Yoshimura Company

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B21K MAKING FORGED OR PRESSED PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS, WHEELS 914
 
  
 
F01L CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES 550
 
  
 
B23P OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 452
 
  
 
B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING 254
 
  
 
B23K SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 291
 
  
 
B21C MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL120

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9447711 Method for production of valve head portion of hollow engine valve and hollow engine valveJul 31, 13Sep 20, 16[B23P, B21K, F01L, B23K, B21D]
9427795 Method for producing a hollow engine valveJan 21, 13Aug 30, 16[B23P, B21K, F01L]
9302317 Method for manufacturing hollow engine valveFeb 17, 12Apr 05, 16[B23P, B21K, F01L]
9194263 Method for production of valve head portion of hollow engine valve and hollow engine valveJul 31, 13Nov 24, 15[B23P, B21K, F01L, B23K, B21D]
8881391 Method for producing hollow engine valveSep 24, 10Nov 11, 14[B23P, B21K, F01L, B21C]
8713793 Method for producing metallic-sodium-filled engine valveSep 09, 10May 06, 14[B21K]
8650752 Method for manufacturing valve umbrella portion of hollow engine valve, press device of valve umbrella portion of hollow engine valve, and hollow engine valveJul 15, 10Feb 18, 14[B21K]
8522434 Method for production of valve head portion of hollow engine valve and hollow engine valveSep 17, 09Sep 03, 13[B21K]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8561297 Method for producing engine valve in which sodium metal is sealedExpiredMay 02, 11Oct 22, 13[B21K]
2012/0304,464 METHOD FOR MANUFACTURING HOLLOW ENGINE VALVEAbandonedOct 06, 10Dec 06, 12[B21K]
2012/0246,936 METHOD FOR PRODUCING METALLIC-SODIUM-FILLED ENGINE VALVEAbandonedOct 14, 10Oct 04, 12[B21K]

Top Inventors for This Owner

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