Rolf Schafer
31Patents
12h-index
34Co-inventors
81Inventor score
Filing activity: Jun 17, 1974 → Sep 30, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4329561A | Method of ensuring the maintenance of constant quality of spot welds | Performing Operations; Transporting | 85 | Expired |
| US5696481A | Process for recording intermediate and final times in sporting events | Physics | 75 | Expired |
| US4617186A | Sustained release drug delivery system utilizing bioadhesive polymers | Human Necessities | 55 | Expired |
| US4546123A | Polymer hydrogels adapted for use as soft contact lenses, and method of preparing same | Emerging Cross-Sectional Technologies | 49 | Expired |
| US4362737A | Transdermal carrier materials | Chemistry; Metallurgy | 34 | Expired |
| US4303482A | Apparatus and method for selective electrochemical etching | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4598017A | Composite magnetic disk with Si and SiC substrate | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4609493A | Solution and method for removing inorganic and organic deposits from contact lenses | Chemistry; Metallurgy | 18 | Expired |
| US7862119B2 | Vehicle seat with lordosis support | Performing Operations; Transporting | 17 | Active |
| US4456596A | Wound healing glycoside compositions | Human Necessities | 14 | Expired |
| US4818440A | Novel polyether carboxylic acid derivatives, as well as their uses | Chemistry; Metallurgy | 12 | Expired |
| US3984523A | Selective absorption of chloride from gases which contain chlorine and carbon dioxide | Chemistry; Metallurgy | 12 | Expired |
| US4808239A | Method of cleaning contact lens using compositions containing polyether carboxylic acid surfactant | Chemistry; Metallurgy | 11 | Expired |
| US8313411B2 | Backlash-free planetary gear unit with split planet gears, which are preloaded by spring bars arranged parallel to the planetary axis of rotation | Emerging Cross-Sectional Technologies | 9 | Active |
| US5318717A | Use of nonionic surfactant to enhance the cleaning effect of pancreatin on contact lenses | Chemistry; Metallurgy | 9 | Expired |
| US4599195A | Solution and method for removing protein, lipid, and calcium deposits from contact lenses | Chemistry; Metallurgy | 8 | Expired |
| US4705991A | Method of operating a high-pressure metal vapor discharge lamp and circuit arrangement for carrying out this method | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4521122A | Needle printer assembly | Performing Operations; Transporting | 6 | Expired |
| US4132759A | Method of purifying brine used in electrolysis by the amalgam process | Chemistry; Metallurgy | 5 | Expired |
| US5415837A | Use of diamines to disinfect and clean contact lenses | Human Necessities | 5 | Expired |
| US5627214A | Use of diamines in ophthalmic compositions | Human Necessities | 5 | Expired |
| US4908206A | Extracts of embryonic organs, process for their preparation and pharmaceutical preparation containing them | Human Necessities | 5 | Expired |
| US4151389A | Method of and apparatus for welding sheet steel panels | Performing Operations; Transporting | 5 | Expired |
| US5002751A | Highly-coercive isometric iron oxides, a process for the production and the use thereof | Chemistry; Metallurgy | 3 | Expired |
| US4046865A | Process for producing sodium chloride brines suitable for electrolysis | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.