Ando Electric Co., Ltd.
432Patents
0Active
432Granted
41Portfolio score
Filing activity: May 27, 1980 → Jun 8, 2004
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5394235A | Apparatus for measuring distortion position of optical fiber | Physics | 123 | Expired |
| US4964074A | In-circuit emulator | Physics | 87 | Expired |
| US5268949A | Circuit for generating M-sequence pseudo-random pattern | Electricity | 82 | Expired |
| US5894226A | IC testing apparatus | Physics | 74 | Expired |
| US6795196B2 | Wavelength measurement apparatus | Physics | 61 | Expired |
| US6012291A | Temperature control device of an optical semiconductor device | Physics | 57 | Expired |
| US5633750A | Optical fiber amplifier | Electricity | 56 | Expired |
| US5936417A | Test head for IC tester | Physics | 56 | Expired |
| US5862162A | External resonator type wavelength- tunable light source | Electricity | 52 | Expired |
| US6160614A | Method, apparatus and computer program product for classification of measured data from multi-core optical fiber | Physics | 49 | Expired |
| US6259675A | Communication monitoring apparatus | Electricity | 48 | Expired |
| US5970076A | Wavelength tunable semiconductor laser light source | Electricity | 46 | Expired |
| US6018535A | External cavity type wavelength-tunable light source | Electricity | 41 | Expired |
| US5309438A | ATM cell delay circuit for | Electricity | 39 | Expired |
| US5561671A | Self-diagnostic device for semiconductor memories | Physics | 37 | Expired |
| US5719514A | Delay circuit compensating for variations in delay time | Electricity | 34 | Expired |
| US6373267B1 | Ball grid array-integrated circuit testing device | Electricity | 33 | Expired |
| US6026100A | External cavity-type of wavelength tunable semiconductor laser light source and method for tuning wavelength therefor | Electricity | 33 | Expired |
| US6122420A | Optical loopback apparatus | Physics | 33 | Expired |
| US5491714A | Wavelength-variable semiconductor laser light source | Electricity | 32 | Expired |
| US5924874A | IC socket | Electricity | 31 | Expired |
| US6028661A | Multi-branched optical line testing apparatus | Physics | 30 | Expired |
| US5686986A | Optical fiber characteristic measuring device | Physics | 30 | Expired |
| US5732089A | Bit error measurement circuit | Electricity | 29 | Expired |
| US5509192A | Apparatus for press-fitting connectors into printed boards | Emerging Cross-Sectional Technologies | 26 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.