Societe Francaise Hoechst
88Patents
0Active
88Granted
37Portfolio score
Filing activity: May 12, 1978 → Sep 18, 1996
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5225041A | Refining process for paper pulp using a silica sol | Textiles; Paper | 36 | Expired |
| US5273549A | Alkanepolycarboxylic acid derivatives as cross-linking agents of cellulose, new derivatives and textile finishes | Chemistry; Metallurgy | 29 | Expired |
| US5385680A | 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 | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4396752A | 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 | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5130110A | Process for obtaining refractory metal oxides based on silica by sol-gel route in aqueous medium | Chemistry; Metallurgy | 17 | Expired |
| US5284635A | Process for the elimination of hydrogen sulfide by using water-in-oil emulsions | Chemistry; Metallurgy | 15 | Expired |
| US5219619A | Coating process for papers and cardboards and its use for obtaining paper which has a good smoothness | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5300240A | 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 | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5258448A | Absorbent polymers, manufacturing process and their use in particular for sanitary articles | Human Necessities | 12 | Expired |
| US4581402A | 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 | Textiles; Paper | 12 | Expired |
| US5147921A | Powdered superabsorbents, containing silica, their preparation process and their use | Chemistry; Metallurgy | 12 | Expired |
| US5256725A | Polymerizable luminescent fluid composition and its use | Chemistry; Metallurgy | 12 | Expired |
| US5536481A | Use of cyclic aminals of glyoxylic acid for trapping hydrogen sulphide | Chemistry; Metallurgy | 11 | Expired |
| US4319013A | Powdered cationic polyelectrolytes, based on acrylamide and quaternized or salified dimethyl-aminoethyl acrylate, process for producing them | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5262238A | Cationic copolymers which are insoluble in water, new dispensions and their use in the coating of papers | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4968774A | Amino-plastic resins intended for the improvement of cellulosed fibres and their application | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4481116A | Cationic aminoplastic resin, preparation process and application thereof to water treatment | Chemistry; Metallurgy | 10 | Expired |
| US4851577A | New substituted derivatives of N-ethyl(meth)acrylamide and a method for the preparation thereof | Chemistry; Metallurgy | 10 | Expired |
| US4835320A | Process for the preparation of glyoxal monoactals | Chemistry; Metallurgy | 10 | Expired |
| US4948827A | Methyl-2-tertiary butyl-5-thiophenol, its preparation process and its use | Chemistry; Metallurgy | 9 | Expired |
| US4968373A | Aqueous dispersion of styrene-acrylic polymers and its application to water resistant adhesive compositions especially suited for tiling | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5306833A | Preparation process for arylacetic acids and their alkali metal salts | Chemistry; Metallurgy | 9 | Expired |
| US4854934A | Substituted ureas for ennobling cellulose fibres | Textiles; Paper | 8 | Expired |
| US4923921A | Aqueous dispersion of styrene-acrylic polymers and its application to water resistant adhesive compositions especially suited for tiling | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5223175A | Water-in-oil emulsions and their use in the elimination of hydrogen sulphide | Emerging Cross-Sectional Technologies | 8 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.