OI

Osamu Inagoya

HM Hitachi Maxell: 7 patents #125 of 1,211Top 15%
HI Hitachi: 2 patents #13,388 of 28,497Top 50%
📍 Ibaraki, JP: #1,290 of 6,779 inventorsTop 20%
Overall (All Time): #670,690 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
5057955 Composite magnetic head Takeshi Tottori, Kazunari Nakagawa, Hirosuke Mikami, Hideo Fujiwara 1991-10-15
4941064 Magnetic head having a pair of cores in which the opposing surfaces thereof are coated with a non-magnetic layer and a low melting point glass layer Takeshi Tottori, Hideo Fujiwara 1990-07-10
4928382 Method of the production of a magnetic head Hideo Fujiwara, Takeshi Tottori, Hirosuke Mikami 1990-05-29
4870523 Magnetic head apparatus used for movable magnetic medium with head gap positioning Hideo Fujiwara, Yoshito Tanaka, Takeshi Ohnuki 1989-09-26
4866555 Magnetic head Hideo Fujiwara 1989-09-12
4803578 Assembly for stably mounting magnetic head on carriage Hideo Fujiwara, Akito Sakemoto 1989-02-07
4745507 Composite type magnetic head with non-magnetic member in coil mounting portion Shigekazu Otomo, Noriyuki Kumasaka, Takeo Yamashita, Juichi Morikawa, Hideo Fujiwara +2 more 1988-05-17
4701819 Magnetic head to effect high density magnetic recording Hideo Fujiwara, Takeshi Tottori, Minoru Yamano, Noriyuki Kumasaka, Shigekazu Otomo +5 more 1987-10-20