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

Warren R. Hedrick — 3 Patents

INInterpace: 3 patents #2 of 18Top 15%
Holland, MI: #449 of 1,299 inventorsTop 35%
Michigan: #27,426 of 86,293 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Warren R. Hedrick has been granted 3 US patents while listed as an inventor at Interpace. The first was granted in 1984 and the most recent in March 1985. Warren R. Hedrick ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Warren R. Hedrick in Holland, MI, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4502370 Insulated chimney assembly James P. Baileys 1985-03-05
4460121 Thermally controlled vent damper 1984-07-17
4445637 Air register with automatic zone control 1984-05-01