Inventor · disambiguated record
Keiji Yamada
Also filed as: YAMADA KEIJI
23 granted patents·7 pending applications·291 citations·filing 1992–2022
95Inventor score
Top patents by PatentIndex Score
30 records- 0184US10446427B2Conveyance system and conveyance methodMURATA MACHINERY LTD·Filed 2016·Granted Oct 15, 2019·4 cites·7 claims
- 0283US5992560AMuffler for internal combustion engineIBIDEN CO LTD·Filed 1996·Granted Nov 30, 1999·60 cites·6 claims
- 0382US6697536B1Document image scanning apparatus and method thereofNEC CORP·Filed 2000·Granted Feb 24, 2004·54 cites·9 claims
- 0481US10354902B2Conveyance systemMURATA MACHINERY LTD·Filed 2016·Granted Jul 16, 2019·3 cites·8 claims
- 0569US8359908B2Surface texture measuring deviceMITUTOYO CORP·Filed 2010·Granted Jan 29, 2013·4 cites·5 claims
- 0669US7199859B2Exposure equipment and control method of the sameFUJITSU LTD·Filed 2005·Granted Apr 3, 2007·3 cites·13 claims
- 0767US6327384B1Character recognition apparatus and method for recognizing charactersNEC CORP·Filed 1997·Granted Dec 4, 2001·76 cites·8 claims
- 0866US7629092B2Exposure system, exposure method and semiconductor device manufacturing methodFUJITSU MICROELECTRONICS LTD·Filed 2005·Granted Dec 8, 2009·2 cites·11 claims
- 0966US5232973AHigh-temperature gasketTOYOTA MOTOR CO LTD·Filed 1992·Granted Aug 3, 1993·19 cites·7 claims
- 1062USD1013539SHeight gaugeMITUTOYO CORP·Filed 2022·Granted Feb 6, 2024·2 cites·1 claims
- 1153US2008312071A1Holding and sealing material for catalytic converter and method of manufacturing the holding seal materialIBIDEN CO LTD·Filed 2007·Application pending·0 cites
- 1251US5444257AElectron-beam exposure system for reduced distortion of electron beam spotFUJITSU LTD·Filed 1994·Granted Aug 22, 1995·8 cites·5 claims
- 1348US5631113AElectron-beam exposure system for reduced distortion of electron beam spotFUJITSU LTD·Filed 1995·Granted May 20, 1997·7 cites·6 claims
- 1447US6122402APattern encoding and decoding method and encoder and decoder using the methodNEC CORP·Filed 1997·Granted Sep 19, 2000·13 cites·7 claims
- 1543US2006073970A1Honeycomb structure bodyIBIDEN CO LTD·Filed 2004·Application pending·0 cites
- 1643US2006269722A1Honeycomb structured bodyYAMADA KEIJI·Filed 2005·Application pending·0 cites
- 1742US5958141ADry etching deviceSANYO VACUUM IND CO LTD·Filed 1997·Granted Sep 28, 1999·12 cites·20 claims
- 1841US6834121B2Apparatus for rough classification of words, method for rough classification of words, and record medium recording a control program thereofNEC CORP·Filed 2000·Granted Dec 21, 2004·5 cites·35 claims
- 1941US2004052694A1Holding seal material for catalytic converter and method of manufacturing the holding and seal materialFiled 2001·Application pending·0 cites
- 2041US2005180898A1Honeycomb filter for clarification of exhaust gasFiled 2003·Application pending·0 cites
- 2140US6083365AMethod for forming a thin film and apparatus for the sameSANYO VACUUM IND CO LTD·Filed 1999·Granted Jul 4, 2000·8 cites·3 claims
- 2240US2005153099A1Honeycomb filter for clarifying exhaust gasesIBIDEN CO LTD·Filed 2003·Application pending·0 cites
- 2339USD1012740SHeight gaugeMITUTOYO CORP·Filed 2022·Granted Jan 30, 2024·0 cites·1 claims
- 2439USD686095SDigital display device for surface-roughness measuring instrumentsMATSUMIYA SADAYUKI·Filed 2012·Granted Jul 16, 2013·3 cites·1 claims
- 2539US2010025060A1Silicon lump crushing toolYAMANE YASUO·Filed 2007·Application pending·0 cites
- 2632USD1034254SDigital display for height gaugeMITUTOYO CORP·Filed 2022·Granted Jul 9, 2024·0 cites·1 claims
- 2732USD1026692SOperation device with displayMITUTOYO CORP·Filed 2022·Granted May 14, 2024·0 cites·1 claims
- 2832USD686096SDigital display device for surface-roughness measuring instrumentsMATSUMIYA SADAYUKI·Filed 2012·Granted Jul 16, 2013·1 cites·1 claims
- 2931US5943440AMethod for segmenting joined character patterns for use in a character recognition systemNEC CORP·Filed 1996·Granted Aug 24, 1999·5 cites·15 claims
- 3024US6090457AProcess of making a thin filmSANYO VACCUM IND CO LTD·Filed 1998·Granted Jul 18, 2000·2 cites·3 claims
Join the waitlist — get patent alerts
Get an alert when Keiji Yamada 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 →