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USPTO Patent Rankings Data through Dec 31, 2025
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Robert Essaff — 9 Patents

LHLinear Technology Holding: 8 patents #32 of 326Top 10%
Fremont, CA: #1,962 of 9,298 inventorsTop 25%
California: #67,547 of 386,348 inventorsTop 20%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
Robert Essaff has been granted 9 US patents while listed as an inventor at Linear Technology Holding. The first was granted in 1989 and the most recent in October 2000. Robert Essaff ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Robert Essaff in Fremont, CA, US.

Patents per Year

Patents granted per year, 1989 to 2000Bar chart with a peak of 3 patents in 1997.peak 31989: 1 patents19891991: 1 patents19911996: 1 patents19961997: 3 patents19971998: 1 patents19982000: 2 patents2000

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6130575 High-speed switching regulator drive circuit Carl T. Nelson 2000-10-10 $301,505,000
6111439 High-speed switching regulator drive circuit Carl T. Nelson 2000-08-29 $330,580,000
5815015 Synchronization and shutdown circuits and methods in high-speed switching regulator drive circuits Carl T. Nelson 1998-09-29 $51,097,000
5672988 High-speed switching regulator drive circuit Carl T. Nelson 1997-09-30 $55,493,000
5668493 Circuits and methods for increasing switch turn-off speed in high-speed switching regulator drive circuits Carl T. Nelson 1997-09-16 $57,123,000
5656965 Turn-off circuitry for a high-speed switching regulator drive circuit Carl T. Nelson 1997-08-12 $58,917,000
5589761 Dual polarity voltage regulator circuits and methods for providing voltage regulation Carl T. Nelson 1996-12-31 $25,455,000
4998148 Schottky diode having injected current collector 1991-03-05
4812961 Charge pump circuitry having low saturation voltage and current-limited switch Robert C. Dobkin 1989-03-14 $1,281,000