Issued Patents All Time
Showing 51–75 of 88 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4893087 | Low voltage and low power frequency synthesizer | — | 1990-01-09 |
| 4891638 | Nationwide display pager with location readout | — | 1990-01-02 |
| 4868561 | Method of reprogramming an alert pattern | — | 1989-09-19 |
| 4862516 | System for automatically tuning the antenna of a miniature portable communications device | Philip P. Macnak, James S. Irwin | 1989-08-29 |
| 4860004 | Digital selective calling receiver having a selectively attachable device for multiple independent address decoding capability | — | 1989-08-22 |
| 4839628 | Paging receiver having selectively protected regions of memory | Mario A. Rivas, Kenneth R. Burch, Vincent B. Deems | 1989-06-13 |
| 4829466 | Paging device with modifiable operational characteristics | Kuppuswamy Raghunathan | 1989-05-09 |
| 4816820 | Radio communication receiver with apparatus for altering bit rate of the receiver | — | 1989-03-28 |
| 4811376 | Paging system using LPC speech encoding with an adaptive bit rate | Dakshesh D. Parikh | 1989-03-07 |
| 4793196 | Gear coupled, counter-rotating vibratory drive assembly | Joseph C. Thomas | 1988-12-27 |
| 4786902 | Control interface for combined watch and pager functions | Philip P. Macnak | 1988-11-22 |
| 4769642 | Paging receiver with LPC speech synthesizer | Wendell L. Little | 1988-09-06 |
| 4766366 | Trimmable current source | — | 1988-08-23 |
| 4749991 | Turn off protection circuit | Wendell L. Little, Barry W. Herold | 1988-06-07 |
| 4713599 | Programmable trimmable circuit having voltage limiting | — | 1987-12-15 |
| 4701943 | Paging system using LPC speech encoding with an adaptive bit rate | Dakshesh D. Parikh | 1987-10-20 |
| 4698790 | Programmable read only memory adaptive row driver circuit | — | 1987-10-06 |
| 4682165 | Apparatus for inhibiting repetitive message detections in a zone batched communication system | — | 1987-07-21 |
| 4672576 | Programmable read only memory output circuit | — | 1987-06-09 |
| 4660027 | Reduced power consumption low battery alert device | — | 1987-04-21 |
| 4648015 | Filter capacitor discharge circuit for a DC-DC converter | Stephen H. Woltz | 1987-03-03 |
| 4647793 | Driver circuit for generating output at two different levels | — | 1987-03-03 |
| 4634956 | DC to DC converter | Michael J. DeLuca, William Siegel | 1987-01-06 |
| 4631737 | Self biasing direct coupled data limiter | Yolanda Prieto, George W. Smoot | 1986-12-23 |
| 4628272 | Tuned inductorless active phase shift demodulator | Yolanda Prieto | 1986-12-09 |