Inventor · disambiguated record
Masakuni Ezumi
Also filed as: EZUMI MASAKUNI
62 granted patents·11 pending applications·1,952 citations·filing 1998–2006
99Inventor score
Top patents by PatentIndex Score
73 records- 0198US7036707B2Friction stir welding method, frame members used therein, and product formed therebyHITACHI LTD·Filed 2003·Granted May 2, 2006·76 cites·20 claims
- 0298US6193137B1Constructive body and friction stir welding methodHITACHI LTD·Filed 1998·Granted Feb 27, 2001·145 cites·11 claims
- 0397US6536651B2Friction stir welding methodHITACHI LTD·Filed 2001·Granted Mar 25, 2003·104 cites·5 claims
- 0497US6494011B2Hollow extruded frame member for friction stir weldingHITACHI LTD·Filed 2001·Granted Dec 17, 2002·33 cites·28 claims
- 0597US6311889B1Manufacturing method of a structure body and a manufacturing apparatus of a structure bodyHITACHI LTD·Filed 2000·Granted Nov 6, 2001·61 cites·15 claims
- 0697US6299050B1Friction stir welding apparatus and methodHITACHI LTD·Filed 2000·Granted Oct 9, 2001·127 cites·12 claims
- 0797US6050474AFriction stir welding method, frame members used therein, and product formed therebyHITACHI LTD·Filed 1998·Granted Apr 18, 2000·222 cites·15 claims
- 0896US6419144B2Method of forming structural body using friction stir welding, and structural body formedHITACHI LTD·Filed 2001·Granted Jul 16, 2002·32 cites·9 claims
- 0996US6305866B1Structure joined by friction stir weldingHITACHI LTD·Filed 2000·Granted Oct 23, 2001·60 cites·19 claims
- 1096US6237829B1Friction stir welding apparatusHITACHI LTD·Filed 2000·Granted May 29, 2001·59 cites·15 claims
- 1195US6273323B1Manufacturing method of a structural bodyHITACHI LTD·Filed 2000·Granted Aug 14, 2001·59 cites·7 claims
- 1294US6619534B2Friction stir welding method using members which overlap and have protrusion at the weld location prior to the weldingHITACHI LTD·Filed 2002·Granted Sep 16, 2003·22 cites·4 claims
- 1394US6382498B2Friction stir welding method including positioning of rotary tool, and structural body formed therebyHITACHI LTD·Filed 2001·Granted May 7, 2002·37 cites·2 claims
- 1493US6378754B2Friction stir welding method including removal of protruding portion, and structural body formed therebyHITACHI LTD·Filed 2001·Granted Apr 30, 2002·32 cites·16 claims
- 1593US6250037B1Structure body and hollow shape extruded frame memberHITACHI LTD·Filed 1999·Granted Jun 26, 2001·77 cites·13 claims
- 1691US6471112B2Friction stir welding methodHITACHI LTD·Filed 2001·Granted Oct 29, 2002·36 cites·4 claims
- 1790US6422449B1Method of mending a friction stir welding portionHITACHI LTD·Filed 2000·Granted Jul 23, 2002·46 cites·29 claims
- 1890US6315187B1Friction stir welding methodHITACHI LTD·Filed 1999·Granted Nov 13, 2001·51 cites·8 claims
- 1989US6585443B2Structural body formed by friction stir welding two members, one of which has a protruding portionHITACHI LTD·Filed 2001·Granted Jul 1, 2003·22 cites·8 claims
- 2089US6378264B1Structure body and method of manufacture thereofHITACHI LTD·Filed 2000·Granted Apr 30, 2002·42 cites·30 claims
- 2188US6527470B2Structural body and friction stir welding methodHITACHI LTD·Filed 2001·Granted Mar 4, 2003·29 cites·10 claims
- 2287US6530513B2Friction stir welding method, and method for manufacturing car bodyHITACHI LTD·Filed 2001·Granted Mar 11, 2003·23 cites·14 claims
- 2387US6474533B1Friction stir welding methodHITACHI LTD·Filed 2000·Granted Nov 5, 2002·35 cites·10 claims
- 2487US6321975B1Manufacturing method of a structure bodyHITACHI LTD·Filed 2000·Granted Nov 27, 2001·36 cites·19 claims
- 2586US6290117B1Friction stir welding method and friction stir welding apparatusHITACHI LTD·Filed 1999·Granted Sep 18, 2001·57 cites·6 claims
- 2685US6936332B2Extruded frame member for use in friction stir weldingHITACHI LTD·Filed 2001·Granted Aug 30, 2005·17 cites·32 claims
- 2785US6354483B1Friction stir welding methodHITACHI LTD·Filed 2000·Granted Mar 12, 2002·31 cites·8 claims
- 2884US6613447B2Structural body formed by friction stir welding and having protrusion at the weld provided prior to the weldingFiled 2002·Granted Sep 2, 2003·10 cites·14 claims
- 2984US6607837B2Structural body formed by friction stir welding methodHITACHI LTD·Filed 2002·Granted Aug 19, 2003·15 cites·6 claims
- 3084US6595403B2Friction stir welding methodHITACHI LTD·Filed 2001·Granted Jul 22, 2003·27 cites·3 claims
- 3183US6325274B2Method of manufacture of a structural bodyHITACHI LTD·Filed 2001·Granted Dec 4, 2001·20 cites·3 claims
- 3282US6502739B2Method of manufacture of a structural bodyHITACHI LTD·Filed 2001·Granted Jan 7, 2003·18 cites·3 claims
- 3380US6719184B2Nondestructive inspection methodHITACHI LTD·Filed 2002·Granted Apr 13, 2004·25 cites·16 claims
- 3480US6640515B1Frame member used in friction stir weldingHITACHI LTD·Filed 2000·Granted Nov 4, 2003·12 cites·20 claims
- 3580US6513698B2Method of manufacture of a structural bodyHITACHI LTD·Filed 2001·Granted Feb 4, 2003·16 cites·2 claims
- 3679US6733900B2Car body formed by friction stir weldingHITACHI LTD·Filed 2002·Granted May 11, 2004·15 cites·3 claims
- 3779US6532712B2Structural body and method of manufacture thereofHITACHI LTD·Filed 2002·Granted Mar 18, 2003·19 cites·13 claims
- 3878US6691484B2Hollow extruded frame member for friction stir welding and structure body formed therefromHITACHI LTD·Filed 2002·Granted Feb 17, 2004·16 cites·10 claims
- 3977US6777107B2Structural body formed by friction stir weldingHITACHI LTD·Filed 2002·Granted Aug 17, 2004·13 cites·4 claims
- 4077US6557746B2Friction stir bonding methodHITACHI LTD·Filed 2001·Granted May 6, 2003·17 cites·11 claims
- 4176US6722286B2Structure and railway carHITACHI LTD·Filed 2002·Granted Apr 20, 2004·18 cites·4 claims
- 4275US6722555B2Friction stir welding methodHITACHI LTD·Filed 2001·Granted Apr 20, 2004·14 cites·10 claims
- 4374US6793117B2Friction stir welding method, and hollow shape member for friction stir weldingHITACHI LTD·Filed 2002·Granted Sep 21, 2004·13 cites·26 claims
- 4472US6582831B2Friction stir welded body and frame member thereforHITACHI LTD·Filed 2001·Granted Jun 24, 2003·14 cites·9 claims
- 4569US6659330B2Friction stir welding method, and method for manufacturing car bodyHITACHI LTD·Filed 2002·Granted Dec 9, 2003·8 cites·25 claims
- 4665US6783055B2Friction stir welding method and rotary toolHITACHI LTD·Filed 2002·Granted Aug 31, 2004·10 cites·25 claims
- 4765US6745929B1Method of manufacturing structural body and structural bodyHITACHI LTD·Filed 1998·Granted Jun 8, 2004·23 cites·3 claims
- 4865US6705508B2Friction stir welding method, and method for manufacturing car bodyHITACHI LTD·Filed 2002·Granted Mar 16, 2004·6 cites·15 claims
- 4964US6786388B2Friction stir welding methodHITACHI LTD·Filed 2003·Granted Sep 7, 2004·8 cites·9 claims
- 5063US6997369B2Friction stir welding methodHITACHI LTD·Filed 2004·Granted Feb 14, 2006·11 cites·3 claims
Showing the top 50 of 73 patent records by PatentIndex Score.
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