Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
DH

David K. Halliday — 2 Patents

IBM: 2 patents #32,839 of 70,183Top 50%
Greenock, GB: #3 of 16 inventorsTop 20%
Overall (All Time): #2,284,486 of 4,157,543Top 55%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5388136 X-ray inspection apparatus for electronic circuits Colin David McCall, Alexander S. McKinnon, Christopher D. Smith 1995-02-07
5065858 Gas-fed transfer track Nigel J. Akam, Donald M. Cameron, Raymond Paterson 1991-11-19