Helmut Schaefer
21Patents
8h-index
18Co-inventors
72Inventor score
Filing activity: Apr 1, 1975 → Sep 22, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4524529A | Insole for shoes | Human Necessities | 110 | Expired |
| US4502234A | Synthetic-resin body support material | Emerging Cross-Sectional Technologies | 40 | Expired |
| US4140813A | Method of making long-term electrode for electrolytic processes | Chemistry; Metallurgy | 21 | Expired |
| US4016326A | Layer composition | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5810142A | Flow control valve for rotating component | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4575446A | Process for producing an insole for shoes | Human Necessities | 9 | Expired |
| US5224578A | Coolant flow control for a clutch | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US6769474B2 | Casting die for the production of a cylinder block/crankcase | Performing Operations; Transporting | 8 | Expired |
| US4581261A | Dressed split leather | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4751116A | Imitation dressed split leather | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4874449A | Process for dressing a substantially flat substrate such as split leather or a textile material | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5826462A | Plastic slider pad for gearbox shift fork | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4430448A | Elastic molded body comprising a cell structure and process for producing such a molded body | Chemistry; Metallurgy | 5 | Expired |
| US6203203A | Slide bearing having a bearing block and a bearing cap | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US7240608B2 | Cylinder liner for a cylinder crankcase | Emerging Cross-Sectional Technologies | 3 | Expired |
| US8151818B2 | System for supplying hydraulic fluid | Emerging Cross-Sectional Technologies | 2 | Active |
| US6739377B2 | Process for incorporating a metallic semi-finished product by casting | Performing Operations; Transporting | 1 | Expired |
| US9599127B2 | Hydraulic circuit supply system | Emerging Cross-Sectional Technologies | 1 | Active |
| US9752675B2 | Transmission control circuit | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US8978727B2 | Support for at least one brush element and labeling machine | Human Necessities | 0 | Active |
| US7543556B2 | Cylinder crankcase comprising a cylinder liner | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.