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

Robert Kowal — 5 Patents

Microsoft: 1 patents #24,968 of 40,388Top 65%
San Francisco, CA: #8,231 of 26,999 inventorsTop 35%
California: #107,996 of 386,348 inventorsTop 30%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Robert Kowal has been granted 5 US patents while listed as an inventor at Microsoft. The first was granted in 1993 and the most recent in November 2016. Robert Kowal ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Robert Kowal in San Francisco, CA, US.

Patents per Year

Patents granted per year, 1993 to 2016Bar chart with a peak of 1 patents in 1993.peak 11993: 1 patents19931996: 1 patents19961998: 1 patents19982014: 1 patents20142016: 1 patents2016

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
D772873 Receiver John Miles 2016-11-29
8727779 Authoring of demonstration environments John Eversole, David Gunasegaram 2014-05-20 $34,318,000
5710803 Emergency phone messaging system Donna Kowal 1998-01-20
5518887 Immunoassays empolying generic anti-hapten antibodies and materials for use therein Robert G. Parsons 1996-05-21 $180,457,000
5270166 Immunoassays employing generic anti-hapten antibodies and materials for use therein Robert G. Parsons, Vincent T. Yue 1993-12-14 $29,254,000