OPTOPLAN AS
55Patents
26Active
55Granted
46Portfolio score
Filing activity: Mar 20, 1996 → Apr 28, 2015 · 16 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5844927A | Optical fiber distributed feedback laser | Electricity | 99 | Expired |
| US6097487A | Device for measurement of optical wavelengths | Physics | 44 | Expired |
| US6276215A | Sensor for measuring strain | Physics | 37 | Expired |
| US6680472B1 | Device for measuring of optical wavelengths | Physics | 31 | Expired |
| US6915686B2 | Downhole sub for instrumentation | Fixed Constructions | 31 | Expired |
| US7366055B2 | Ocean bottom seismic sensing system | Physics | 24 | Expired |
| US7660206B2 | Ocean bottom seismic station | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6343173B2 | Gold coated signal cable | Physics | 17 | Expired |
| US7245382B2 | Downhole optical sensor system with reference | Physics | 16 | Expired |
| US6384404B1 | Device for measuring a bending load | Physics | 15 | Expired |
| US7551517B2 | Seabed seismic station packaging | Physics | 13 | Active |
| US8942059B2 | Container system for seismic cable and stations | Mechanical Engineering; Lighting; Heating | 13 | Active |
| US7268884B2 | Wavelength reference system for optical measurements | Physics | 12 | Expired |
| US7510349B2 | Ocean bottom seismic station installation | Performing Operations; Transporting | 12 | Active |
| US8064286B2 | Seismic streamer array | Physics | 11 | Active |
| US6788418B1 | Method and apparatus for interrogation of birefringent FBG sensors | Physics | 11 | Expired |
| US7081959B2 | Method and apparatus for providing polarization insensitive signal processing for interferometric sensors | Physics | 11 | Expired |
| US7433045B2 | Active coherence reduction for interferometer interrogation | Physics | 11 | Expired |
| US7060967B2 | Optical wavelength interrogator | Physics | 11 | Expired |
| US7088878B2 | Method and apparatus for producing depolarized light | Physics | 11 | Expired |
| US6888125B2 | Fiber optic sensing systems and method of use thereof | Electricity | 11 | Expired |
| US6856401B1 | Elimination of polarization fading in unbalanced optical measuring interferometers | Physics | 9 | Expired |
| US7157693B2 | Optical wavelength interrogator | Physics | 9 | Expired |
| US7171093B2 | Method for preparing an optical fibre, optical fibre and use of such | Physics | 8 | Expired |
| US7688673B2 | Connector nodes for interrogating optical fiber sensor arrays | Physics | 8 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.