Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David Eugene Robertson — 19 Patents

RBRain Bird: 11 patents #21 of 274Top 8%
RMRain Bird Consumer Products Mfg.: 2 patents #7 of 38Top 20%
AMAnthony Manufacturing: 1 patents #9 of 32Top 30%
RMRain Bird Sprinkler, Mfg.: 1 patents #12 of 28Top 45%
UNUnknown: 1 patents #29,356 of 83,584Top 40%
Glendora, CA: #20 of 353 inventorsTop 6%
California: #31,067 of 386,348 inventorsTop 9%
Overall (All Time): #229,345 of 4,157,543Top 6%
19 Patents All Time
David Eugene Robertson has been granted 19 US patents while listed as an inventor at Rain Bird. The first was granted in 1986 and the most recent in August 2024. David Eugene Robertson ranks #229,345 of 4,157,543 US inventors in our database (top 5.5%). Patent records list David Eugene Robertson in Glendora, CA, US.

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDate
12053791 Irrigation nozzle with one or more grit vents David C. Belongia 2024-08-06
11660621 Reduced precipitation rate nozzle Samuel C. Walker, John James Wlassich, Lee James Shadbolt 2023-05-30
11406999 Irrigation nozzle with one or more grit vents David C. Belongia 2022-08-09
11247219 Reduced precipitation rate nozzle Samuel C. Walker, John James Wlassich, Lee James Shadbolt 2022-02-15
11154881 Rotary nozzle Samuel C. Walker, Lee James Shadbolt 2021-10-26
11000866 Rotary nozzles and deflectors Lee James Shadbolt 2021-05-11
10322423 Rotary nozzle Samuel C. Walker, Lee James Shadbolt 2019-06-18
9174227 Irrigation sprinkler nozzle Samuel C. Walker 2015-11-03
8783582 Adjustable arc irrigation sprinkler nozzle configured for positive indexing Eugene Ezekiel Kim 2014-07-22
6997393 Pop-up irrigation sprinklers Russdon Angold, Steve Han 2006-02-14
D486884 Irrigation sprinkler nozzle carrier tree Christian T. Gregory 2004-02-17
6234411 Combined nozzle set and lift tool for a pop-up sprinkler Samuel C. Walker 2001-05-22
D415415 Combined sprinkler nozzle carrier and display unit 1999-10-19
5351843 Folding display frame for forming column-like structures William J. Wichman 1994-10-04
D299748 Electronic acupuncture unit 1989-02-07
4787558 Rotary drive sprinkler Timothy C. Sexton, George H. Lockwood, Joseph D. Mason, Mark J. Mattson, Robert W. Patterson 1988-11-29
4781328 Rotating stream nozzle 1988-11-01
4625914 Rotary drive sprinkler Timothy C. Sexton, George H. Lockwood, Joseph D. Mason, Mark J. Mattson, Robert W. Patterson 1986-12-02
D282768 Sprinkler drive arm Hans D. Christen 1986-02-25