BOOKHAM TECHNOLOGY, PLC
141Patents
11Active
141Granted
44Portfolio score
Filing activity: Feb 6, 1998 → Feb 7, 2008 · 11 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6298177A | Phase modulator for semiconductor waveguide | Physics | 106 | Expired |
| US6101210A | External cavity laser | Electricity | 86 | Expired |
| US6163632A | Integrated optical circuit | Physics | 63 | Expired |
| US6108472A | Device for re-directing light from optical waveguide | Electricity | 58 | Expired |
| US6304690A | Connecting a plurality of circuit boards | Electricity | 48 | Expired |
| US7259901B2 | Optical signal demodulators | Electricity | 35 | Expired |
| US6650458B1 | Electro-optic modulator with continuously adjustable chirp | Physics | 34 | Expired |
| US6278822A | Branched optical waveguide and its method of use | Physics | 33 | Expired |
| US7116460B2 | Modulation control | Electricity | 32 | Expired |
| US6278168A | Thermo-optic semiconductor device | Physics | 31 | Expired |
| US6298178A | Stray light absorption | Physics | 31 | Expired |
| US6088496A | Optical device for splitting up a multi-wavelength light beam | Physics | 29 | Expired |
| US6584239B1 | Electro optic modulator | Physics | 26 | Expired |
| US6891676B2 | Tunable spectral filter | Physics | 26 | Expired |
| US6233070A | Optical system and method for changing the lengths of optical paths and the phases of light beams | Physics | 25 | Expired |
| US6212320A | Coupling optical fibre to waveguide | Physics | 23 | Expired |
| US6819702B2 | Pump laser diode with improved wavelength stability | Electricity | 23 | Expired |
| US7145923B2 | Tuneable laser | Electricity | 22 | Expired |
| US6212323A | Temperature stable integrated optical device | Physics | 21 | Expired |
| US6977986B1 | Method and apparatus for aligning a crystalline substrate | Physics | 18 | Expired |
| US7184207B1 | Semiconductor optical device | Physics | 18 | Expired |
| US6509139B1 | Method of fabricating an integrated optical component | Physics | 17 | Expired |
| US7423364B2 | Sealed mover assembly | Electricity | 17 | Expired |
| US6266468A | Waveguide end face | Physics | 17 | Expired |
| US6220766A | Hermetically sealed package and method of assembly | Physics | 16 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.