501 Hitachi Metals, Ltd.

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 1135
 
 
 
H02K DYNAMO-ELECTRIC MACHINES 1102

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5122703 Integrally molded armature for swing-type actuatorJul 11, 91Jun 16, 92[G11B, H02K]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5505033 Column base structure and connection arrangementExpiredApr 19, 91Apr 09, 96[F02D]
5100612 Spheroidal graphite cast ironExpiredJun 19, 90Mar 31, 92[C22B]
5096763 Magnet article for attracting foreign matters in the stomachExpiredFeb 05, 91Mar 17, 92[A61N, A61B]
5096863 Diffusion-bonded assembly of AlN ceramic bodies and heat dissipation member constituted therebyExpiredJun 05, 91Mar 17, 92[C04B]
4958422 Wear-resistant compound rollExpiredNov 22, 88Sep 25, 90[B21B]

Top Inventors for This Owner

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