Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6662232 | Dynamic E-mail re-transmitting system having time parameters | Timothy J. Nicholls, Robert W. Allport, Christopher J. Capelli | 2003-12-09 |
| 6363414 | Method for converting an email message to a different format and retransmitting to a location other than recipient address information in the email message | Timothy J. Nicholls, Robert W. Allport, Christopher J. Capelli | 2002-03-26 |
| 6204834 | System and method for achieving uniform screen brightness within a matrix display | Robert C. Baker, William J. Donoghue, Claude Hilbert | 2001-03-20 |
| 4689788 | Method and apparatus for implementing a cost efficient voice/data communication system with a conventional PBX switch | Henry Wurzburg, Noel M. McCroskey | 1987-08-25 |
| 4618852 | Monotonic A/D converter which minimizes circuitry for high order bit conversion | Mathew A. Rybicki | 1986-10-21 |
| 4604584 | Switched capacitor precision difference amplifier | — | 1986-08-05 |
| 4594707 | High speed limited distance multiplexed data communications modem using a single twisted pair of conductors | John W. Merritt, Henry Wurzburg | 1986-06-10 |
| 4593389 | Simultaneous voice and asynchronous data telephone | Henry Wurzburg | 1986-06-03 |
| 4484028 | Digital loop transceiver having a power up/down circuit | Henry Wurzburg | 1984-11-20 |
| 4472647 | Circuit for interfacing with both TTL and CMOS voltage levels | Robert N. Allgood, Richard W. Ulmer | 1984-09-18 |
| 4432089 | Digital loop transceiver for interfacing a digital PABX to a digital subscriber set via a subscriber line | Henry Wurzburg | 1984-02-14 |
| 4387345 | Precision gain AC coupled operational amplifier | — | 1983-06-07 |
| 4384277 | Digital to analog converter | Robert N. Allgood | 1983-05-17 |
| 4384276 | Capacitive DAC to filter interface circuit | Richard W. Ulmer | 1983-05-17 |
| 4370632 | Multiple function operational amplifier circuit | Robert N. Allgood, Richard W. Ulmer, Henry Wurzburg | 1983-01-25 |
| 4355285 | Auto-zeroing operational amplifier circuit | Richard W. Ulmer, Roger A. Whatley | 1982-10-19 |
| 4320519 | (Sin X)/X correction circuit for a sampled data system | Henry Wurzburg | 1982-03-16 |
| 4311988 | Programmable A-law and .mu.-law DAC | Richard W. Ulmer | 1982-01-19 |
| 4300023 | Hybrid circuit | William J. Lillis | 1981-11-10 |