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| 1963 - April |
Established Yashima Electric Manufactory as a private enterprise.
Started manufacturing magnetic earphones for television and radio. |
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| 1963 - June |
Reorganized to Yashima Electric Co., Ltd. |
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| 1981 |
Developed and started manufacturing earphones for hearing aid. |
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| 1982 |
Developed and started manufacturing innerphones (intraconcha type). |
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| 1984 |
Developed and started manufacturing innerphones for card type radio. |
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| 1984 |
Various companies started manufacturing card type radios, and most of innerphones used for them have become Yashima's. |
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| 1988 |
Developed and started manufacturing innerphones to meet sound composite. |
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| 1989 |
Sale of earphone as a single article expanded in audio accessories market.
Researched in measuring actual frequency characteristics perceivable in use of innerphone, to comply with a request from NTT Communication Laboratory, with trial producing of the required frequency characteristics at the measurement followed. |
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| 1990 |
Exhibited the earphone-microphone for mobile phone at Consumer Electronics Show in Las Vegas, U.S.A.
Started shipping the earphone-microphone to North America. |
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| 1992 |
Developed and started manufacturing earphone-microphone to have the characteristics of the microphone specified for the telephone. |
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| 1994 |
Developed and started manufacturing earphone-microphone for mobile phone, which has integrated both earphone and microphone into one unit. |
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| 1998 |
Developed a hands-free system (automatic on-hook/off-hook) for vehicles for the first in Japan, and started its manufacturing for OEM business. |
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| 2001 |
Started manufacturing business-use headsets for broadcasting stations.
Opened Shanghai office in China. |
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| 2002 |
Developed and started manufacturing throat microphones for use under big noise environment like aircraft maintenance, disaster prevention apparatus. |
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| 2003 |
Entered Cyber Assist Consortium of Industrial General Laboratory. |
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| 2005 |
Conducted no-power terminal equipment sound design and manufactured sound system products for Global House at Aichi World Fair in Japan. |
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| 2005 |
Developed and started manufacturing HM-01 microphone which is not badly affected by a cutting wind noise. |
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| 2007 |
Developed and started sales activity of one magnetic pole type balanced armature hi-fi earphone.
Began manufacturing a Hi-Fi earphone with this structure first in the world. |
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| 2008 |
N20 (Rev. 3): Lowered an impedance for lower frequency in sound system at Model #N20-3. |
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| 2010 |
N20 (Rev. 4): Lowered an impedance for lower frequency in sound system at Model #N20-4 with a different structure from #N20-3. |
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| 2011 |
Closed Shanghai office. |
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| 2011 |
Started supplying a headset for a broadcasting station, with a shock noise (cable touch noise, etc.) much reduced. |
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| 2013 |
Celebrated 50th anniversary of the company foundation. |
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| 2013 |
Developed one magnetic pole type balanced armature Hi-Fi earphone in φ6.5 although a smaller size than φ10 product had been assumed not possible. |
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| 2014 |
Started sales activity of Wind noise cancelling microphone(HM-01) as Yashima original product. |
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| 2014 |
Manufactured and started sales activity of High performance earphone ME-148 and ME-150 as Yashima original product. |
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| 2015 |
Started sales activity of modified Higher quality N20 driver(product name: Extreme Magnetic Driver). |
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| 2015 |
Granted [Sainokuni Factory] certification. |
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| 2017 |
Developed and started manufacturing High conversion efficiency bone conduction earphone. |
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| 2018 |
Developed and started manufacturing Micro vibration pick up sensor. |
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| 2019 |
Developed Professional under water call device.
Developed Non-contact connector(Plug and Jack). |
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