HM

Hiroshi Matsumaru

HI Hitachi: 5 patents #7,555 of 28,497Top 30%
📍 Hitachinaka, JP: #850 of 2,447 inventorsTop 35%
Overall (All Time): #1,060,856 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
5042620 Elevator control system Kenzi Yoneda, Yoshio Sakai, Toshimitsu Tobita, Seiji Yasunobu 1991-08-27
4995479 Display guide apparatus of elevator and its display method Michio Fujiwara, Yasushi Kobayashi, Yoshio Sakai, Kenzi Yoneda, Osamu Dohi +1 more 1991-02-26
RE32887 Message communication method and system Kinji Mori, Makoto Nohmi, Shoji Miyamoto, Hirokazu Ihara, Katuaki Ikeda 1989-03-14
4510492 Message communication method and system Kinji Mori, Makoto Nohmi, Shoji Miyamoto, Hirokazu Ihara, Katuaki Ikeda 1985-04-09
4380061 Loop transmission system with improved bypass routing arrangement Kinji Mori, Hirokazu Ihara 1983-04-12