Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David Esley Long — 13 Patents

ATAT&T: 8 patents #2,291 of 18,772Top 15%
ASAgere Systems: 1 patents #984 of 1,849Top 55%
AGAgere Systems Guardian: 1 patents #274 of 810Top 35%
Calabasas, CA: #270 of 4,119 inventorsTop 7%
California: #47,433 of 386,348 inventorsTop 15%
Overall (All Time): #362,438 of 4,157,543Top 9%
13 Patents All Time
David Esley Long has been granted 13 US patents while listed as an inventor at AT&T. The first was granted in 1987 and the most recent in May 2010. David Esley Long ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list David Esley Long in Calabasas, CA, US.

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7721233 Efficient large-scale full-wave simulation Sharad Kapur 2010-05-18
6871167 System and method for determining capacitance for large-scale integrated circuits Sharad Kapur 2005-03-22
6513001 Efficient electromagnetic full-wave simulation in layered semiconductor media Sharad Kapur 2003-01-28 $21,595,000
6314545 Quadrature solutions for 3D capacitance extraction Sharad Kapur 2001-11-06 $4,081,000
6247108 Memory management during processing of binary decision diagrams in a computer system 2001-06-12 $29,146,000
6188291 Injection locked multi-phase signal generator Venugopal Gopinathan, Peter R. Kinget, Robert C. Melville 2001-02-13 $25,854,000
6182270 Low-displacement rank preconditioners for simplified non-linear analysis of circuits and other devices Peter Feldmann, Robert C. Melville 2001-01-30 $50,037,000
6072947 Method of making an integrated circuit including noise modeling and prediction Jaijeet Roychowdhury, Peter Feldmann 2000-06-06 $98,388,000
6064808 Method and apparatus for designing interconnections and passive components in integrated circuits and equivalent structures by efficient parameter extraction Sharad Kapur, Jingsong Zhao 2000-05-16 $71,533,000
6051027 Efficient three dimensional extraction Sharad Kapur, Jingsong Zhao 2000-04-18 $71,367,000
5867416 Efficient frequency domain analysis of large nonlinear analog circuits using compressed matrix storage Peter Feldmann, Robert C. Melville 1999-02-02 $124,718,000
4907764 Infrared radiation powered lightweight aircraft 1990-03-13
4697761 High altitude reconnaissance platform 1987-10-06