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| Mamiya Seiichi in 1951 Image in Asahi Camera (アサヒカメラ) July 1951, p. 88 Scan by rebollo_fr. (Image rights) (Image rights) |
Mamiya Seiichi (間宮精一)[1] (•17 Jan 1899 †6 Jan 1989) was Japanese inventor and camera designer. Together with the investor Tsunejiro Sugawara Mamiya founded the Mamiya Kōki Seisakusho (マミヤ光機製作所, Mamiya Optical Works). Tsunejiro Sugawara beame President of the Company,[2] while Mamiya Seiichi served as 'Chief Engineer' until his retirement in December 1954 and then as adviser.[3]
Camera Designs by Mamiya Seiichi[]
- Mamiya Six (1940)
- Mamiya 16 (1955)
- Mamiyaflex
- Mamiya RB67 (1970)
Patents[]
The following patents were filed by Mamiya Seiichi or under his name.
Japan[]
| Type | Application date |
Application number |
Publication date |
Publication number |
Grant date |
Grant number |
Title | Relates to camera model |
| Utility model (実用新案) |
Jul. 1, 1939 (as a patent) |
S15-17197 (as a U.M.) |
Oct. 5, 1940 | S15-14673 | n.a. | 294734 | 写真機に於ける焦点調整装置 (Focusing control device in a camera) |
Mamiya Six |
| Patent (特許) |
Oct. 11, 1940 | S15-14993 | Aug. 15, 1941 | S16-4067 | n.a. | 146741 | 歯車連動装置に於ける歯隙の影響を解消する装置の改良 (Improvement to a device that cancels the effect of gear play in a gear train device) |
Mamiya Six |
Overseas[]
| Date filed | Date granted | Country | Patent nº | Patent Title | Relates to Camera Model |
| 1929, 17 Apr | 1930, 20 Mar | UK | GB326688 | Improvements In Or Relating To Photographic Cameras.[4] | Never produced |
| ? | 1941, 22 Dec | UK | GB542016 | Improvements In And Relating To Focusing Devices For Portable Photographic Cameras. | Mamiya Six |
| 1940, 5 Jun | 1942, 15 Dec | USA | US2305301 | Focussing Device for Portable Photographic Cameras.[5] | Mamiya Six |
| 1955, 12 May | 1957, 8 Oct | USA | US2808770 | Camera rangefinder[6] | Mamiya Six |
| 1955, 12 May | 1958, 27 May | USA | US2836109A | Film winding and shutter setting mechanism for a camera | Mamiya 16 |
| 1955, 20 Jun | 1958, 24 Jun | USA | US2839976 | Mechanism for setting shutter by film-winding operation in rollfilm camera[7] | Mamiya Six |
| 1966, 20 Jan | 1968, 27 Aug | USA | US3398666A | Camera Focus Adjusting Mechanism | Mamiya RB67 |
Further reading[]
In Japanese:
- Mamiya Seiichi (間宮精一), "Wakaki gijutsusha no tame ni: Kamera gijutsusha no keiken kara" (若き技術者のために・カメラ技術者の経験から, For young engineers: From experienced camera engineers). Asahi Camera (アサヒカメラ) July 1951, pp. 87-89.
Links[]
Notes and References[]
- ↑ The name is given in the Japanese order, with family name followed by the given name.
- ↑ Retired June 1966; † April 1988 (Mamiya. A History of Innovation. Mamiya 50th Anniversary. Produced by the Mamiya-History of Innovation Editorial Committee. Bunkyo-ku, Tokyo: Mamiya Camera Co. Ltd. p. 11).
- ↑ Mamiya. A History of Innovation. Mamiya 50th Anniversary. Produced by the Mamiya-History of Innovation Editorial Committee. Bunkyo-ku, Tokyo: Mamiya Camera Co. Ltd. p. 10
- ↑ While the application was successful, the Patent was never granted as Mamiya Seiichi apparently failed to pay the sealing fee.—Patent data
- ↑ Patent application by Seiichi Mamiya, Ohita, Takata-Gun, Japan.
- ↑ Patent application by Seiichi Mamiya, Bunkyo-Ku, Tokyo-to, Japan.
- ↑ Patent application by Seiichi Mamiya, Bunkyo-Ku, Tokyo-to, Japan.