Vital Kogyo Kabushiki Kaisha

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
B66D CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS 615

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6578824 Overload-preventing device for winchApr 23, 01Jun 17, 03[B66D]
6517054 Lever hoist with overload preventing deviceApr 23, 01Feb 11, 03[B66D]
6352243 Chain hoist with overload prevent deviceMay 03, 00Mar 05, 02[B66D]
D407175 Lever blockJun 25, 97Mar 23, 99[1205]
5769398 Lever hoistMay 12, 97Jun 23, 98[B66D]
5238226 Lever operated hoistNov 14, 91Aug 24, 93[B66D]
5088694 Lever type hoistMar 19, 91Feb 18, 92[B66D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6059267 Lever hoistExpiredDec 09, 98May 09, 00[B66D]
5535988 Lever type hoist having reverse rotation preventive mechanismExpiredJan 27, 94Jul 16, 96[B66D]
5156377 Lever-operated hoistExpiredNov 20, 90Oct 20, 92[B66D]
5149058 Lever-operated hoistExpiredNov 20, 90Sep 22, 92[B66D]
5125629 Hand-operated chain blockExpiredAug 29, 90Jun 30, 92[B66D]
5007617 Hand-operated chain blockExpiredAug 03, 89Apr 16, 91[B66D]
4948098 Chain hoistExpiredFeb 07, 90Aug 14, 90[F16G]
4881720 Hand operated chain blockExpiredAug 24, 88Nov 21, 89[B66D]
4819913 Lever type hoisting machineExpiredOct 27, 87Apr 11, 89[F16D, B66D]
4768754 Manual hoist with overload preventerExpiredAug 26, 87Sep 06, 88[G05G, B66D]
4664357 Overload avoiding arrangement for a hoistExpiredMar 13, 85May 12, 87[B66D]
4438905 Device for mounting and dismounting chain blocksExpiredDec 03, 81Mar 27, 84[B66D]
4420144 Manual hoisting and pulling apparatusExpiredOct 13, 81Dec 13, 83[B66D]
4343240 TrolleyExpiredNov 04, 80Aug 10, 82[B61B]

Top Inventors for This Owner

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