Inventor · disambiguated record
Koichi Yajima
Also filed as: YAJIMA KOICHI
23 granted patents·4 pending applications·548 citations·filing 1988–2020
96Inventor score
Top patents by PatentIndex Score
27 records- 0195US9980032B2Earphone device and sound-reproducing system using the sameFOSTER ELECTRIC CO LTD·Filed 2016·Granted May 22, 2018·17 cites·4 claims
- 0295US5049208APermanent magnetsTDK CORP·Filed 1988·Granted Sep 17, 1991·79 cites·19 claims
- 0394US5022939APermanent magnetsTDK CORP·Filed 1989·Granted Jun 11, 1991·62 cites·22 claims
- 0491US5595608APreparation of permanent magnetTDK CORP·Filed 1994·Granted Jan 21, 1997·77 cites·38 claims
- 0589US5154978AHighly corrosion-resistant rare-earth-iron magnetsTDK CORP·Filed 1990·Granted Oct 13, 1992·74 cites·12 claims
- 0686US6837776B2Flat-object holder and method of using the sameFUJITSU LTD·Filed 2002·Granted Jan 4, 2005·35 cites·10 claims
- 0782US7175453B2Rotating connectorALPS ELECTRIC CO LTD·Filed 2005·Granted Feb 13, 2007·21 cites·41 claims
- 0879US6852608B2Production method for semiconductor chipDISCO CORP·Filed 2002·Granted Feb 8, 2005·25 cites·15 claims
- 0978US10211009B2Switch-containing cableFOSTER ELECTRIC CO LTD·Filed 2016·Granted Feb 19, 2019·4 cites·4 claims
- 1078US5431747AMaster alloy for magnet production and a permanent alloyTDK CORP·Filed 1993·Granted Jul 11, 1995·34 cites·17 claims
- 1176US6939741B2IC chip manufacturing methodDISCO CORP·Filed 2003·Granted Sep 6, 2005·22 cites·6 claims
- 1272US7335578B2Method for manufacturing semiconductor chipSEKISUI CHEMICAL CO LTD·Filed 2003·Granted Feb 26, 2008·17 cites·16 claims
- 1372US6927416B2Wafer support plateDISCO CORP·Filed 2003·Granted Aug 9, 2005·14 cites·16 claims
- 1468US6045629AAlloy used for production of a rare-earth magnet and method for producing the sameSHOWA DENKO KK·Filed 1998·Granted Apr 4, 2000·21 cites·18 claims
- 1565US7172950B2Method for manufacturing semiconductor chipDISCO CORP·Filed 2004·Granted Feb 6, 2007·12 cites·16 claims
- 1653US5948179AAlloy used for production of a rare-earth magnet and method for producing the sameSHOWA DENKO KK·Filed 1997·Granted Sep 7, 1999·12 cites·2 claims
- 1750USD761233SEarphoneFOSTER ELECTRIC CO LTD·Filed 2015·Granted Jul 12, 2016·6 cites·1 claims
- 1847US12027330B2Rotation angle detection sensorNIPPON ALEPH·Filed 2020·Granted Jul 2, 2024·0 cites·5 claims
- 1947US6982211B2Water jet processing methodDISCO CORP·Filed 2004·Granted Jan 3, 2006·2 cites·6 claims
- 2045US5181973ASintered permanent magnetTDK CORP·Filed 1991·Granted Jan 26, 1993·8 cites·2 claims
- 2143US2005085171A1Flat-object holder and method of using the sameFiled 2004·Application pending·0 cites
- 2240US12014887B2Push switchNIPPON ALEPH·Filed 2020·Granted Jun 18, 2024·0 cites·12 claims
- 2340US11972916B2Fall detection sensorNIPPON ALEPH·Filed 2020·Granted Apr 30, 2024·0 cites·5 claims
- 2440US6328825B1Alloy used for production of a rare-earth magnet and method for producing the sameSHOWA DENKO KK·Filed 1999·Granted Dec 11, 2001·6 cites·10 claims
- 2540US2009158585A1Method of manufacturing lead block for rotary connectorYAJIMA KOICHI·Filed 2008·Application pending·0 cites
- 2639US2022356895A1Fixing componentNIPPON ALEPH·Filed 2020·Application pending·0 cites
- 2738US2004097053A1Semiconductor wafer protective member and semiconductor wafer grinding methodYAJIMA KOICHI·Filed 2003·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Koichi Yajima files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →