Quantel Limited
Courtaboouf-Orsay Cedex, FR· latest recorded location
Quantel Limited is named on 9 US grants and 0 published applications in this corpus. Its most frequent classification is G02B (Optical elements, systems or apparatus).
- Granted patents
- 9
- Published applications
- 0
- Inventors
- 10
- Granted in 2026 so far
- 0
- Most recent grant
- 2 Apr 1991
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
By publication year.
Technology areas
Share of 9 documents
- G02BOptical elements, systems or apparatus5
- H01SDevices using the process of light amplification by stimulated emission of radiation3
- C03CChemical composition of glasses, glazes or vitreous enamels1
- G01CMeasuring distances, levels or bearings1
- G02FOptical devices or arrangements for the control of light by modification of1
Recent patents
- Active optical gyrometer employing a phase conjugation2 Apr 1991US 5,004,341 A
- Method for producing a fluidtight and heat curable seal between metal objects and a body of vitroceramic material30 Jan 1990US 4,896,816 A
- Optical filtering element and a spectral refining device including the same25 Dec 1984US 4,490,021 A
- Mirror having a variable focal length13 Dec 1983US 4,420,222 A
- Objective having a variable focal length4 Oct 1983US 4,407,567 A
No published applications.
Most cited
By later US patents
- Objective having a variable focal length85US 4,407,567 A1983
- Optical system having a variable focal length39US 4,289,379 A1981
- Thick optical element having a variable curvature35US 4,298,247 A1981
- Mirror having a variable focal length17US 4,420,222 A1983
- Process for eliminating small-scale intensity fluctuations of laser beams9US 3,999,144 A1976