Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
TY

Tosirou Yamaguchi — 5 Patents

KCKuraray Co.: 4 patents #386 of 1,827Top 25%
LPLinzer Products: 1 patents #4 of 6Top 70%
Osaka, JP: #7,490 of 24,344 inventorsTop 35%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Tosirou Yamaguchi has been granted 5 US patents while listed as an inventor at Kuraray Co.. The first was granted in 1999 and the most recent in November 2012. Tosirou Yamaguchi ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Tosirou Yamaguchi in Osaka, JP.

Patents per Year

Patents granted per year, 1999 to 2012Bar chart with a peak of 1 patents in 1999.peak 11999: 1 patents19992003: 1 patents20032006: 1 patents20062008: 1 patents20082012: 1 patents2012

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
8312588 Cleaning fabric and window screen cleaner Toshikazu Ohyama 2012-11-20
7319078 Porous fibrous structure and process for producing the same Hisaharu Kuwahara, Hirokuni Tanii 2008-01-15
6993941 Silver-knit material 2006-02-07
6508897 Porous fibrous structure and process for producing the same Hisaharu Kuwahara, Hirokuni Tanii 2003-01-21
5875526 Female member of a hook-and-loop fastener 1999-03-02