Franz Sperner
10Patents
8h-index
9Co-inventors
61Inventor score
Filing activity: Jul 16, 1976 → Oct 2, 1991
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4440178A | Implantable electrode | Human Necessities | 43 | Expired |
| US5340638A | Bulk material for packaging, packaging unit using same, process and apparatus for producing them | Emerging Cross-Sectional Technologies | 34 | Expired |
| US4514589A | Electrode connecting cable for cardiac pacemaker | Human Necessities | 29 | Expired |
| US4359977A | Heater plug for diesel engines | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4358663A | Heater plug for diesel engines | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4069370A | Electrical contact material, and terminal | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4326889A | Dental composition from gold particles, terpineol and ethyl cellulose | Chemistry; Metallurgy | 9 | Expired |
| US4159891A | Crucible | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4358271A | Method of preparing ceramic-coated dental prosthetic constructions | Human Necessities | 6 | Expired |
| US4149883A | Electrical contact | Electricity | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.