, 2014
- Prayon Technologies
- Alain Germeau
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for purification of phosphoric acid high purity polyphosphor...
- Patent number 6,861,039
- Issue date Mar 1, 2005
- Toyo Boeski Kabushiki Kaisha
- Kiyoshi Hotta
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for making polyphosphoric acid
- Patent number 6,616,906
- Issue date Sep 9, 2003
- Rhodia Inc.
- Dennis L. Myers
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Phosphation reagent
- Patent number 6,136,221
- Issue date Oct 24, 2000
- Rhodia Inc.
- Robert Lee Reierson
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Condensation polymerization of phosphorus containing compounds
- Patent number 5,951,831
- Issue date Sep 14, 1999
- Albright & Wilson Americas Limited
- John P. Godber
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Monoalkyl phosphonic acid ester production process
- Patent number 5,554,781
- Issue date Sep 10, 1996
- Robert L. Reierson
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
In-situ phosphation reagent process
- Patent number 5,550,274
- Issue date Aug 27, 1996
- Robert L. Reierson
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for working up phosphoric acid
- Patent number 4,971,778
- Issue date Nov 20, 1990
- Hoechst AG.
- Gerhard Bettermann
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Oxidation-reduction process for enhancing the color of and stabiliz...
- Patent number 4,808,391
- Issue date Feb 28, 1989
- Farmland Industries, Inc.
- David D. Leavitt
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for freeing mineral acids from heavy metals
- Patent number 4,777,028
- Issue date Oct 11, 1988
- Hoechst Aktiengesellschaft
- Klaus Schrodter
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Phosphate recovery from wet phosphoric acid purification process
- Patent number 4,684,512
- Issue date Aug 4, 1987
- Stauffer Chemical Company
- John M. Stewart
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for producing ammonium polyphosphate
- Patent number 4,637,921
- Issue date Jan 20, 1987
- James E. Sansing
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Two-stage concentration for superphosphoric acid
- Patent number 4,551,319
- Issue date Nov 5, 1985
- CdF Chimie Azote et Fertilisants, S.A.
- Pierre Sanchez
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Filtration of wet process superphosphoric acid
- Patent number 4,547,295
- Issue date Oct 15, 1985
- Texasgulf Inc.
- Jesse M. Carr
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for blending phosphoric acids of differing impurity content
- Patent number 4,521,392
- Issue date Jun 4, 1985
- Occidental Chemical Agricultural Products, Inc.
- Harold E. Mills
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for blending phosphoric acids of differing impurity content
- Patent number 4,445,926
- Issue date May 1, 1984
- Occidental Chemical Co.
- Harold E. Mills
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method of separating magnesium from wet process superphosphoric acid
- Patent number 4,409,194
- Issue date Oct 11, 1983
- Stauffer Chemical Company
- Alfred W. Petersen
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the dearsenification of polyphosphoric acid
- Patent number 4,399,114
- Issue date Aug 16, 1983
- Hoechst Aktiengesellschaft
- Alexander Maurer
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for blending phosphoric acids of differing impurity content
- Patent number 4,376,756
- Issue date Mar 15, 1983
- Occidental Chemical Company
- Harold E. Mills
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method of preparing ultraphosphoric acid
- Patent number 4,309,394
- Issue date Jan 5, 1982
- Monsanto Company
- Robert B. Hudson
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Purification of wet process phosphoric acid
- Patent number 4,296,082
- Issue date Oct 20, 1981
- Albright & Wilson Limited
- Edward J. Lowe
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Treatment of phosphoric acid
- Patent number 4,248,843
- Issue date Feb 3, 1981
- Triomf Fertilizer (Proprietary) Ltd.
- Charles S. Williams
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
Purification of wet process phosphoric acid
- Patent number 4,215,098
- Issue date Jul 29, 1980
- Albright & Wilson Limited
- Edward J. Lowe
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the dearsenication of polyphosphoric acid
- Patent number 3,991,164
- Issue date Nov 9, 1976
- Hoechst Aktiengesellschaft
- Wolfgang Scheibitz
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
3853486
- Patent number 3,853,486
- Issue date Dec 10, 1974
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
3790661
- Patent number 3,790,661
- Issue date Feb 5, 1974
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
3780161
- Patent number 3,780,161
- Issue date Dec 18, 1973
- C05 - FERTILISERS MANUFACTURE THEREOF

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR RECYCLING RESIDUAL SOLUTIONS COMPRISING PHOSPHORUS AND D...
- Publication number 20210130171
- Publication date May 6, 2021
- PRAYON
- Bernard HEPTIA
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD FOR PRODUCING POLYPHOSPHORIC ACID AND DEVICE FOR SUCH A METHOD
- Publication number 20210009419
- Publication date Jan 14, 2021
- PRAYON
- Bernard Heptia
- C01 - INORGANIC CHEMISTRY
Information Patent Application
Method and Device for Producing Polyphosphoric Acid
- Publication number 20140377138
- Publication date Dec 25, 2014
- PRAYON TECHNOLOGIES
- Alain Germeau
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Method and Device for Producing Polyphosphoric Acid
- Publication number 20120058038
- Publication date Mar 8, 2012
- Alain Germeau
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Method for making polyphosphoric acid
- Publication number 20030035768
- Publication date Feb 20, 2003
- Dennis L. Myers
- C01 - INORGANIC CHEMISTRY

Condensed phosphoric acids

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Method for producing polyphosphoric acid and device for such a method

Method and device for producing polyphosphoric acid

Membranes, azeotropic and catalytic components

Method and device for producing polyphosphoric acid

Method for purification of phosphoric acid high purity polyphosphor...

Method for making polyphosphoric acid

Phosphation reagent

Condensation polymerization of phosphorus containing compounds

Monoalkyl phosphonic acid ester production process

In-situ phosphation reagent process

Process for working up phosphoric acid

Oxidation-reduction process for enhancing the color of and stabiliz...

Process for freeing mineral acids from heavy metals

Phosphate recovery from wet phosphoric acid purification process

Process for producing ammonium polyphosphate

Two-stage concentration for superphosphoric acid

Filtration of wet process superphosphoric acid

Process for blending phosphoric acids of differing impurity content

Process for blending phosphoric acids of differing impurity content

Method of separating magnesium from wet process superphosphoric acid

Process for the dearsenification of polyphosphoric acid

Process for blending phosphoric acids of differing impurity content

Method of preparing ultraphosphoric acid

Purification of wet process phosphoric acid

Treatment of phosphoric acid

Purification of wet process phosphoric acid

Process for the dearsenication of polyphosphoric acid

3853486

3790661

3780161

Patents Applicationslast 30 patents

METHOD FOR RECYCLING RESIDUAL SOLUTIONS COMPRISING PHOSPHORUS AND D...

METHOD FOR PRODUCING POLYPHOSPHORIC ACID AND DEVICE FOR SUCH A METHOD

Method and Device for Producing Polyphosphoric Acid

Method and Device for Producing Polyphosphoric Acid

Method for making polyphosphoric acid