Micro-Energy
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Business history
| 1953 | Commenced the joint development of special stainless alloys with Tohoku University. |
| 1955 | Accomplished the development of special stainless alloys. |
| 1957 | Commenced manufacturing springs for wristwatches. |
| 1968 | Newly built a plant at Nishitaga, Taihaku-ku, Sendai-shi. |
| 1975 | Commenced mass production of button-type microbatteries for wristwatches. |
| 1985 | Formed an equal merger with Tochigi Koseki and changed its name to Seiko Electronic Components Ltd. |
| 1988 | Commenced production of rechargeable button-type microbatteries. |
| 1994 | Changed its name to SII Micro Parts Ltd. |
| 1995 | Released rechargeable button-type microbatteries for cell phone backups. |
| 1995 | Obtained ISO-9001 certification. |
| 1998 | Relocated its main plant to the current address to enhance the production capacity. |
| 1999 | Obtained ISO-14001 certification. |
| 1999 | Announced rechargeable button-type microbatteries for digital camera backups. |
| 2000 | Achieved the monthly shipment of 10 million rechargeable button-type microbatteries/capacitors. |
| 2003 | Achieved the monthly shipment of 20 million rechargeable button-type microbatteries/capacitors. |
| 2005 | Increased capital up to JPY 487.8 million yen for financial strength. |
| 2005 | Accomplished the development of mercury-free silver oxide battery. |
| 2005 | Relocated the sales office to Tokyo. |
| 2005 | Newly built the second building in the headquarters. |
| 2006 | Achieved the monthly shipment of 30 million rechargeable button-type microbatteries/capacitors. |
| 2007 | Formed a merger with Seiko Instruments Inc. and became its Micro-Energy Division. |
| 2008 | Relocated the sales office back to SII Head Office. |
| 2008 | Announced the Chip type Electric Double Layer Capacitor. |
