Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Dan Kolkowitz — 6 Patents

PLPlayspan: 2 patents #4 of 9Top 45%
FNFlash Networks: 1 patents #24 of 70Top 35%
IGIdm Global: 1 patents #4 of 8Top 50%
Visa: 1 patents #1,311 of 2,009Top 70%
Los Altos Hills, CA: #345 of 812 inventorsTop 45%
California: #94,478 of 386,348 inventorsTop 25%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Dan Kolkowitz has been granted 6 US patents while listed as an inventor at Playspan. The first was granted in 2011 and the most recent in December 2020. Dan Kolkowitz ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Dan Kolkowitz in Los Altos Hills, CA, US.

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
10872338 Transaction assessment and/or authentication Taher Elgamal, Kieran Gerard Sherlock 2020-12-22
9471920 Transaction assessment and/or authentication Taher Elgamal, Kieran Gerard Sherlock 2016-10-18
9043245 Apparatus and method for secure fulfillment of transactions involving virtual items Kaushal Mehta 2015-05-26
8924308 Apparatus and method for secure fulfillment of transactions involving virtual items Kaushal Mehta 2014-12-30
8888598 Transaction systems and methods for virtual items of massively multiplayer online games and virtual worlds Kaushal Mehta, Subramanian V. Peruvemba 2014-11-18
8086855 Access to PLMN networks for non-PLMN devices, and to issues arising in interfaces in general between PLMN and non-PLMN networks Eyal Katz, Stuart S. Jeffery, Ilan Zorman, Yair Karmi, Gil Ben-Noon 2011-12-27