Ulmer; Richard W.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ulmer; Richard W..The latest application filed is for "line interface for telephone".
- Ulmer; Richard W. - Gilbert AZ
- Ulmer; Richard W. - Tempe AZ
- Ulmer; Richard W. - Austin TX
| Patent | Date |
|---|---|
| Line interface for telephone App 20080043998 - Ulmer; Richard W. | 2008-02-21 |
| Memory devices and memory reading methods Grant 6,282,129 - Khoury , et al. August 28, 2 | 2001-08-28 |
| Low skew CMOS clock divider Grant 5,249,214 - Ulmer , et al. September 28, 1 | 1993-09-28 |
| Logic level shifter for 3 volt CMOS to 5 volt CMOS or TTL Grant 5,223,751 - Simmons , et al. June 29, 1 | 1993-06-29 |
| Start-up circuit for low power MOS crystal oscillator Grant 4,956,618 - Ulmer September 11, 1 | 1990-09-11 |
| High voltage detection circuit Grant 4,659,944 - Miller, Sr. , et al. April 21, 1 | 1987-04-21 |
| MOS current limiting output circuit Grant 4,612,497 - Ulmer September 16, 1 | 1986-09-16 |
| TTL to CMOS input buffer circuit for minimizing power consumption Grant 4,584,491 - Ulmer April 22, 1 | 1986-04-22 |
| Analog switch structure having low leakage current Grant 4,544,854 - Ulmer , et al. October 1, 1 | 1985-10-01 |
| Voltage generator circuit having compensation for process and temperature variation Grant 4,477,737 - Ulmer , et al. October 16, 1 | 1984-10-16 |
| Circuit for interfacing with both TTL and CMOS voltage levels Grant 4,472,647 - Allgood , et al. September 18, 1 | 1984-09-18 |
| MOS Power-on reset circuit Grant 4,385,245 - Ulmer May 24, 1 | 1983-05-24 |
| Capacitive DAC to filter interface circuit Grant 4,384,276 - Kelley , et al. May 17, 1 | 1983-05-17 |
| Switched capacitor temperature independent bandgap reference Grant 4,375,595 - Ulmer , et al. March 1, 1 | 1983-03-01 |
| Multiple function operational amplifier circuit Grant 4,370,632 - Allgood , et al. January 25, 1 | 1983-01-25 |
| Programmable A-law and .mu.-law DAC Grant 4,311,988 - Kelley , et al. January 19, 1 | 1982-01-19 |
| High voltage CMOS circuit Grant 4,191,898 - Ulmer March 4, 1 | 1980-03-04 |
| CMOS polarity reversal circuit Grant 4,139,880 - Ulmer , et al. February 13, 1 | 1979-02-13 |
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