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

Robert A. Walker — 48 Patents

Google: 7 patents #3,814 of 22,993Top 20%
WDWalker Design: 4 patents #1 of 2Top 50%
BSBixby Energy Systems: 2 patents #3 of 6Top 50%
JCJames Howden & Co.: 1 patents #6 of 21Top 30%
PHPhysio-Control: 1 patents #221 of 303Top 75%
SCSelect Comfort: 1 patents #34 of 60Top 60%
TPThe Boots Company Plc: 1 patents #48 of 152Top 35%
FMFmc: 1 patents #1,077 of 1,735Top 65%
DYDynatech: 1 patents #1 of 15Top 7%
G&Greene, Tweed &: 1 patents #5 of 13Top 40%
San Francisco, CA: #510 of 26,999 inventorsTop 2%
California: #8,595 of 386,348 inventorsTop 3%
Overall (All Time): #57,596 of 4,157,543Top 2%
48 Patents All Time
Robert A. Walker has been granted 48 US patents while listed as an inventor at Google. The first was granted in 1980 and the most recent in January 2025. Robert A. Walker ranks #57,596 of 4,157,543 US inventors in our database (top 1.4%). Patent records list Robert A. Walker in San Francisco, CA, US.

Issued Patents All Time

Showing 1–25 of 48 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12211065 Conversion path performance measures and reports Sissie Ling-Ie Hsiao, Chao Cai, Eric W. Ewald, Cameron M. Tangney, Japjit Tulsi +2 more 2025-01-28
11941660 Conversion path performance measures and reports Sissie Ling-Ie Hsiao, Chao Cai, Eric W. Ewald, Cameron M. Tangney, Japjit Tulsi +2 more 2024-03-26 $93,619,000
11544739 Conversion path performance measures and reports Sissie Ling-Ie Hsiao, Chao Cai, Eric W. Ewald, Cameron M. Tangney, Japjit Tulsi +2 more 2023-01-03 $55,420,000
10588486 Multi-function video system with interchangeable medical tool Ken Peterson, Jennifer Elaine Hoss, Jennifer Jensen, Mitchell Smith, D Craig Edwards +2 more 2020-03-17
10360586 Conversion path performance measures and reports Sissie Ling-Ie Hsiao, Chao Cai, Eric W. Ewald, Cameron M. Tangney, Japjit Tulsi +2 more 2019-07-23 $53,689,000
9611822 Air filter and silencer 2017-04-04
9245279 Conversion path performance measures and reports Sissie Ling-Ie Hsiao, Chao Cai, Eric W. Ewald, Cameron M. Tangney, Japjit Tulsi +2 more 2016-01-26 $15,769,000
8548851 Conversion path performance measures and reports Liren Chen, Chao Cai, Eric W. Ewald, Cameron M. Tangney, Japjit Tulsi +4 more 2013-10-01 $36,601,000
8500398 Turbocharger heat shield 2013-08-06
8400477 Object resizing David S. Young 2013-03-19 $34,673,000
7811029 Woven soil stabilization system William T. Graham, Mark Doudlah, William N. Isermann, Jay Settersten, Paul Collins 2010-10-12
7811028 Hooded check tube Mary de la Rosa, William T. Graham, William N. Isermann, Mark Doudlah, Paul Collins +1 more 2010-10-12
7284550 Burn pot for furnace Ross Embertson 2007-10-23
7045701 Expression shoe Kevin Light, Jesse F. Dressler, Scott Johnson 2006-05-16
D521133 Biomass stove 2006-05-16
D519543 Expression shoe support bracket Kevin Light, Scott Johnson 2006-04-25
6994741 Protective filter cover 2006-02-07
6726738 Air filter assembly 2004-04-27
6705837 Welded connector for blade liner 2004-03-16
6475255 Serviceable air filter/oil separator assembly 2002-11-05
6422224 Remote air-oil separator 2002-07-23
6009846 Combination air-filter/air-oil separator with integral vacuum regulator 2000-01-04
5752902 Collapsible exercise device and method 1998-05-19
5479907 Combination in-line air-filter/air-oil separator/air-silencer with preseparator 1996-01-02
5347973 Vacuum relief valve 1994-09-20