Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Robert B. Lefferts — 15 Patents

SYSynopsys: 12 patents #67 of 2,302Top 3%
LSLattice Semiconductor: 2 patents #213 of 544Top 40%
BTBipolar Integrated Technology: 1 patents #9 of 14Top 65%
Portland, OR: #1,218 of 9,213 inventorsTop 15%
Oregon: #2,909 of 28,073 inventorsTop 15%
Overall (All Time): #307,048 of 4,157,543Top 8%
15 Patents All Time
Robert B. Lefferts has been granted 15 US patents while listed as an inventor at Synopsys. The first was granted in 1991 and the most recent in May 2022. Robert B. Lefferts ranks #307,048 of 4,157,543 US inventors in our database (top 7.4%). Patent records list Robert B. Lefferts in Portland, OR, US.

Patents per Year

Patents granted per year, 1991 to 2022Bar chart with a peak of 2 patents in 2007.peak 21991: 1 patents19911997: 1 patents2002: 1 patents20022007: 2 patents2008: 1 patents20082012: 2 patents2015: 2 patents20152016: 1 patents2017: 1 patents20172019: 1 patents2020: 1 patents20202022: 1 patents2022

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11334705 Electrical circuit design using cells with metal lines Naveen John, Luis Jose H. Alves, Amanda J. Woon-Fat, Neelakantan Gopalan, Menaka Chandramohan 2022-05-17 $106,794,000
10741538 Method and apparatus for floating or applying voltage to a well of an integrated circuit Victor Moroz, Jamil Kawa, James David Sproch 2020-08-11 $23,463,000
10339249 Using color pattern assigned to shapes for custom layout of integrated circuit (IC) designs 2019-07-02 $21,466,000
9728528 Method and apparatus for floating or applying voltage to a well of an integrated circuit Victor Moroz, Jamil Kawa, James David Sproch 2017-08-08 $9,831,000
9287253 Method and apparatus for floating or applying voltage to a well of an integrated circuit Victor Moroz, Jamil Kawa, James David Sproch 2016-03-15 $5,443,000
8976497 Preventing electrostatic discharge (ESD) failures across voltage domains Peter C. de Jong, Roland G. de Jonge 2015-03-10 $5,388,000
8958186 Mitigating cross-domain transmission of electrostatic discharge (ESD) events Peter C. de Jong, Roland G. de Jonge 2015-02-17 $6,189,000
8208591 Method and apparatus for performing adaptive equalization James P. Flynn, Junqi Hua, Richard H. Steeves, John T. Stonick, Daniel K. Weinlader +3 more 2012-06-26 $5,356,000
8184757 Pattern agnostic on-die scope James P. Flynn, Junqi Hua, Richard H. Steeves, John T. Stonick, Daniel K. Weinlader +3 more 2012-05-22 $9,429,000
7345992 System and method for embedding a sub-channel in a block coded data stream James Gorecki, John T. Stonick, Shawn Searles, William S. Check, Jr. 2008-03-18 $2,863,000
7262621 Method and apparatus for integrated mixed-signal or analog testing Aaron J. Caffee, Christopher S. Jones, Ross Segelken, Jeffrey L. Sonntag, Daniel K. Weinlader 2007-08-28 $4,513,000
7158575 System and method for embedding a sub-channel in a block coded data stream James Gorecki, John T. Stonick, Shawn Searles, William S. Check, Jr. 2007-01-02
6370071 High voltage CMOS switch Ravindar M. Lall 2002-04-09 $23,010,000
5670907 VBB reference for pumped substrates James Gorecki, Ravindar M. Lall 1997-09-23 $18,869,000
5043939 Soft error immune memory Mark Slamowitz 1991-08-27