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

Frederick S. Grennan — 3 Patents

IBM: 3 patents #26,335 of 70,183Top 40%
San Jose, CA: #14,697 of 32,062 inventorsTop 50%
California: #150,760 of 386,348 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Frederick S. Grennan has been granted 3 US patents while listed as an inventor at IBM. The first was granted in 2010 and the most recent in November 2023. Frederick S. Grennan ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Frederick S. Grennan in San Jose, CA, US.

Patents per Year

Patents granted per year, 2010 to 2023Bar chart with a peak of 1 patents in 2010.peak 12010: 1 patents20102019: 1 patents20192023: 1 patents2023

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11829324 Indexing multiple types of data to facilitate rapid re-indexing of one or more types of data David O. Been, Michael Busch, Osamu Furusawa, Fumihiko Terui, Justo L. Perez 2023-11-28 $7,743,000
10394754 Indexing multiple types of data to facilitate rapid re-indexing of one or more types of data David O. Been, Michael Busch, Osamu Furusawa, Fumihiko Terui, Justo L. Perez 2019-08-27 $1,335,000
7788253 Global anchor text processing Ronny Lempel, Andreas Neumann 2010-08-31 $3,369,000