Societe Francaise Hoechst

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 1124
 
  
 
C08K USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS 1101
 
  
 
C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 1115
 
  
 
C11C FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM116
 
  
 
D21D TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE 18

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5225041 Refining process for paper pulp using a silica solJan 31, 92Jul 06, 93[D21D]
5223621 Transvinylation of carboxylic acidsJan 06, 92Jun 29, 93[C11C]
5147921 Powdered superabsorbents, containing silica, their preparation process and their useJun 25, 91Sep 15, 92[C08L, C08K]
5098951 Hydrophilic polymer based on acrylic acid and alkali metal acrylate, its preparation process and its use as an absorbing agent, in particular as an absorbing agent for articles of hygieneApr 29, 91Mar 24, 92[C08F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5382667 Substituted succinimides as corrosion inhibitorsExpiredJan 05, 94Jan 17, 95[C07D, C23F]
5360881 Method of cross-linking ethylene monomers using diallyloxyacetic acid and its basic addition salts as cross-linking agentsExpiredMay 24, 93Nov 01, 94[C08F]
5358535 Use of polyalkyleneglycol diesters as formaldehyde collectors and finishing process for the textile industryExpiredMay 07, 93Oct 25, 94[D06M]
5340441 Cationic copolymers which are insoluble in water, new dispersions and their use in the coatings of papersExpiredAug 31, 93Aug 23, 94[D21H]
5332829 Process for reducing 5-(2-thenylidene) hydantoin to 5-(2-thenyl) hydantoinExpiredFeb 08, 93Jul 26, 94[C07D]
5326378 Tris (2-acetoacetoxy ethyl)-amine, and its hydrosoluble salts, preparation process, use as formaldehyde collectors and finishing process for fabricsExpiredJun 24, 93Jul 05, 94[C07C, D06M]
5306833 Preparation process for arylacetic acids and their alkali metal saltsExpiredFeb 03, 93Apr 26, 94[C07D, C07C]
5292958 Process for eliminating the diethanolamine present in triethanolamine and preparation process for purified triethanolamineExpiredOct 29, 92Mar 08, 94[C07C]
5284635 Process for the elimination of hydrogen sulfide by using water-in-oil emulsionsExpiredJan 25, 93Feb 08, 94[C01B]
5266162 Process for coating papers and its use in flexographic printingExpiredFeb 11, 93Nov 30, 93[D21H]
5262238 Cationic copolymers which are insoluble in water, new dispensions and their use in the coating of papersExpiredDec 09, 92Nov 16, 93[C08L]
5258448 Absorbent polymers, manufacturing process and their use in particular for sanitary articlesExpiredOct 06, 92Nov 02, 93[C08F]
5256725 Polymerizable luminescent fluid composition and its useExpiredJun 04, 92Oct 26, 93[C08F]
5229168 Process for coating papers and its use in flexographic printingExpiredDec 13, 91Jul 20, 93[B05D, D21H]
5225103 Aqueous aldehyde solutions for trapping hydrogen sulfide in natural gas and crude oil producing plantsExpiredJul 07, 92Jul 06, 93[C23F]
5223175 Water-in-oil emulsions and their use in the elimination of hydrogen sulphideExpiredSep 05, 90Jun 29, 93[B01J, C10G]
5219619 Coating process for papers and cardboards and its use for obtaining paper which has a good smoothnessExpiredFeb 24, 92Jun 15, 93[B05D]
5215542 Process for fleshing skinsExpiredJul 30, 91Jun 01, 93[C14C]
5200541 Non-centrosymmetric organometallic molecules, process of preparation and application in nonlinear optics and intermediatesExpiredJan 10, 92Apr 06, 93[C07G, C07F]
5171884 Preparation process for glyoxylic acid by catalytic oxidation of glyoxal in an aqueous medium in the presence of catalytic quantities of platinumExpiredJan 22, 91Dec 15, 92[C07C]

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