Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
DF

David Fisher — 55 Patents

Nortel Networks Limited: 12 patents #143 of 5,294Top 3%
3C3Com: 12 patents #55 of 1,250Top 5%
RSR2 Semiconductor: 9 patents #3 of 12Top 25%
PLPlastic Logic Limited: 8 patents #6 of 73Top 9%
SDSparrow Detect: 5 patents #1 of 2Top 50%
SPStc Plc: 4 patents #11 of 231Top 5%
IEInternational Standard Electric: 1 patents #147 of 567Top 30%
BUBurroughs: 1 patents #265 of 604Top 45%
SBSynchrony Bank: 1 patents #83 of 129Top 65%
Menlo Park, CA: #95 of 3,774 inventorsTop 3%
California: #6,830 of 386,348 inventorsTop 2%
Overall (All Time): #45,454 of 4,157,543Top 2%
55 Patents All Time
David Fisher has been granted 55 US patents while listed as an inventor at 3Com. The first was granted in 1985 and the most recent in December 2023. David Fisher ranks #45,454 of 4,157,543 US inventors in our database (top 1.1%). Patent records list David Fisher in Menlo Park, CA, US.

Patents per Year

Patents granted per year, 1985 to 2023Bar chart with a peak of 5 patents in 2001.peak 51985: 2 patents19851988: 1 patents1989: 1 patents1990: 1 patents19901993: 2 patents1994: 2 patents1995: 1 patents19951996: 2 patents1997: 1 patents1999: 3 patents19992000: 2 patents2001: 5 patents2002: 2 patents20022003: 1 patents2004: 3 patents2006: 3 patents20062009: 3 patents2010: 2 patents2011: 1 patents20112012: 3 patents2013: 2 patents2014: 2 patents20142015: 2 patents2017: 1 patents2018: 1 patents20182020: 1 patents2021: 3 patents2023: 2 patents2023

Issued Patents All Time

Showing 1–25 of 55 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11835449 Generating signatures based on sensing gas concentration conditions Eric R. Crosson 2023-12-05
11828705 Apparatus and method for spectroscopically detecting a sample Eric R. Crosson 2023-11-28
11022544 Generating signatures based on sensing gas concentration conditions Eric R. Crosson 2021-06-01
10976248 Tunable light source cavity detection using a plurality of axial-plus-transverse modes Eric R. Crosson 2021-04-13
10884719 Dynamic model reflection 2021-01-05 $262,803,000
10724946 Tunable light source cavity detection using a plurality of axial-plus-transverse modes Eric R. Crosson 2020-07-28
9991782 Control of conversion ratios of a power source block and bidirectional active filter Edward P. Coleman, Eric B. Rodal, Jonathan M. Audy 2018-06-05
9716433 Control of conversion ratios of a power source block and a bidirectional active filter Edward P. Coleman, Eric B. Rodal, Jonathan M. Audy 2017-07-25
9069365 DC-DC converter enabling rapid output voltage changes James E. Brown, Daniel Dobkin, Pablo Moreno Galbis, Cory Severson 2015-06-30
9001024 Electronic document reader Carl Hayton, William Reeves, Ben Watson 2015-04-07
8773200 Decoupling circuits for filtering a voltage supply of multiple power amplifiers Cory Severson, Ravi Ramachandran 2014-07-08
8634171 Over voltage protection of a switching converter Lawrence M. Burns 2014-01-21
8593128 Stacked NMOS DC-to-DC power conversion Lawrence M. Burns 2013-11-26
8362649 Multi-use voltage regulator Ravi Ramachandran 2013-01-29
8233250 Over voltage protection of switching converter Lawrence M. Burns 2012-07-31
8212536 Stacked NMOS DC-to-DC power conversion Lawrence M. Burns 2012-07-03
8203546 Electronic document reading devices Ben Watson, Nick Sandham, Duncan Barclay, Simon Jones, Carl Hayton +1 more 2012-06-19
7920320 Electronic reading devices Ben Watson, Nick Sandham, Duncan Barclay, Simon Jones, Carl Hayton +1 more 2011-04-05
D622273 Electronic document reader Carl Hayton, Ben Watson, Nick Sandham, Duncan Barclay, Simon Jones +1 more 2010-08-24
RE41501 Electronic document reader Ben Watson, Nick Sandham, Duncan Barclay, Simon Jones, Carl Hayton +1 more 2010-08-17
D606993 Electronic document reader Ben Watson, Nick Sandham, Duncan Barclay, Simon Jones, Carl Hayton +1 more 2009-12-29
D603398 Electronic document reader Ben Watson, Nick Sandham, Duncan Barclay, Simon Jones, Carl Hayton +1 more 2009-11-03
D585888 Electronic document reader Ben Watson, Nick Sandham, Duncan Barclay, Simon Jones, Carl Hayton +1 more 2009-02-03
7009964 Rotator switch data path structures Michel Langevin 2006-03-07 $12,053,000
7005969 Power transfer apparatus for concurrently transmitting data and power over data wires Lawrence M. Burns, Stephen E. Muther 2006-02-28