Altec, Inc.
31Patents
5Active
31Granted
41Portfolio score
Filing activity: Jun 2, 1975 → Sep 13, 2013 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6238338A | Biosignal monitoring system and method | Emerging Cross-Sectional Technologies | 329 | Expired |
| US4296278A | Loudspeaker overload protection circuit | Electricity | 283 | Expired |
| US6440067B1 | System and method for remotely monitoring functional activities | Emerging Cross-Sectional Technologies | 231 | Expired |
| US6129666A | Biomedical electrode | Human Necessities | 57 | Expired |
| USD250586S | Loudspeaker | General | 48 | Expired |
| US3991286A | Heat dissipating device for loudspeaker voice coil | Electricity | 47 | Expired |
| US4122508A | Modular printed circuit board assembly having cooling means incorporated therein | Electricity | 38 | Expired |
| US6880951B2 | Flashlight using a light emitting diode as a lamp | Mechanical Engineering; Lighting; Heating | 38 | Expired |
| US6480731B1 | Biomedical electrode | Human Necessities | 29 | Expired |
| US4187926A | Loudspeaker horn | Physics | 27 | Expired |
| US4050541A | Acoustical transformer for horn-type loudspeaker | Physics | 27 | Expired |
| USD248647S | Loudspeaker | General | 25 | Expired |
| US4325456A | Acoustical transformer for compression-type loudspeaker with an annular diaphragm | Electricity | 24 | Expired |
| USD249941S | Loudspeaker | General | 14 | Expired |
| US8971983B2 | Disposable low-profile conformable biomedical sensor | Human Necessities | 13 | Active |
| US5979553A | Method and apparatus for completing and backside pressure testing of wells | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4176731A | Two-section exponential acoustical horn | Physics | 11 | Expired |
| US4481663A | Network for use with piezoceramic transducer | Electricity | 10 | Expired |
| USD249509S | Acoustical transformer for coupling sound waves from the diaphragm to the throat of a horn-type loudspeaker | General | 9 | Expired |
| US4078215A | Electronic filter circuit | Electricity | 7 | Expired |
| US4081757A | Parallel power amplifier circuits | Electricity | 7 | Expired |
| US3987342A | Protective circuit utilizing multilevel power supply output | Electricity | 6 | Expired |
| US4180710A | Adjustably positioned phasing plug | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4130023A | Method and apparatus for testing and evaluating loudspeaker performance | Physics | 6 | Expired |
| US3967367A | Method for aligning loudspeaker diaphragm and voice coil assembly | Emerging Cross-Sectional Technologies | 4 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.