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USPTO Patent Rankings Data through Sept 30, 2025
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Sukumar Rajauria — 4 Patents in 2021

WTWestern Digital Technologies: 4 patents #68 of 736Top 10%
San Jose, CA: #689 of 6,693 inventorsTop 15%
California: #5,616 of 66,859 inventorsTop 9%
Overall (2021): #39,426 of 548,734Top 8%
4 Patents 2021

Issued Patents 2021

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
11170814 Heat treatment of NFT on heat-assisted magnetic recording device Oscar J. Ruiz, Erhard Schreck 2021-11-09
10950266 In-situ NFT pre-treatment to accumulate optically transparent material on NFT to improve reliability Yuichi Aoki, Yukio Kato, Kosuke Nagase, Kiyoshi Hashimoto, Qing Dai 2021-03-16
10950267 HAMR media to assist optically transparent build-up on NFT to improve reliability Yuichi Aoki, Yukio Kato, Kosuke Nagase, Kiyoshi Hashimoto, Huaming Xu +1 more 2021-03-16
10910007 Heat-assisted magnetic recording device capable of providing negative electrical potential at NFT Tan Trinh, Yuichi Aoki, Kosuke Nagase, Erhard Schreck, Qing Dai 2021-02-02