Tohoku Steel Co., Ltd.

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C22C ALLOYS 270
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING271
 
  
 
C22F CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS 136
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 183
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 1361

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0300,998 METHOD FOR PRODUCING MAGNETOSTRICTIVE MATERIALDec 05, 14Oct 13, 16[H01L, C22F, C22C]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6394415 Fluid control valve and fluid supply/exhaust systemJul 27, 00May 28, 02[F16K]
6193212 Fluid control valve and fluid supply/exhaust systemJul 23, 99Feb 27, 01[F16K, H01F]
5753179 Steels for exhaust valves having improved fatigue strength at high temperature, corrosion resistance at room and higher temperatures and oxidation resistanceSep 20, 96May 19, 98[C22C]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2008/0124,240 Free cutting alloyAbandonedOct 19, 07May 29, 08[C22C]
2003/0192,626 Precipitation-hardened soft magnetic ferritic stainless steelsAbandonedAug 28, 02Oct 16, 03[C22C]
4835069 Magnetic recording mediumExpiredAug 03, 84May 30, 89[G11B]
4833044 Film type magnetic recording mediumExpiredMay 29, 84May 23, 89[G11B]
4567116 Magnetic recording mediumExpiredJul 27, 84Jan 28, 86[G11B]

Top Inventors for This Owner

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