Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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John D. Slingwine — 7 Patents

SSSequent Computer Systems: 3 patents #1 of 33Top 4%
Microsoft: 3 patents #13,486 of 40,388Top 35%
IBM: 1 patents #44,878 of 70,183Top 65%
Beaverton, OR: #777 of 3,140 inventorsTop 25%
Oregon: #5,753 of 28,073 inventorsTop 25%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
John D. Slingwine has been granted 7 US patents while listed as an inventor at Sequent Computer Systems. The first was granted in 1995 and the most recent in March 2014. John D. Slingwine ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list John D. Slingwine in Beaverton, OR, US.

Patents per Year

Patents granted per year, 1995 to 2014Bar chart with a peak of 2 patents in 2013.peak 21995: 1 patents19951997: 1 patents19971998: 1 patents19982001: 1 patents20012013: 2 patents20132014: 1 patents2014

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8667323 Proactive error scan and isolated error correction Sarosh C. Havewala, Neal R. Christiansen, Daniel Chan, Craig Ashley Barkhouse 2014-03-04 $30,366,000
8621276 File system resiliency management Sarosh C. Havewala, Neal R. Christiansen, Daniel Chan, Craig Ashley Barkhouse, Lane Haury +2 more 2013-12-31 $17,332,000
8607099 Online fault verification in a file system Sarosh C. Havewala, Neal R. Christiansen, Craig Ashley Barkhouse, Daniel Chan 2013-12-10 $31,292,000
6219690 Apparatus and method for achieving reduced overhead mutual exclusion and maintaining coherency in a multiprocessor system utilizing execution history and thread monitoring Paul E. McKenney 2001-04-17 $20,042,000
5727209 Apparatus and method for achieving reduced overhead mutual-exclusion and maintaining coherency in a multiprocessor system utilizing execution history and thread monitoring Paul E. McKenney 1998-03-10 $11,370,000
5608893 Method for maintaining data coherency using thread activity summaries in a multicomputer system Paul E. McKenney 1997-03-04 $6,147,000
5442758 Apparatus and method for achieving reduced overhead mutual exclusion and maintaining coherency in a multiprocessor system utilizing execution history and thread monitoring Paul E. McKenney 1995-08-15 $7,885,000