YT

Yayoi Tazawa

Canon: 6 patents #8,497 of 19,416Top 45%
📍 Mishima, JP: #259 of 754 inventorsTop 35%
Overall (All Time): #865,778 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
7943281 Black toner Takaaki Kaya, Yasukazu Ayaki, Shigeto Tamura, Ryoichi Fujita, Yuichi Yajima 2011-05-17
7049039 Coloring agent for toner, and toner Yasukazu Ayaki 2006-05-23
6808855 Process for producing toner Yasukazu Ayaki, Hitoshi Itabashi 2004-10-26
6566028 Toner, and process for producing toner Takeshi Ikeda, Yoshinobu Baba, Hitoshi Itabashi, Yuzo Tokunaga, Yasukazu Ayaki 2003-05-20
6358658 Toner, and process for producing toner Takeshi Ikeda, Yoshinobu Baba, Hitoshi Itabashi, Yuzo Tokunaga, Yasukazu Ayaki 2002-03-19
6106990 Process for producing toner particles Yoshinobu Baba, Hitoshi Itabashi, Yuzo Tokunaga, Yasukazu Ayaki 2000-08-22