Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4974942 | Active flat-design video screen | Daniel Gross, Gert Hewig, Ralf Dornhaus | 1990-12-04 |
| 4682889 | Refractometer for measuring the refractive index of a liquid | — | 1987-07-28 |
| 4641965 | Immersion refractometer with angle prism | — | 1987-02-10 |
| 4618764 | Fiber-optical pressure detector | — | 1986-10-21 |
| 4572950 | Fiber-optical pressure detector | — | 1986-02-25 |
| 4495297 | Method for making a gradient doped polysiloxane gel | Ramon Puyane, Carlos Gonzalez-Oliver | 1985-01-22 |
| 4477724 | Photoelectric control device | — | 1984-10-16 |
| 4433913 | Refractive index of a liquid referred to a predetermined temperature | — | 1984-02-28 |
| 4427293 | Double optical probe device for the determination of the refractive index of a liquid reduced to a predetermined reference temperature | — | 1984-01-24 |
| 4315147 | Photoelectric switch with visible signal | — | 1982-02-09 |
| 4240747 | Refractive-index responsive light-signal system | — | 1980-12-23 |
| 4187025 | Device for producing a light signal corresponding to the refractive index of a fluid | — | 1980-02-05 |