Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David Douglas — 5 Patents

QTQ Technology: 3 patents #2 of 4Top 50%
Palo Alto, CA: #3,748 of 9,675 inventorsTop 40%
California: #107,996 of 386,348 inventorsTop 30%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
David Douglas has been granted 5 US patents while listed as an inventor at Q Technology. The first was granted in 2011 and the most recent in June 2025. David Douglas ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list David Douglas in Palo Alto, CA, US.

Patents per Year

Patents granted per year, 2011 to 2025Bar chart with a peak of 1 patents in 2011.peak 12011: 1 patents20112012: 1 patents20122016: 1 patents20162019: 1 patents20192025: 1 patents2025

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
12328806 Light source system and method of operation Robert Legg, Christopher Mayes, Bruce Dunham, Joseph Conway, George R. Neil +2 more 2025-06-10
10473842 Wide dispersion source multiple path light direction system 2019-11-12
9285081 LED high bay lighting source Thomas E. Stack 2016-03-15
D665123 Lighting system bracket 2012-08-07
7862195 Multiple positioned light source to achieve uniform or graded illumination Thomas E. Stack, Samuel Lee 2011-01-04