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

Douglas J Heller — 4 Patents

Delphi Technologies: 1 patents #2,130 of 4,124Top 55%
Flourtown, PA: #15 of 46 inventorsTop 35%
Pennsylvania: #19,360 of 74,527 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Douglas J Heller has been granted 4 US patents while listed as an inventor at Delphi Technologies. The first was granted in 2002 and the most recent in January 2005. Douglas J Heller ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Douglas J Heller in Flourtown, PA, US.

Patents per Year

Patents granted per year, 2002 to 2005Bar chart with a peak of 2 patents in 2002.peak 22002: 2 patents20022004: 1 patents20042005: 1 patents2005

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6847001 Method for metallurgically joining a tube to a member Venkatasubramanian Ananthanarayanan, Dharmendra M. Ramachandra, Michael Froning 2005-01-25 $6,634,000
6683623 System and method for providing and accessing educational information over a computer network James S. Cassano, Jonathan Schmalzbach 2004-01-27
D455435 Computer generated image for a display screen James S. Cassano, Jonathan Schmalzbach 2002-04-09
D455436 Computer generated image for a display screen James S. Cassano, Jonathan Schmalzbach 2002-04-09