MI

Masami Iwama

Ricoh Company: 8 patents #2,692 of 9,818Top 30%
HC Hitachi Koki Co.: 3 patents #334 of 888Top 40%
📍 Ibaraki, JP: #949 of 6,779 inventorsTop 15%
Overall (All Time): #437,140 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
12330419 Liquid discharge head and image forming apparatus Shiomi Andoh 2025-06-17
11077688 Liquid discharge head and liquid discharge apparatus Shiomi Andou, Satoru Yoshida 2021-08-03
10576742 Liquid discharge head and liquid discharge apparatus Takakazu Kihira, Tomoaki Murakami, Kouichi Nakano 2020-03-03
10179452 Liquid discharge head, liquid discharge device, and liquid discharge apparatus Yukio Otome, Takahiro Yoshida, Takakazu Kihira, Takayuki Nakai, Shiomi Andou +6 more 2019-01-15
10076918 Liquid-discharging head, liquid-discharging unit, and apparatus configured to discharge liquid Tomoaki Murakami, Takahiro Yoshida, Takakazu Kihira 2018-09-18
8974026 Liquid droplet ejection head, control device, control method, and manufacturing method of the same, and recording medium of the same methods 2015-03-10
8931871 Driving device of liquid-jet head, liquid-jet device and method for driving liquid-jet head 2015-01-13
8366242 Liquid-ejection head unit and image forming apparatus Tomohiko Koda, Kenichi Yoshimura, Tomiyoshi Takano, Mitsuru Kawakami 2013-02-05
6109802 Dot line printer for preventing the overheating of printing elements by selectively activating the printing elements Toshiyuki Suzuki 2000-08-29
5826990 Method and device for limiting a number of times each print hammer is driven during a predetermined period of time Toshiyuki Suzuki, Kohichi Yageta, Mitsuru Kawakami 1998-10-27
5662421 Print speed controlled dot line printer depending on print density Kiyohito Hagiwara, Yoshikane Matsumoto, Shingo Nakahara 1997-09-02