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

Robert Gruell — 1 Patent

OTOutput Technology: 1 patents #13 of 26Top 50%
Newman Lake, WA: #19 of 32 inventorsTop 60%
Washington: #48,569 of 76,902 inventorsTop 65%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Robert Gruell has been granted 1 US patent while listed as an inventor at Output Technology. All of these patents were granted in 1991. Robert Gruell ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Robert Gruell in Newman Lake, WA, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5070231 Roll-fusing assembly and method for thermal compensation in an electrophotographic printer Michael W. Bacus, Dick T. Price, Dale A. Lewis, Michael E. Demarchi, Karl L. C. Homa +1 more 1991-12-03