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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Delroy Walker — 4 Patents

FSFusion Systems: 4 patents #5 of 62Top 9%
Hyattsville, MD: #43 of 215 inventorsTop 20%
Maryland: #8,090 of 35,612 inventorsTop 25%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Delroy Walker has been granted 4 US patents while listed as an inventor at Fusion Systems. The first was granted in 1988 and the most recent in October 1997. Delroy Walker ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Delroy Walker in Hyattsville, MD, US.

Patents per Year

Patents granted per year, 1988 to 1997Bar chart with a peak of 2 patents in 1991.peak 21988: 1 patents19881991: 2 patents19911997: 1 patents1997

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5674039 System for transferring articles between controlled environments Joseph Zihmer, Danny Furches, Christopher Garmer 1997-10-07
5021704 Method and apparatus for cooling electrodeless lamps Demetri Telionis 1991-06-04
5005519 Reaction chamber having non-clouded window John C. Egermeier, Janet L. Ellzey 1991-04-09
4772124 Probe for a radiometer Robert D. Wooten, James D. Hill 1988-09-20