Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Gregory Purdy — 6 Patents

IBM: 6 patents #16,491 of 70,183Top 25%
Hopewell Junction, NY: #219 of 648 inventorsTop 35%
New York: #23,374 of 115,490 inventorsTop 25%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Gregory Purdy has been granted 6 US patents while listed as an inventor at IBM. The first was granted in 2012 and the most recent in September 2017. Gregory Purdy ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Gregory Purdy in Hopewell Junction, NY, US.

Patents per Year

Patents granted per year, 2012 to 2017Bar chart with a peak of 2 patents in 2016.peak 22012: 1 patents20122013: 1 patents20132015: 1 patents20152016: 2 patents20162017: 1 patents2017

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9767092 Information extraction in a natural language understanding system Rajesh Balchandran, Linda M. Boyer 2017-09-19 $2,669,000
9454525 Information extraction in a natural language understanding system Rajesh Balchandran, Linda M. Boyer 2016-09-27 $4,099,000
9342588 Reclassification of training data to improve classifier accuracy Rajesh Balchandran, Linda M. Boyer 2016-05-17 $3,602,000
9058319 Sub-model generation to improve classification accuracy Rajesh Balchandran, Linda M. Boyer 2015-06-16 $2,098,000
8521511 Information extraction in a natural language understanding system Rajesh Balchandran, Linda M. Boyer 2013-08-27 $5,858,000
8285539 Extracting tokens in a natural language understanding application Rajesh Balchandran, Linda M. Boyer 2012-10-09 $6,551,000