Helmut Grantz
22Patents
11h-index
30Co-inventors
75Inventor score
Filing activity: Apr 11, 1977 → May 1, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5646614A | System for monitoring the front or rear parking space of a motor vehicle | Performing Operations; Transporting | 263 | Expired |
| US6523955B1 | Method for improving optic perceptive faculty by modifying the retinal image | Physics | 80 | Expired |
| US5483807A | Device for air-conditioning the passenger compartment and for cooling the drive system of electric vehicles | Emerging Cross-Sectional Technologies | 68 | Expired |
| US6344828B1 | Antenna system for a satellite-supported vehicle navigation device | Electricity | 31 | Expired |
| US4550774A | Surface heating body for vehicles | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US4623166A | Head restraint in a motor car | Performing Operations; Transporting | 27 | Expired |
| US5609382A | Motor vehicle central console | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4503906A | Surface heater structure, especially for vehicles | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6252978A | Device for protecting a motor vehicle against use by third parties, with individual driving authorization | Performing Operations; Transporting | 18 | Expired |
| US4691949A | Lock arrangement for a motor vehicle door | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5566880A | Process and apparatus for heating the passenger compartment of a motor vehicle | Performing Operations; Transporting | 12 | Expired |
| US6714327B1 | Use of a holographic video screen as a display surface in a vehicle | Physics | 11 | Expired |
| US4189177A | Forward longitudinal bearer supported at the end wall of a self-supporting motor vehicle body | Performing Operations; Transporting | 10 | Expired |
| US5076350A | Heat tube designed plate heat exchanger | Performing Operations; Transporting | 8 | Expired |
| US4448242A | Heat-exchanger with a bundle of parallelly extending pipes adapted to be acted upon by air | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6213627A | Illuminating system | Physics | 8 | Expired |
| US4448241A | Heat-exchanger with a bundle of parallelly extending pipes adapted to be acted upon by air | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4520863A | Heat-exchanger with a bundle of parallelly extending pipes adapted to be acted upon by air | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4371125A | Safety belt system | Performing Operations; Transporting | 4 | Expired |
| US4213581A | Wind-up mechanism for the elimination of belt looseness in a safety belt system | Performing Operations; Transporting | 3 | Expired |
| US4121381A | Jointed window lifter, especially for motor vehicles | Fixed Constructions | 3 | Expired |
| US6690408B1 | Use of a holographic video screen as a display surface for information systems | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.