Klaus Fischer
35Patents
9h-index
73Co-inventors
78Inventor score
Filing activity: Sep 4, 1974 → Aug 29, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD515759S1 | Wet wiper | General | 40 | Expired |
| US6421979B1 | Composite constructional element | Performing Operations; Transporting | 36 | Expired |
| US7198006B2 | Cat litter box | Human Necessities | 21 | Expired |
| US5806510A | Barbecue tray | Human Necessities | 19 | Expired |
| US9021654B2 | Liquid aspirator for drawing off and sucking up liquids | Human Necessities | 17 | Active |
| US5252540A | Sulfonamides | Chemistry; Metallurgy | 14 | Expired |
| US6675426B2 | Damp mop | Human Necessities | 12 | Expired |
| US4097963A | Shaped article comprising cellulose hydrate which is chemically modified by polyalkylene oxide containing synthetic polymers, and preparation thereof | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6695892B1 | Organic fertilizer having humic properties its method of production and its use | Chemistry; Metallurgy | 9 | Expired |
| US5720792A | Organic fertilizer and method of manufacturing it | Chemistry; Metallurgy | 8 | Expired |
| US3998688A | Method for the production of cellulose fibers using a two-step pre-treatment | Textiles; Paper | 8 | Expired |
| US5171353A | Sulfonamides | Chemistry; Metallurgy | 7 | Expired |
| US6538130B1 | Manufacture of viscose and of articles therefrom | Chemistry; Metallurgy | 6 | Expired |
| US5849567A | Method of decontaminating solid materials contaminated with heavy metals | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4536128A | Barrel housing for centrifugal fluid machines | Emerging Cross-Sectional Technologies | 3 | Expired |
| US8263535B2 | Method for producing polyalkenyl succinimide products, novel polyalkenylsuccinimide products with improved properties, intermediate products | Chemistry; Metallurgy | 3 | Active |
| US6023824A | Process for producing a high-strength, high-shrinkage polyamide 66 filament yarn | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7306842B2 | Use of melamine resin foils and or films for coating three-dimensionally structured surfaces and or moulded bodies | Emerging Cross-Sectional Technologies | 1 | Expired |
| US8993735B2 | Substrate for soil improvement having a water-storing property, method for producing same, and use thereof | Chemistry; Metallurgy | 1 | Active |
| US5227110A | Process for manufacturing highly oriented amorphous polyester filament yarns | Textiles; Paper | 1 | Expired |
| US5431999A | Polyester monofilaments | Emerging Cross-Sectional Technologies | 1 | Expired |
| US5158598A | Bithienyl derivatives, and herbicidal use for agents containing them | Chemistry; Metallurgy | 1 | Expired |
| US7820017B2 | Dielectric-layer-coated substrate and installation for production thereof | Electricity | 1 | Expired |
| US9615705B2 | Liquid aspirator for drawing off and sucking up liquids | Human Necessities | 1 | Active |
| US4937354A | Preparation of 3-(3,4,5,6-tetrahydro-phthalimido)-benzaldehydes | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.