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

Ken Takeuchi — 6 Patents

KAKao: 5 patents #670 of 3,221Top 25%
AEAmano Enzyme: 1 patents #54 of 118Top 50%
Haga, JP: #2 of 5 inventorsTop 40%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Ken Takeuchi has been granted 6 US patents while listed as an inventor at Kao. The first was granted in 1992 and the most recent in September 2005. Ken Takeuchi ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Ken Takeuchi in Haga, JP.

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
6943004 Transformed microorganism and process for producing D-aminoacylase Yoshinao Koide, Yoshihiko Hirose, Mitsuaki Moriguchi, Kimiyasu Isobe 2005-09-13
5738669 Absorbent article Mikio Suzuki, Masashi Wada 1998-04-14
5466849 Siloxane derivatives, producing method thereof and agents including siloxane derivative Yasushi Shioya, Yuji Suzuki, Koji Yoshino, Akira Kawamata 1995-11-14
5306838 Siloxane derivatives, producing method thereof and agents including siloxane derivative Yasushi Shioya, Yuji Suzuki, Koji Yoshino, Akira Kawamata 1994-04-26
5210251 Ester-modified silicone derivative and a cosmetic composition containing the same Yukihiro Ohashi, Mituo Suda, Koji Yoshino, Akira Kawamata, Yoko Mastui +1 more 1993-05-11
5144054 Siloxane derivatives, producing method thereof and agents including siloxane derivative Yasushi Shioya, Yuji Suzuki, Koji Yoshino, Akira Kawamata 1992-09-01