Inventor
TAKAJO SHIGEAKI
JP22 patents
⚠️ This page may combine multiple inventors who share the name “TAKAJO SHIGEAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KAWASAKI STEEL CO
20 patentsUS5308702AMay 3, 1994
Iron-based powder composition for use in powder metallurgy, process for its production and process for producing iron-base sintered material
KAWASAKI STEEL CO41 citations92
US4964907AOct 23, 1990
Sintered bodies and production process thereof
KAWASAKI STEEL CO32 citations92
US4954171ASep 4, 1990
Composite alloy steel powder and sintered alloy steel
KAWASAKI STEEL CO40 citations92
US5279640AJan 18, 1994
Method of making iron-based powder mixture
KAWASAKI STEEL CO22 citations91
US4971755ANov 20, 1990
Method for preparing powder metallurgical sintered product
KAWASAKI STEEL CO33 citations91
US5135566AAug 4, 1992
Iron base powder mixture and method
KAWASAKI STEEL CO34 citations89
US4946499AAug 7, 1990
Method of preparing iron base powder mixture for pm
KAWASAKI STEEL CO37 citations89
US6322639B1Nov 27, 2001
Magnetic steel sheet having excellent magnetic properties and method of producing the same
KAWASAKI STEEL CO15 citations84
US4985309AJan 15, 1991
Alloyed steel powder for powder metallurgy
KAWASAKI STEEL CO19 citations78
US6248185B1Jun 19, 2001
Electromagnetic steel sheet having excellent magnetic properties and production method thereof
KAWASAKI STEEL CO8 citations74
US4824734AApr 25, 1989
Tin-containing iron base powder and process for making
KAWASAKI STEEL CO6 citations74
US4643765AFeb 17, 1987
Tin-containing ferrous composite powder and method of producing same and tin-containing sintered magnetic material
KAWASAKI STEEL CO14 citations74
US6162306ADec 19, 2000
Electromagnetic steel sheet having excellent high-frequency magnetic properities and method
KAWASAKI STEEL CO4 citations73
US5067979ANov 26, 1991
Sintered bodies and production process thereof
KAWASAKI STEEL CO14 citations73
US5476534ADec 19, 1995
Iron-based powder mixture and method
KAWASAKI STEEL CO14 citations72
US6416592B2Jul 9, 2002
Electromagnetic steel sheet having excellent magnetic properties and production method thereof
KAWASAKI STEEL CO2 citations63
US4561893ADec 31, 1985
Alloy steel powder for high strength sintered parts
KAWASAKI STEEL CO5 citations63
US6322638B1Nov 27, 2001
Electromagnetic steel sheet having excellent high-frequency magnetic properties
KAWASAKI STEEL CO1 citations62
US6207103B1Mar 27, 2001
Fe-Cr-Si steel sheets having excellent corrosion resistance and method for manufacturing the same
KAWASAKI STEEL CO3 citations62
US4804409AFeb 14, 1989
Alloy steel powder for powder metallurgy
KAWASAKI STEEL CO3 citations62