Assignee

HOECHST FRANCE

FR93 patents

Top patents by PatentIndex Score

US5258448ANov 2, 1993

Absorbent polymers, manufacturing process and their use in particular for sanitary articles

HOECHST FRANCE26 citations93

US5225041AJul 6, 1993

Refining process for paper pulp using a silica sol

HOECHST FRANCE39 citations92

US5147921ASep 15, 1992

Powdered superabsorbents, containing silica, their preparation process and their use

HOECHST FRANCE29 citations92

US5300240AApr 5, 1994

Finishing process for textiles, finishing bath for textiles using phosphinicosuccinic acid, phosphinicobissuccinic acid or their mixtures, finished textiles and use of said acids as finishes

HOECHST FRANCE25 citations91

US5273549ADec 28, 1993

Alkanepolycarboxylic acid derivatives as cross-linking agents of cellulose, new derivatives and textile finishes

HOECHST FRANCE53 citations89

US5385680AJan 31, 1995

Finishing process for textiles, finishing bath for textiles using phosphinicosuccinic acid, phosphinicobissuccinic acid or their mixtures, finished textiles and use of said acids as finishes

HOECHST FRANCE34 citations85

US4968774ANov 6, 1990

Amino-plastic resins intended for the improvement of cellulosed fibres and their application

HOECHST FRANCE28 citations83

US5284635AFeb 8, 1994

Process for the elimination of hydrogen sulfide by using water-in-oil emulsions

HOECHST FRANCE44 citations81

US4968373ANov 6, 1990

Aqueous dispersion of styrene-acrylic polymers and its application to water resistant adhesive compositions especially suited for tiling

HOECHST FRANCE16 citations81

US4396752AAug 2, 1983

Strong cationic polyelectrolytes in powder form based on acrylamide and quaternized or salified dimethylaminoethyl acrylate for flocculation of solid material suspensions and coalescence of emulsions

HOECHST FRANCE24 citations80

US4948827AAug 14, 1990

Methyl-2-tertiary butyl-5-thiophenol, its preparation process and its use

HOECHST FRANCE15 citations74

US4595751AJun 17, 1986

Perhydro-[2,3-c]-oxazolo-1,4-oxazines and their process of preparation

HOECHST FRANCE9 citations74

US4156093AMay 22, 1979

Process for increasing the production or recovery yields of hemiacetal-esters of glyoxylic acid

HOECHST FRANCE8 citations74

US5395440AMar 7, 1995

Compositions for the treatment of paper and/or cardboard surfaces and their use in the paper industry

HOECHST FRANCE11 citations73

US5306833AApr 26, 1994

Coating process for papers and cardboards and its use for obtaining paper which has a good smoothness

HOECHST FRANCE18 citations73

US5095128AMar 10, 1992

Preparation process for piperonal

HOECHST FRANCE11 citations73

US5091566AFeb 25, 1992

Process for the manufacture of aqueous solutions of glyoxylic acid

HOECHST FRANCE10 citations73

US5053527AOct 1, 1991

Process for the manufacture of alkyl pyruvates

HOECHST FRANCE8 citations73

US4923921AMay 8, 1990

Aqueous dispersion of styrene-acrylic polymers and its application to water resistant adhesive compositions especially suited for tiling

HOECHST FRANCE11 citations73

US5536481AJul 16, 1996

Use of cyclic aminals of glyoxylic acid for trapping hydrogen sulphide

HOECHST FRANCE11 citations72

US5382667AJan 17, 1995

Substituted succinimides as corrosion inhibitors

HOECHST FRANCE10 citations72

US4959061ASep 25, 1990

Hydrophilic polymer based on acrylic acid and alkali metal acrylate, its method of preparation and its application as an absorbent, in particular of a physiological solution

HOECHST FRANCE10 citations72

US4854934AAug 8, 1989

Substituted ureas for ennobling cellulose fibres

HOECHST FRANCE11 citations72

US4481116ANov 6, 1984

Cationic aminoplastic resin, preparation process and application thereof to water treatment

HOECHST FRANCE14 citations72

US4319013AMar 9, 1982

Powdered cationic polyelectrolytes, based on acrylamide and quaternized or salified dimethyl-aminoethyl acrylate, process for producing them

HOECHST FRANCE16 citations72

US5262238ANov 16, 1993

Cationic copolymers which are insoluble in water, new dispensions and their use in the coating of papers

HOECHST FRANCE11 citations71

US5223175AJun 29, 1993

Water-in-oil emulsions and their use in the elimination of hydrogen sulphide

HOECHST FRANCE18 citations71

US5157090AOct 20, 1992

Glycerol derivatives, their preparation process, cross-linking compositions containing them, and their use in the textile industry

HOECHST FRANCE8 citations71

US5053460AOct 1, 1991

Hydrophilic polymer based on acrylic acid and alkali metal acrylate, its preparation process and its use as an absorbing agent

HOECHST FRANCE5 citations70

US4918139AApr 17, 1990

Aqueous dispersions of thermally cross-linkable polymers based on alkyl (meth)acrylate, the process for their preparation and their use in particular as binders and/or impregnation agents

HOECHST FRANCE13 citations69

US4835320AMay 30, 1989

Process for the preparation of glyoxal monoactals

HOECHST FRANCE12 citations69

US5138096AAug 11, 1992

New continuous industrial manufacturing process for an aqueous solution of glyoxylic acid

HOECHST FRANCE7 citations68

US4590249AMay 20, 1986

Cationic ampholytic tetrapolymers and cosmetic compositions containing them

HOECHST FRANCE15 citations68

US4581402AApr 8, 1986

Novel stable water in oil dispersions of hydrosoluble cationic polymers based on salified or quaternized dimethylaminoethyl acrylate, process of preparation thereof and application thereof as flocculents

HOECHST FRANCE17 citations68

US5292958AMar 8, 1994

Process for eliminating the diethanolamine present in triethanolamine and preparation process for purified triethanolamine

HOECHST FRANCE16 citations67

US5426239AJun 20, 1995

Continuous process for the industrial manufacture of dimethoxyethanal

HOECHST FRANCE12 citations66

US5215542AJun 1, 1993

Process for fleshing skins

HOECHST FRANCE9 citations65

US4978784ADec 18, 1990

Process for industrial manufacture of sodium parahydroxymandelate

HOECHST FRANCE4 citations63

US4602106AJul 22, 1986

Process for producing hydroxyalkylaminoacetic acids

HOECHST FRANCE5 citations63

US5442094AAug 15, 1995

Sodium salt of 1-menthyloxycarbonyl 1-hydroxy methanesulphonic acid, its preparation process and its use for obtaining L(-)menthyl glyoxylate

HOECHST FRANCE1 citations62

US5266162ANov 30, 1993

Process for coating papers and its use in flexographic printing

HOECHST FRANCE6 citations62

US5130110AJul 14, 1992

Process for obtaining refractory metal oxides based on silica by sol-gel route in aqueous medium

HOECHST FRANCE17 citations62

US4851577AJul 25, 1989

New substituted derivatives of N-ethyl(meth)acrylamide and a method for the preparation thereof

HOECHST FRANCE11 citations62

US4810822AMar 7, 1989

Pure anhydrous crystallized acrylamidoglycolic acid and a method for the preparation thereof

HOECHST FRANCE2 citations62

US4692226ASep 8, 1987

Process to manufacture glyoxylic acid by electrochemical reduction of oxalic acid

HOECHST FRANCE8 citations62

US4518800AMay 21, 1985

Process for preparation of crystallized monohydrated sodium phenylpyruvate

HOECHST FRANCE5 citations62

Showing the top 50 of 93 patents by PatentIndex Score.

HOECHST FRANCE

Top patents by PatentIndex Score

Absorbent polymers, manufacturing process and their use in particular for sanitary articles

Refining process for paper pulp using a silica sol

Powdered superabsorbents, containing silica, their preparation process and their use

Finishing process for textiles, finishing bath for textiles using phosphinicosuccinic acid, phosphinicobissuccinic acid or their mixtures, finished textiles and use of said acids as finishes

Alkanepolycarboxylic acid derivatives as cross-linking agents of cellulose, new derivatives and textile finishes

Finishing process for textiles, finishing bath for textiles using phosphinicosuccinic acid, phosphinicobissuccinic acid or their mixtures, finished textiles and use of said acids as finishes

Amino-plastic resins intended for the improvement of cellulosed fibres and their application

Process for the elimination of hydrogen sulfide by using water-in-oil emulsions

Aqueous dispersion of styrene-acrylic polymers and its application to water resistant adhesive compositions especially suited for tiling

Strong cationic polyelectrolytes in powder form based on acrylamide and quaternized or salified dimethylaminoethyl acrylate for flocculation of solid material suspensions and coalescence of emulsions

Methyl-2-tertiary butyl-5-thiophenol, its preparation process and its use

Perhydro-[2,3-c]-oxazolo-1,4-oxazines and their process of preparation

Process for increasing the production or recovery yields of hemiacetal-esters of glyoxylic acid

Compositions for the treatment of paper and/or cardboard surfaces and their use in the paper industry

Preparation process for arylacetic acids and their alkali metal salts

Polymerizable luminescent fluid composition and its use

Process for coating papers and its use in flexographic printing

Transvinylation of carboxylic acids

Coating process for papers and cardboards and its use for obtaining paper which has a good smoothness

Preparation process for piperonal

Process for the manufacture of aqueous solutions of glyoxylic acid

Process for the manufacture of alkyl pyruvates

Aqueous dispersion of styrene-acrylic polymers and its application to water resistant adhesive compositions especially suited for tiling

Use of cyclic aminals of glyoxylic acid for trapping hydrogen sulphide

Substituted succinimides as corrosion inhibitors

Hydrophilic polymer based on acrylic acid and alkali metal acrylate, its method of preparation and its application as an absorbent, in particular of a physiological solution

Substituted ureas for ennobling cellulose fibres

Cationic aminoplastic resin, preparation process and application thereof to water treatment

Powdered cationic polyelectrolytes, based on acrylamide and quaternized or salified dimethyl-aminoethyl acrylate, process for producing them

Cationic copolymers which are insoluble in water, new dispensions and their use in the coating of papers

Water-in-oil emulsions and their use in the elimination of hydrogen sulphide

Glycerol derivatives, their preparation process, cross-linking compositions containing them, and their use in the textile industry

Hydrophilic polymer based on acrylic acid and alkali metal acrylate, its preparation process and its use as an absorbing agent

Aqueous dispersions of thermally cross-linkable polymers based on alkyl (meth)acrylate, the process for their preparation and their use in particular as binders and/or impregnation agents

Process for the preparation of glyoxal monoactals

New continuous industrial manufacturing process for an aqueous solution of glyoxylic acid

Cationic ampholytic tetrapolymers and cosmetic compositions containing them

Novel stable water in oil dispersions of hydrosoluble cationic polymers based on salified or quaternized dimethylaminoethyl acrylate, process of preparation thereof and application thereof as flocculents

Process for eliminating the diethanolamine present in triethanolamine and preparation process for purified triethanolamine

Continuous process for the industrial manufacture of dimethoxyethanal

Process for fleshing skins

Process for industrial manufacture of sodium parahydroxymandelate

Process for producing hydroxyalkylaminoacetic acids

Sodium salt of 1-menthyloxycarbonyl 1-hydroxy methanesulphonic acid, its preparation process and its use for obtaining L(-)menthyl glyoxylate

Process for coating papers and its use in flexographic printing

Process for obtaining refractory metal oxides based on silica by sol-gel route in aqueous medium

New substituted derivatives of N-ethyl(meth)acrylamide and a method for the preparation thereof

Pure anhydrous crystallized acrylamidoglycolic acid and a method for the preparation thereof

Process to manufacture glyoxylic acid by electrochemical reduction of oxalic acid

Process for preparation of crystallized monohydrated sodium phenylpyruvate