Inventor
ULMER RICHARD W
US23 patents
⚠️ This page may combine multiple inventors who share the name “ULMER RICHARD W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MOTOROLA INC
16 patentsUS4612497ASep 16, 1986
MOS current limiting output circuit
MOTOROLA INC87 citations96
US4477737AOct 16, 1984
Voltage generator circuit having compensation for process and temperature variation
MOTOROLA INC61 citations96
US4472647ASep 18, 1984
Circuit for interfacing with both TTL and CMOS voltage levels
MOTOROLA INC68 citations95
US4139880AFeb 13, 1979
CMOS polarity reversal circuit
MOTOROLA INC84 citations95
US4584491AApr 22, 1986
TTL to CMOS input buffer circuit for minimizing power consumption
MOTOROLA INC31 citations92
US4544854AOct 1, 1985
Analog switch structure having low leakage current
MOTOROLA INC31 citations92
US4375595AMar 1, 1983
Switched capacitor temperature independent bandgap reference
MOTOROLA INC47 citations92
US4659944AApr 21, 1987
High voltage detection circuit
MOTOROLA INC39 citations88
US4385245AMay 24, 1983
MOS Power-on reset circuit
MOTOROLA INC22 citations82
US4191898AMar 4, 1980
High voltage CMOS circuit
MOTOROLA INC21 citations82
US4383223AMay 10, 1983
CMOS Operational amplifier employing push-pull output stage
MOTOROLA INC17 citations74
US4278929AJul 14, 1981
Regulated negative voltage supply
MOTOROLA INC7 citations74
US4143362AMar 6, 1979
High resolution auto-zero circuit for analog-to-digital converter
MOTOROLA INC10 citations74
US4370632AJan 25, 1983
Multiple function operational amplifier circuit
MOTOROLA INC15 citations73
US4355285AOct 19, 1982
Auto-zeroing operational amplifier circuit
MOTOROLA INC15 citations73
US4311988AJan 19, 1982
Programmable A-law and μ-law DAC
MOTOROLA INC16 citations73
VLSI TECHNOLOGY INC
6 patentsUS5223751AJun 29, 1993
Logic level shifter for 3 volt cmos to 5 volt cmos or ttl
VLSI TECHNOLOGY INC54 citations96
US4956618ASep 11, 1990
Start-up circuit for low power MOS crystal oscillator
VLSI TECHNOLOGY INC91 citations96
US6282129B1Aug 28, 2001
Memory devices and memory reading methods
VLSI TECHNOLOGY INC15 citations83
US6232801B1May 15, 2001
Comparators and comparison methods
VLSI TECHNOLOGY INC15 citations83
US5249214ASep 28, 1993
Low skew CMOS clock divider
VLSI TECHNOLOGY INC15 citations74
US5065042ANov 12, 1991
Self-configuring clock interface circuit
VLSI TECHNOLOGY INC19 citations73