Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David Sprott — 3 Patents

NONoranda: 2 patents #27 of 153Top 20%
ALAgresearch Limited: 1 patents #167 of 547Top 35%
Lansing, MI: #109 of 487 inventorsTop 25%
Michigan: #27,426 of 86,293 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
David Sprott has been granted 3 US patents while listed as an inventor at Noranda. The first was granted in 1986 and the most recent in December 1992. David Sprott ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list David Sprott in Lansing, MI, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5172480 Borehole deviation monitor Vladimir M. Labuc, Michel Hamelin, Patrick Andrieux 1992-12-22
4884250 Accelerometer for blast monitoring Frank Kitzinger, Michel Menard 1989-11-28
4627338 Apparatus for the treatment of ruminant forage material or soil C. Alan Rotz 1986-12-09 $214,000