Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Earl David Ray — 4 Patents

BOBorgwarner: 4 patents #274 of 1,600Top 20%
White Lake, MI: #77 of 337 inventorsTop 25%
Michigan: #22,248 of 86,293 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Earl David Ray has been granted 4 US patents while listed as an inventor at Borgwarner. The first was granted in 2012 and the most recent in January 2019. Earl David Ray ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Earl David Ray in White Lake, MI, US.

Patents per Year

Patents granted per year, 2012 to 2019Bar chart with a peak of 1 patents in 2012.peak 12012: 1 patents20122013: 1 patents20132017: 1 patents20172019: 1 patents2019

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10174836 Speed-responsive mechanical range lock for a transfer case Larry A. Pritchard 2019-01-08 $16,730,000
9605753 Speed-responsive mechanical range lock for a transfer case Larry A. Pritchard 2017-03-28 $19,110,000
8396633 Automatic axle disconnect John R. Buszek, Brian Ginther 2013-03-12 $23,594,000
8204657 Automatic axle disconnect John R. Buszek, Brian Ginther 2012-06-19 $26,484,000