Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4659944 | High voltage detection circuit | James A. Miller, Richard W. Ulmer | 1987-04-21 |
| 4508983 | MOS Analog switch driven by complementary, minimally skewed clock signals | Joe W. Peterson, Roger A. Whatley | 1985-04-02 |
| 4472647 | Circuit for interfacing with both TTL and CMOS voltage levels | Stephen H. Kelley, Richard W. Ulmer | 1984-09-18 |
| 4469959 | Input buffer | Kevin Luke | 1984-09-04 |
| 4384277 | Digital to analog converter | Stephen H. Kelley | 1983-05-17 |
| 4370632 | Multiple function operational amplifier circuit | Stephen H. Kelley, Richard W. Ulmer, Henry Wurzburg | 1983-01-25 |
| 4303958 | Reverse battery protection | — | 1981-12-01 |
| 4260959 | FET Relaxation oscillator with reduced sensitivity to supply voltage and threshold variations | — | 1981-04-07 |