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USPTO Patent Rankings Data through Dec 31, 2025
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John E. Chilton — 5 Patents

QSQuickturn Design Systems: 5 patents #14 of 71Top 20%
Soquel, CA: #66 of 187 inventorsTop 40%
California: #107,996 of 386,348 inventorsTop 30%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
John E. Chilton has been granted 5 US patents while listed as an inventor at Quickturn Design Systems. The first was granted in 1998 and the most recent in October 2000. John E. Chilton ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list John E. Chilton in Soquel, CA, US.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6141636 Logic analysis subsystem in a time-sliced emulator Tony R. Sarno, Ingo Schaefer, Mark S. Papamarcos, Bernard Y. Chan, Michael C. Tsou 2000-10-31
5963736 Software reconfigurable target I/O in a circuit emulation system Tony R. Sarno, Ingo Schaefer, Mark S. Papamarcos, Curt Blanding 1999-10-05
5923865 Emulation system having multiple emulated clock cycles per emulator clock cycle and improved signal routing Tony R. Sarno, Ingo Schaefer 1999-07-13
5822564 Checkpointing in an emulation system Tony R. Sarno, Ingo Schaefer 1998-10-13 $2,725,000
5819065 System and method for emulating memory Tony R. Sarno, Ingo Schaefer 1998-10-06 $2,944,000