Assignee
HOECHST FRANCE
FR·93 granted patents·852 citations·filing 1977–1996
Top patents by PatentIndex Score
93 records- 0186US5225041ARefining process for paper pulp using a silica solHOECHST FRANCE·Filed 1992·Granted Jul 6, 1993·39 cites·3 claims
- 0285US5147921APowdered superabsorbents, containing silica, their preparation process and their useHOECHST FRANCE·Filed 1991·Granted Sep 15, 1992·29 cites·7 claims
- 0384US5273549AAlkanepolycarboxylic acid derivatives as cross-linking agents of cellulose, new derivatives and textile finishesHOECHST FRANCE·Filed 1991·Granted Dec 28, 1993·53 cites·19 claims
- 0481US4948827AMethyl-2-tertiary butyl-5-thiophenol, its preparation process and its useHOECHST FRANCE·Filed 1989·Granted Aug 14, 1990·15 cites·4 claims
- 0577US5385680AFinishing process for textiles, finishing bath for textiles using phosphinicosuccinic acid, phosphinicobissuccinic acid or their mixtures, finished textiles and use of said acids as finishesHOECHST FRANCE·Filed 1994·Granted Jan 31, 1995·34 cites·5 claims
- 0676US5223621ATransvinylation of carboxylic acidsHOECHST FRANCE·Filed 1992·Granted Jun 29, 1993·15 cites·3 claims
- 0776US4396752AStrong cationic polyelectrolytes in powder form based on acrylamide and quaternized or salified dimethylaminoethyl acrylate for flocculation of solid material suspensions and coalescence of emulsionsHOECHST FRANCE·Filed 1980·Granted Aug 2, 1983·24 cites·4 claims
- 0874US5300240AFinishing process for textiles, finishing bath for textiles using phosphinicosuccinic acid, phosphinicobissuccinic acid or their mixtures, finished textiles and use of said acids as finishesHOECHST FRANCE·Filed 1993·Granted Apr 5, 1994·25 cites·4 claims
- 0974US4854934ASubstituted ureas for ennobling cellulose fibresHOECHST FRANCE·Filed 1988·Granted Aug 8, 1989·11 cites·12 claims
- 1073US5292958AProcess for eliminating the diethanolamine present in triethanolamine and preparation process for purified triethanolamineHOECHST FRANCE·Filed 1992·Granted Mar 8, 1994·16 cites·5 claims
- 1173US4156093AProcess for increasing the production or recovery yields of hemiacetal-esters of glyoxylic acidHOECHST FRANCE·Filed 1978·Granted May 22, 1979·8 cites·3 claims
- 1272US5091566AProcess for the manufacture of aqueous solutions of glyoxylic acidHOECHST FRANCE·Filed 1989·Granted Feb 25, 1992·10 cites·14 claims
- 1372US4968774AAmino-plastic resins intended for the improvement of cellulosed fibres and their applicationHOECHST FRANCE·Filed 1990·Granted Nov 6, 1990·28 cites·14 claims
- 1472US4595751APerhydro-[2,3-c]-oxazolo-1,4-oxazines and their process of preparationHOECHST FRANCE·Filed 1985·Granted Jun 17, 1986·9 cites·7 claims
- 1571US4835320AProcess for the preparation of glyoxal monoactalsHOECHST FRANCE·Filed 1987·Granted May 30, 1989·12 cites·8 claims
- 1670US4556718A4,5-Dialkoxy-1,3-dioxolane-2-carboxylic acids, their derivatives, preparation process and applicationHOECHST FRANCE·Filed 1984·Granted Dec 3, 1985·12 cites·8 claims
- 1769US5095128APreparation process for piperonalHOECHST FRANCE·Filed 1990·Granted Mar 10, 1992·11 cites·10 claims
- 1868US5306833APreparation process for arylacetic acids and their alkali metal saltsHOECHST FRANCE·Filed 1993·Granted Apr 26, 1994·10 cites·20 claims
- 1968US5284635AProcess for the elimination of hydrogen sulfide by using water-in-oil emulsionsHOECHST FRANCE·Filed 1993·Granted Feb 8, 1994·44 cites·15 claims
- 2064US5426239AContinuous process for the industrial manufacture of dimethoxyethanalHOECHST FRANCE·Filed 1994·Granted Jun 20, 1995·12 cites·6 claims
- 2164US5053527AProcess for the manufacture of alkyl pyruvatesHOECHST FRANCE·Filed 1990·Granted Oct 1, 1991·8 cites·6 claims
- 2262US5157090AGlycerol derivatives, their preparation process, cross-linking compositions containing them, and their use in the textile industryHOECHST FRANCE·Filed 1991·Granted Oct 20, 1992·8 cites·9 claims
- 2362US4196299AProcess for manufacturing thienyl-2 acetic acidHOECHST FRANCE·Filed 1978·Granted Apr 1, 1980·4 cites·11 claims
- 2461US5256725APolymerizable luminescent fluid composition and its useHOECHST FRANCE·Filed 1992·Granted Oct 26, 1993·16 cites·14 claims
- 2560US5395440ACompositions for the treatment of paper and/or cardboard surfaces and their use in the paper industryHOECHST FRANCE·Filed 1993·Granted Mar 7, 1995·11 cites·6 claims
- 2660US4650877AProcess for producing 4,5-dihydroxy-2-imidazolidinonesHOECHST FRANCE·Filed 1984·Granted Mar 17, 1987·4 cites·5 claims
- 2759US4518800AProcess for preparation of crystallized monohydrated sodium phenylpyruvateHOECHST FRANCE·Filed 1984·Granted May 21, 1985·5 cites·2 claims
- 2859US4319013APowdered cationic polyelectrolytes, based on acrylamide and quaternized or salified dimethyl-aminoethyl acrylate, process for producing themHOECHST FRANCE·Filed 1978·Granted Mar 9, 1982·16 cites·9 claims
- 2958US5219619ACoating process for papers and cardboards and its use for obtaining paper which has a good smoothnessHOECHST FRANCE·Filed 1992·Granted Jun 15, 1993·18 cites·18 claims
- 3058US4227016AProcess for manufacturing α-chloroarylacetic acidsHOECHST FRANCE·Filed 1977·Granted Oct 7, 1980·5 cites·19 claims
- 3157US5138096ANew continuous industrial manufacturing process for an aqueous solution of glyoxylic acidHOECHST FRANCE·Filed 1990·Granted Aug 11, 1992·7 cites·12 claims
- 3257US4918139AAqueous 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 agentsHOECHST FRANCE·Filed 1989·Granted Apr 17, 1990·13 cites·9 claims
- 3357US4602106AProcess for producing hydroxyalkylaminoacetic acidsHOECHST FRANCE·Filed 1985·Granted Jul 22, 1986·5 cites·8 claims
- 3456US4191841AProcess for manufacturing 4-hydroxy-3,5-dimethoxy benzoic acid from 3,4,5-trimethoxybenzoic acidHOECHST FRANCE·Filed 1979·Granted Mar 4, 1980·4 cites·5 claims
- 3555US5223175AWater-in-oil emulsions and their use in the elimination of hydrogen sulphideHOECHST FRANCE·Filed 1990·Granted Jun 29, 1993·18 cites·5 claims
- 3655US4978784AProcess for industrial manufacture of sodium parahydroxymandelateHOECHST FRANCE·Filed 1989·Granted Dec 18, 1990·4 cites·8 claims
- 3755US4968373AAqueous dispersion of styrene-acrylic polymers and its application to water resistant adhesive compositions especially suited for tilingHOECHST FRANCE·Filed 1990·Granted Nov 6, 1990·16 cites·8 claims
- 3854US5536481AUse of cyclic aminals of glyoxylic acid for trapping hydrogen sulphideHOECHST FRANCE·Filed 1994·Granted Jul 16, 1996·11 cites·9 claims
- 3954US5382667ASubstituted succinimides as corrosion inhibitorsHOECHST FRANCE·Filed 1994·Granted Jan 17, 1995·10 cites·12 claims
- 4054US4339602AProcess of preparation of racemic hydroxyarylglycolic acids and novel products resulting therefromHOECHST FRANCE·Filed 1980·Granted Jul 13, 1982·4 cites·1 claims
- 4153US4923921AAqueous dispersion of styrene-acrylic polymers and its application to water resistant adhesive compositions especially suited for tilingHOECHST FRANCE·Filed 1989·Granted May 8, 1990·11 cites·4 claims
- 4252US5130110AProcess for obtaining refractory metal oxides based on silica by sol-gel route in aqueous mediumHOECHST FRANCE·Filed 1990·Granted Jul 14, 1992·17 cites·4 claims
- 4351US5326378ATris (2-acetoacetoxy ethyl)-amine, and its hydrosoluble salts, preparation process, use as formaldehyde collectors and finishing process for fabricsHOECHST FRANCE·Filed 1993·Granted Jul 5, 1994·4 cites·5 claims
- 4451US4590249ACationic ampholytic tetrapolymers and cosmetic compositions containing themHOECHST FRANCE·Filed 1984·Granted May 20, 1986·15 cites·4 claims
- 4551US4581402ANovel stable water in oil dispersions of hydrosoluble cationic polymers based on salified or quaternized dimethylaminoethyl acrylate, process of preparation thereof and application thereof as flocculentsHOECHST FRANCE·Filed 1982·Granted Apr 8, 1986·17 cites·12 claims
- 4650US5616733APreparation method for 2-coumaranoneHOECHST FRANCE·Filed 1995·Granted Apr 1, 1997·5 cites·21 claims
- 4750US4851577ANew substituted derivatives of N-ethyl(meth)acrylamide and a method for the preparation thereofHOECHST FRANCE·Filed 1987·Granted Jul 25, 1989·11 cites·6 claims
- 4849US5262238ACationic copolymers which are insoluble in water, new dispensions and their use in the coating of papersHOECHST FRANCE·Filed 1992·Granted Nov 16, 1993·11 cites·8 claims
- 4949US4481116ACationic aminoplastic resin, preparation process and application thereof to water treatmentHOECHST FRANCE·Filed 1982·Granted Nov 6, 1984·14 cites·20 claims
- 5048US5200541ANon-centrosymmetric organometallic molecules, process of preparation and application in nonlinear optics and intermediatesHOECHST FRANCE·Filed 1992·Granted Apr 6, 1993·7 cites·15 claims
Showing the top 50 of 93 patent records by PatentIndex Score.
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