Gilbert Gras
7Patents
6h-index
4Co-inventors
48Inventor score
Filing activity: Jul 7, 1977 → Mar 27, 1984
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4616933A | Process and apparatus for making a numerical determination of the color, or of a change in color, of an object | Physics | 93 | Expired |
| US4159640A | Apparatus for measuring the consistency or hardness of a material | Physics | 58 | Expired |
| US4297884A | Method of and apparatus for the measurement of at least one mechanical property of an elastic material | Physics | 36 | Expired |
| US4177798A | Apparatus for measuring the mechanical characteristics of a material such as living skin | Physics | 20 | Expired |
| US4483619A | Apparatus to register the quantity of sebum secreted by a skin | Physics | 11 | Expired |
| US4480921A | Apparatus to register the quantity of sebum secreted by a skin | Physics | 10 | Expired |
| US4392498A | Apparatus intended for classifying the quantity of a fatty product found on the skin surface | Emerging Cross-Sectional Technologies | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.