KH

Keiji Hirai

SO Sony: 3 patents #10,744 of 25,231Top 45%
UN Unknown: 2 patents #12,644 of 83,584Top 20%
Overall (All Time): #952,955 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
11274446 Screw-type rebar joint structure of deformed rebar and manufacturing method thereof Kozo Wakiyama, Akira Fukuda 2022-03-15
D743581 Reinforcing bar Kozo Wakiyama, Akira Fukuda 2015-11-17
8200873 Editing system, computer, timing notice apparatus, computer program, and method for acquiring timing Koji Tsukimori 2012-06-12
7266286 Editing system and method and distribution medium Seiji Tanizawa, Satoru Tobita, Hideaki Miyauchi, Kazushi Sato 2007-09-04
6356701 Editing system and method and distribution medium Seiji Tanizawa, Satoru Tobita, Hideaki Miyauchi, Kazushi Sato 2002-03-12