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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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EngKean Sim — 1 Patent

Bridgestone: 1 patents #1,586 of 2,860Top 60%
Nishitokyo, JP: #176 of 277 inventorsTop 65%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
EngKean Sim has been granted 1 US patent while listed as an inventor at Bridgestone. All of these patents were granted in 2002. EngKean Sim ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list EngKean Sim in Nishitokyo, JP.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6468401 Formation of metal compound thin film and preparation of rubber composite material Masato Yoshikawa, Hideo Sugiyama, Yukihiro Kusano, Kazuo Naito 2002-10-22