Dietmar Schaefer
31Patents
12h-index
28Co-inventors
81Inventor score
Filing activity: Feb 10, 1988 → Sep 15, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4891166A | Diquaternary polysiloxanes, their synthesis and use in cosmetic preparations | Chemistry; Metallurgy | 73 | Expired |
| US5401871A | Organopolysiloxane polyethers and their use as hydrolysis-resistant wetting agents in aqueous systems | Emerging Cross-Sectional Technologies | 65 | Expired |
| US4833225A | Polyquaternary polysiloxane polymers, their synthesis and use in cosmetic preparations | Chemistry; Metallurgy | 50 | Expired |
| US4931362A | Microcapsule and micromatrix bodies and method for their formation | Emerging Cross-Sectional Technologies | 47 | Expired |
| US5133898A | Manufacturing polyacrylate esters with long-chain hydrocarbon and polyoxyalkylene groups | Emerging Cross-Sectional Technologies | 46 | Expired |
| US5338485A | Polyacrylate esters with long-chain hydrocarbon and polyoxyalkylene groups and their use as surface active substances | Emerging Cross-Sectional Technologies | 31 | Expired |
| US6288129A | Process for preparing acrylic esters and/or methacrylic esters of hydroxy-functional siloxanes and/or polyoxyalkylene-modified siloxanes and their use | Chemistry; Metallurgy | 22 | Expired |
| US4921895A | Preparation for finishing textile fibers and products and textile products having improved handle | Textiles; Paper | 18 | Expired |
| US5004559A | Polyoxyalkylene-polysiloxane block copolymers as demulsifiers for water-containing oil | Chemistry; Metallurgy | 16 | Expired |
| US6268521A | Process for preparing acrylic esters and/or methacrylic esters of polyoxyalkylenes and the use thereof | Chemistry; Metallurgy | 15 | Expired |
| US5246607A | Methylpolysiloxanes with quaternary ammonium groups as corrosion inhibitors for preparations consisting predominantly of water | Chemistry; Metallurgy | 15 | Expired |
| US4844826A | Use of organosilicon compounds to thicken oils | Chemistry; Metallurgy | 12 | Expired |
| US5387467A | Method for modifying the surface of finely divided particles by the application of organofunctional polysiloxanes | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5744523A | Use of polyacrylate esters as dispersants | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5665155A | Organofunctional polysiloxanes for modifying the surface of finely divided particles | Chemistry; Metallurgy | 11 | Expired |
| US5391679A | Method for the synthesis of polyether siloxanes | Chemistry; Metallurgy | 10 | Expired |
| US5057579A | Polyacrylate esters with quaternary ammonium groups | Chemistry; Metallurgy | 10 | Expired |
| US5115040A | Polyacrylate esters with quaternary ammonium groups | Chemistry; Metallurgy | 9 | Expired |
| US5281478A | Method for modifying the surface of finely divided particles by the application of organofunctional polysiloxanes | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5115039A | Polyacrylate esters with quaternary ammonium groups | Chemistry; Metallurgy | 5 | Expired |
| US11286366B2 | Process for recycling silicones | Emerging Cross-Sectional Technologies | 5 | Active |
| US5296573A | Polyacrylate ester with long-chain alkoxylated hydrocarbonoxy groups and their use in cosmetics and personal grooming | Chemistry; Metallurgy | 5 | Expired |
| US5057580A | Polyacrylate esters with quaternary ammonium groups | Chemistry; Metallurgy | 5 | Expired |
| US5208311A | Organopolysiloxanes with polyether and ester groups linked to a common spacer group | Chemistry; Metallurgy | 5 | Expired |
| US5344949A | Method for the synthesis of surface-active anion-cation complexes | Chemistry; Metallurgy | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.