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

Robert Johnston — 8 Patents

LILightlogic: 1 patents #2 of 4Top 50%
UNUnknown: 1 patents #29,356 of 83,584Top 40%
Lincoln, NE: #145 of 1,303 inventorsTop 15%
Nebraska: #528 of 5,697 inventorsTop 10%
Overall (All Time): #600,572 of 4,157,543Top 15%
8 Patents All Time
Robert Johnston has been granted 8 US patents while listed as an inventor at Lightlogic. The first was granted in 1981 and the most recent in March 2012. Robert Johnston ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Robert Johnston in Lincoln, NE, US.

Patents per Year

Patents granted per year, 1981 to 2012Bar chart with a peak of 2 patents in 1989.peak 21981: 1 patents19811989: 2 patents19891992: 1 patents19922000: 2 patents20002003: 1 patents20032012: 1 patents2012

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
D655364 Buoyant assistive device 2012-03-06
6550376 Twin screw press with interrupted flights 2003-04-22
6117321 External tension adjustment device for a filtering sleeve in a filtering machine 2000-09-12
6023932 Topical cooling device 2000-02-15
5140630 Added main line apparatus James L. Fry, Larry Martin 1992-08-18
4880149 Liquid metering device John Scholefield 1989-11-14
4841905 Sample processing unit John Scholefield 1989-06-27
4305872 Polypeptide derivatives James L. Balk, John T. Pelton 1981-12-15