|1939||Namiki Seisakusho founded in Kamiyacho, Kita-ku, Tokyo. Started production of synthetic sapphire jewel bearings for electrical measuring instruments.|
Company moves to larger production facility at Shinden Adachi-ku, Tokyo.|
During early 1940's the factory is placed under government control, and used primarily to manufacture jewel bearings for aviation instruments and marine radio equipment.
|1946||Namiki resumed manufacturing jewel bearings for electrical measuring instruments.|
|1949||Started production of watch jewel bearings and sapphire phonograph stylus.|
|1953||Namiki Seisakusho was established Namiki Precision Jewel Co. Ltd.|
Adamant Shoji Co., Ltd. was established; watch jewel division split up and partly transferred to Adamant Shoji Co. Ltd.
The origin of the company name
At the time of our company’s founding, our main product was watch jewels that were made of a hard material. As such, the company was named after the word "adamant", meaning "extremely hard". The word is derived from "adamas", which is the root of the Greek word for "diamond". Processing such materials is the key to our core technology.
|Namiki Precision Jewel Co.,Ltd||Adamant Co., Ltd.|
|1957||Adamant Shoji Co., Ltd. was established. Started sales of jewell bearings for watches and clocks.|
|1959||The company changed name to Adamant Kogyo Co., Ltd.|
|1960||Began to manufacture jewel bearings for watches.|
|1962||Developed technology for bonding diamond tips onto metal; Started production of bonded diamond stylus components.|
|1966||Developed crystal glass for watches.|
|1967||Opened Akita Yuzawa Factory.|
|1968||Started production of magnetic tape heads for tape recorders.|
|1969||Started production of super-hard metal watch cases.||Started manufacture and sales of medical equipment parts.|
|1970||Started production of synthetic sapphire watch crystal.|
|1971||Developed and introducted diamond stylus for four-channel records jointly with JVC.
* Started manufacture and sales of telecommunication, electronic and applied equipment parts.
Niigata Factory was completed at Murakami City, Niigata.
|Started manufacture and sales of telecommunication, electronic and applied equipment parts.|
|1972||Started production of rare-earth magnet by selective laser sintering developed.|
|1973||Developed the world's smallest coreless motor with diameter of 10mm.|
|1975||Started production of Box glass for watches.|
|1976||Manufacture and sales of liquid crystal display panels and audio component parts started.|
|1977||Developed tempered glass for watches panes; production.|
|1978||Exhibition in Chicago||Manufacture and sales of optical equipment parts started.|
|1979||Manufacture and sales of ruby capillaries started.|
|1980||Started production of floppy heads.||Manufacture and sales of ferrule started.|
|1981||Manufacture and sales of sleeve started.|
|1982||Opened Aomori Kuroishi Factory.
Started production of Microridge stylus for 4CR.
|Manufacture and sales of optical communication and VTR related parts started.|
|1983||Established NJC Technological Research Institute to
integrate company's R & D forces.
|Manufacture and sales of high performance temperature / humidity sensors and ruby surgical knives started.|
|1984||Started production of Infusion pumps in OEM basis.|
|1985||Started production of vibration motors for pager.||Started manufacture of sales of semi-conductor parts.|
|1987||Started production of hybrid IC's ; Developed garnet crystal.|
|1989||Akita-Adamant Co., Ltd., a subsidiary of Adamant Kogyo Co., Ltd., was established at Yuzawa City, Akita.|
|1990||Manufacture and sales of STN liquid crystal displays started.|
|1991||Opened Namiki America (business division) in New Jersey, USA.
Established manufacturing technology of the synthetic single crystal sapphire.
|1992||Started production of optical isolators.||Manufacture and sales of touch panels started.|
|1993||Opened Namiki Precision (Thailand) Co.,Ltd. (production division) in Chiang Mai, Thailand.||Akita Adamant Co., Ltd. was moved to Yokote City, Akita.|
|1995||Production of the ceramic watch parts.|
|1996||Opened production of lensed fibers for optical communication.|
|1997||Namiki Precision Singapore Pte. Ltd. established.|
|1998||Adamant America, Inc., a subsidary of Adamant Co., Ltd., was established in United States.|
|1999||Opened Namiki Precision of California,Inc.(business and R&D division) in California Inc. USA.
Started production of vibration speaker.
|2000||Started production of sapphire wafers.|
|2001||Namiki Singapore became independent.|
|2003||Adamant established partnership with Micralyne for MEMS products.|
|2004||Developed the world's smallest metallic glass micro-geared motor with diameter of 1.5mm. (Later, Namiki win the 2006 Prime Minister's Prize.|
|2005||Developed production technology of step wafers, with the height of each step being 0.22 nanometers.|
|2006||Developed the world's longest diamond needles.|
|2007||Established precise micro-machining technology with femtosecond laser.|
|2008||Established the gallium nitride, GaN, polishing technology.|
|2009||Developed the world's smallest metallic glass micro-geared motor with diameter of 0.9mm.||Adamant Europe GmbH, a subsidary of Adamant Co., Ltd., was established in Germany.|
|2010||Opened Namiki Precision of Europe SA (business and R&D division)in Lausanne, Switzerland.|
|2014||Developed the World's first plasma fusion chemical mechanical polishing (CMP) processing technology with Kyusyu University and Osaka University.
(Grant-in-Aid for Scientific Research (S)) Number 24226005)
Developed the 0.6mm diameter micro motor.
|The Company Changed name to Adamant Co., Ltd.|
|2015||Developed large diameter diamond.|
|2018||Namiki Precision Jewel Co., Ltd. and Adamant Co., Ltd. are merging and changed name to Adamant Namiki Precision Jewel Co., Ltd.|