Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David E. Blair — 2 Patents

DXDximaging: 1 patents #8 of 22Top 40%
EAE.I. Du Pont De Nemours And: 1 patents #10,995 of 12,129Top 95%
Chester Springs, PA: #107 of 227 inventorsTop 50%
Pennsylvania: #30,766 of 74,527 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
David E. Blair has been granted 2 US patents while listed as an inventor at Dximaging. The first was granted in 1990 and the most recent in November 1995. David E. Blair ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list David E. Blair in Chester Springs, PA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5471287 System for replenishing liquid electrostatic developer William A. Houle, Gregg A. Lane, James R. Larson, Kathryn A. Pearlstine 1995-11-28 $8,768,000
4923778 Use of high percent solids for improved liquid toner preparation Bradley J. Gollhardt, James R. Larson 1990-05-08