Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Akihiro Itou — 29 Patents

Panasonic: 20 patents #998 of 21,108Top 5%
JCJapan Epoxy Resins Co.: 4 patents #1 of 6Top 20%
MCMitsubishi Chemical: 2 patents #928 of 3,022Top 35%
Mitsubishi Electric: 2 patents #11,187 of 25,717Top 45%
YKYkk: 1 patents #472 of 845Top 60%
Kyoto, JP: #67 of 140 inventorsTop 50%
Overall (All Time): #127,210 of 4,157,543Top 4%
29 Patents All Time

Issued Patents All Time

Showing 26–29 of 29 patents

Patent #TitleCo-InventorsDate
7307128 Epoxy compound, preparation method thereof, and use thereof Atsuhito Hayakawa 2007-12-11
7304120 Epoxy compound, preparation method thereof, and use thereof Atsuhito Hayakawa 2007-12-04
7285602 Granular epoxy resin, production method thereof, and granular epoxy resin package Yasuyuki Murata, Atsuhito Hayakawa 2007-10-23
7070861 Flame retardant epoxy resin composition, and prepreg and fiber-reinforced composite materials made by using the composition Masato Taguchi, Yasushi Suzumura, Tadayoshi Saitou 2006-07-04