Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Robert Johnstone — 2 Patents

BPBookham Technology, Plc: 2 patents #24 of 189Top 15%
Gosport, GB: #43 of 116 inventorsTop 40%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Robert Johnstone has been granted 2 US patents while listed as an inventor at Bookham Technology, Plc. The first was granted in 2006 and the most recent in April 2007. Robert Johnstone ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Robert Johnstone in Gosport, GB.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7204932 Polarization rotators Robert G. Walker, Robert Griffin 2007-04-17 $1,443,000
7035486 Photonic integrated device Robert Griffin, Robert G. Walker 2006-04-25 $1,799,000