YAMATO SCALE COMPANY, LIMITED, A COMPANY OF JAPAN

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5054652 Device and method for controlling distributive feeding deviceExpiredOct 18, 89Oct 08, 91[G01G]
5048623 Combination weighing apparatusExpiredApr 06, 90Sep 17, 91[G01G]
5040625 Inequality confined combination weigherExpiredJun 21, 90Aug 20, 91[G01G]
4874048 Loading and weighing structure for combination weighing machineExpiredMay 04, 87Oct 17, 89[G01G]
4840240 Weighing and packing deviceExpiredJan 25, 88Jun 20, 89[G01G]
4813205 Weighing and packing device having metal detectorExpiredDec 09, 87Mar 21, 89[B65B]
4782454 Combination weighing deviceExpiredAug 28, 86Nov 01, 88[G01G]
4766964 Apparent density measuring deviceExpiredMar 16, 87Aug 30, 88[G01N, G01G]
4766966 Apparatus and method of controlling rate of feeding product to weigherExpiredFeb 17, 87Aug 30, 88[G01G]
4764695 VibratorExpiredFeb 17, 87Aug 16, 88[H02K]
4721173 Automatic weighing system with density ratio control of volumeExpiredMar 16, 87Jan 26, 88[G01G]
4709770 Device for correcting dynamic weight signal from conveyer weigherExpiredDec 02, 86Dec 01, 87[G01G]
4662508 Product feeding device for combination weighing machineExpiredJul 17, 85May 05, 87[B65G, G01G]
4618013 Combination weighing machine with auxiliary weight hopperExpiredFeb 04, 85Oct 21, 86[G01G]
4611674 Analog weighing system with digital processing via a single A/D converterExpiredApr 08, 85Sep 16, 86[G01G]
4611675 Mass meterExpiredMay 01, 85Sep 16, 86[G01G]
4570728 Combination weighing systemExpiredOct 25, 84Feb 18, 86[G01G]
4441567 Combination weighing machineExpiredAug 09, 82Apr 10, 84[G01G]

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