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

ATAxcelis Technologies: 3 patents #78 of 300Top 30%
Lam Research: 1 patents #1,379 of 2,128Top 65%
Rockville, MD: #526 of 2,038 inventorsTop 30%
Maryland: #8,090 of 35,612 inventorsTop 25%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
David Ferris has been granted 4 US patents while listed as an inventor at Axcelis Technologies. The first was granted in 2005 and the most recent in November 2013. David Ferris ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list David Ferris in Rockville, MD, US.

Patents per Year

Patents granted per year, 2005 to 2013Bar chart with a peak of 1 patents in 2005.peak 12005: 1 patents20052007: 1 patents20072008: 1 patents20082013: 1 patents2013

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8580076 Plasma apparatus, gas distribution assembly for a plasma apparatus and processes therewith Alan F. Becknell, Thomas Buckley, Richard E. Pingree, Jr., Palanikumaran Sakthivel, Aseem K. Srivastava +1 more 2013-11-12 $9,816,000
7449416 Apparatus and plasma ashing process for increasing photoresist removal rate Alan F. Becknell, Philip Hammar 2008-11-11 $1,550,000
7163587 Reactor assembly and processing method David W. Kinnard 2007-01-16 $7,040,000
6897615 Plasma process and apparatus Alan C. Janos, Ivan L. Berry, III, Michael G. Ury 2005-05-24 $7,539,000