TOHO ZINC CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 1153

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7862931 Lead-based alloy for lead-acid battery, substrate for lead-acid battery and lead-acid batteryJan 08, 04Jan 04, 11[H01M]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2011/0115,599 WINDING INDUCTOR AND PROCESS FOR MANUFACTURING THE SAMEAbandonedApr 25, 08May 19, 11[H01F]
2011/0024,670 COMPOSITE MAGNETIC MATERIAL AND METHOD OF MANUFACTURING THE SAMEAbandonedOct 13, 10Feb 03, 11[B22F, H01F]
2011/0024,671 METHOD OF PRODUCING COMPOSITE MAGNETIC MATERIAL AND COMPOSITE MAGNETIC MATERIALAbandonedOct 13, 10Feb 03, 11[H01F]
4870729 Method of making a noise filterExpiredSep 06, 88Oct 03, 89[H01G]
4866407 Noise filter and method of making the sameExpiredJul 13, 88Sep 12, 89[H03H]
4847575 Noise filter having multiple layers rolled into an elliptical shapeExpiredJan 06, 88Jul 11, 89[H03H]
4563658 Noise filterExpiredMay 17, 84Jan 07, 86[H03H]
4526611 Process for producing superfines of metalExpiredMar 05, 84Jul 02, 85[B22F]
4371440 Method of treating a waste water rich in proteinExpiredSep 23, 81Feb 01, 83[C02F]
4183807 Treatment of waste water rich in nutrientsExpiredSep 11, 78Jan 15, 80[C02C]

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