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

David Roy Winterbottom — 4 Patents

SLSortex Limited: 1 patents #9 of 13Top 70%
UNUnknown: 1 patents #29,356 of 83,584Top 40%
Colchester, GB: #24 of 196 inventorsTop 15%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
David Roy Winterbottom has been granted 4 US patents while listed as an inventor at Sortex Limited. The first was granted in 1994 and the most recent in May 2012. David Roy Winterbottom ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list David Roy Winterbottom in Colchester, GB.

Patents per Year

Patents granted per year, 1994 to 2012Bar chart with a peak of 1 patents in 1994.peak 11994: 1 patents19942001: 1 patents20012011: 1 patents20112012: 1 patents2012

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8189247 Security holograms John David Wiltshire, Satyamoorthy Kabilian 2012-05-29
8064116 Apparatus and method for producing a hologram Richard H. Evans, John David Wiltshire 2011-11-22
6191859 Optical systems for use in sorting apparatus Laurence Robinson 2001-02-20
5289253 Pattern scanning device Brendan D. Costello 1994-02-22