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

William Chu — 7 Patents

IBM: 6 patents #16,491 of 70,183Top 25%
UFUS Air Force: 1 patents #6,232 of 16,312Top 40%
Hyde Park, NY: #53 of 223 inventorsTop 25%
New York: #20,477 of 115,490 inventorsTop 20%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
William Chu has been granted 7 US patents while listed as an inventor at IBM. The first was granted in 1988 and the most recent in August 2013. William Chu ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list William Chu in Hyde Park, NY, US.

Patents per Year

Patents granted per year, 1988 to 2013Bar chart with a peak of 2 patents in 1993.peak 21988: 1 patents19881992: 1 patents19921993: 2 patents19931996: 1 patents19962005: 1 patents20052013: 1 patents2013

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8514374 Alignment method for semiconductor processing Todd C. Bailey, William A. Muth 2013-08-20 $3,918,000
6884734 Vapor phase etch trim structure with top etch blocking layer Frederick Buehrer, Derek Chen, Scott W. Crowder, Sadanand V. Deshpande, David V. Horak +4 more 2005-04-26 $8,819,000
5575888 Sidewall passivation by oxidation during refractory-metal plasma etching John Kosakowski, Kelly W. Foster, Christie R. K. Marrian, Martin C. Peckerar 1996-11-19
5250860 Three-level cascode differential current switch Carl Wong 1993-10-05 $6,887,000
5216667 Simultaneous bidirectional transceiver Andrew Z. Muszynski 1993-06-01 $16,040,000
5124591 Low power push pull driver Francis Chan, Edward B. Eichelberger, David Kiesling 1992-06-23 $17,034,000
4760289 Two-level differential cascode current switch masterslice Edward B. Eichelberger, Stephen E. Bello, Rolf O. Bergenn, John A. Ludwig, Richard F. Rizzolo 1988-07-26 $27,796,000