RD

Richard E. DeFreitas

DR Deltalab Research: 5 patents #1 of 3Top 35%
AS Analog And Digital Systems: 4 patents #1 of 6Top 20%
📍 Westford, MA: #169 of 1,013 inventorsTop 20%
🗺 Massachusetts: #12,758 of 88,656 inventorsTop 15%
Overall (All Time): #493,293 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
12181901 Automated tank systems and methods for use in oil and gas extraction operation Jeremy Myers, Glenn Doiron 2024-12-31
4682362 Generating narrowly-separated variable-frequency clock signals Daniel T. Sullivan 1987-07-21
4612654 Digital encoding circuitry 1986-09-16
RE31976 Circuitry for generating reference signal for delta encoding systems 1985-08-27
RE31720 Digital encoding circuitry John J. Blake 1984-10-30
4313204 Digital encoding circuitry with means to reduce quantization noise 1982-01-26
4305050 Circuitry for generating reference signal for delta encoding systems 1981-12-08
4303800 Reproducing multichannel sound 1981-12-01
4254502 Digital encoding circuitry John J. Blake 1981-03-03
4190801 Digital encoding circuitry 1980-02-26