HS

Hiroshi Sasaki

HI Hitachi: 4 patents #64 of 2,935Top 3%
HC Hitachi Engineering Co.: 1 patents #9 of 44Top 25%
MC Mitsubishi Mining & Cement Co.: 1 patents #7 of 25Top 30%
📍 Yokohama, JP: #10 of 146 inventorsTop 7%
Overall (1989): #1,729 of 140,708Top 2%
6
Patents 1989

Issued Patents 1989

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
4862440 Optical head with optical beam control using acoustic wave device Norifumi Miyamoto, Yoshio Sato, Nobuyoshi Tsuboi, Satoshi Shimada, Hiroaki Koyanagi +1 more 1989-08-29
4841514 Optical recording method and apparatus using two fight spots Nobuyoshi Tsuboi, Atsumi Watanabe, Yoshio Sato, Satoshi Shimada 1989-06-20
4837995 Anchoring device for a tension member of prestressed concrete Hitoshi Omizono, Yasuo Fukatsu, Saburo Ota, Yoshio Ueda 1989-06-13
4831942 Method of controlling deactivation of denitrating catalyst Iwao Morimoto 1989-05-23
4811328 Optical recording and reproducing device Tetsuo Ito, Yoshio Sato, Satoshi Shimada, Norifumi Miyamoto, Nobuyoshi Tsuboi +2 more 1989-03-07
4806277 Decontaminating solid surfaces Mikio Sakurai, Tsutomu Hayashi, Masayuki Izumi, Thoru Satho, Kazuo Owada 1989-02-21