Mamiya Seiichi

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Seiichi Mamiya in 1951
Image in Asahi Camera (アサヒカメラ) July 1951, p. 88
Image by rebollo_fr. (Image rights) (Image rights)

Seiichi Mamiya (間宮精一) (•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,[1] while Seiichi Mamiya served as 'Chief Engineer' until his retirement in December 1954 and then as adviser.[2]

Camera Designs by Seiichi Mamiya

Patents

The following patents are filed by him or under his name:

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.[3] Never produced
1939, 1 Jul 1940, 5 Oct Japan 294734 NEED JAPANESE AND ENGLISH TITLE[4] Mamiya Six
? 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
1940, 11 Oct 1941, 15, Aug Japan 146741 NEED JAPANESE AND ENGLISH TITLE[6] Mamiya Six
1955, 12 May 1957, 8 Oct USA US2808770 Camera rangefinder[7] 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[8] 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

  1. ↑ 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).
  2. ↑ 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
  3. ↑ While the application was successful, the Patent was never granted as Mamiya Seiichi apparently failed to pay the sealing fee.—Patent data
  4. ↑ Japanese utility model publication (実用新案出現広告) no.S15-14673 of utility model (実用新案) no.294734, applied for (出現) on Jul. 1, 1939 and published (公告) on Oct. 5, 1940
  5. ↑ Patent application by Seiichi Mamiya, Ohita, Takata-Gun, Japan.
  6. ↑ Japanese patent publication (特許出現広告) no.S16-4067 of patent (特許) no.146741
  7. ↑ Patent application by Seiichi Mamiya, Bunkyo-Ku, Tokyo-to, Japan.
  8. ↑ Patent application by Seiichi Mamiya, Bunkyo-Ku, Tokyo-to, Japan.
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