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

David A. Stachelczyk — 3 Patents

ExxonMobil: 3 patents #3,063 of 10,161Top 35%
Houston, TX: #6,736 of 21,073 inventorsTop 35%
Texas: #41,402 of 125,132 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
David A. Stachelczyk has been granted 3 US patents while listed as an inventor at ExxonMobil. The first was granted in 2006 and the most recent in June 2009. David A. Stachelczyk ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list David A. Stachelczyk in Houston, TX, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7553791 Heavy aromatics conversion catalyst composition and processes therefor and therewith Timothy McMinn 2009-06-30 $502,106,000
7485763 Using a catalyst having two different zeolites for transalkylation of a C9+ aromatic feed John S. Buchanan, Ronald J. Cimini, Robert A. Crane, Wenyih F. Lai, Jose G. Santiesteban +3 more 2009-02-03 $957,470,000
7148391 Heavy aromatics processing John S. Buchanan, Ronald J. Cimini, Frank Wenyih Lai, Jose G. Santiesteban, David L. Stern +3 more 2006-12-12 $318,891,000