Instruments SA, Inc.
47Patents
0Active
47Granted
37Portfolio score
Filing activity: Jan 9, 1976 → Mar 24, 1999
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5371586A | Low aberration diffraction grating system | Physics | 80 | Expired |
| US5838848A | N.times.N wavelength router, optical routing method and associated communication network | Electricity | 53 | Expired |
| US5080465A | Diffraction grating and method of making | Emerging Cross-Sectional Technologies | 50 | Expired |
| US4622662A | Wavelength-selective multiplexer-demultiplexer | Physics | 47 | Expired |
| US4819224A | Wavelength multiplexer-demultiplexer corrected of geometric and chromatic aberrations | Physics | 39 | Expired |
| US4583820A | Wavelength multiplexer/demultiplexer using optical fibers | Physics | 37 | Expired |
| US4836634A | Wavelength multiplexer/demultiplexer using optical fibers | Physics | 30 | Expired |
| US4271100A | Apparatus for producing an aerosol jet | Performing Operations; Transporting | 28 | Expired |
| US4484793A | Switching device between optical fibers | Physics | 26 | Expired |
| US4675860A | Compact wavelength multiplexer-demultiplexer with variable filtration | Physics | 24 | Expired |
| US5640957A | Ultraviolet radiation protection evaluator | Physics | 23 | Expired |
| US5581356A | High purity tunable forensic light source | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US5898500A | Device and method for three-dimensional measurements and observation in situ of a surface layer deposited on a thin-film stack | Electricity | 22 | Expired |
| US5995221A | Modified concentric spectrograph | Physics | 21 | Expired |
| US4571074A | Spectrometry device for analyzing polychromatic light | Physics | 21 | Expired |
| US4337415A | High frequency inductive generator for the inductive coil of a plasma generator | Electricity | 17 | Expired |
| US4068954A | Monochromator having a concave holographic grating | Physics | 16 | Expired |
| US6160933A | Optical fiber wavelength multiplexer-demultiplexer | Physics | 16 | Expired |
| US6014482A | Selective optical device and wavelength multiplexer-demultiplexer | Physics | 15 | Expired |
| US5767965A | Apparatus and method for driving diffraction gratings | Physics | 15 | Expired |
| US5666200A | Method of ellipsometric measurement, an ellipsometer and device for controlling the carrying out of layers using such method and apparatus | Electricity | 14 | Expired |
| US4087183A | Spectrograph | Physics | 13 | Expired |
| US5589717A | Compact spectrum analyzer module | Physics | 12 | Expired |
| USRE37136E | Tunable high intensity forensic light | General | 11 | Expired |
| US4470910A | Chromatographic apparatus and process for its use | Physics | 11 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.