Assignee
SHOWA SEITAI MFG
3 granted patents·49 citations·filing 1975–1981
Top patents by PatentIndex Score
3 records- 0169US4132347AMoisture proof bags provided with blow-in ports and method of manufacturing the sameSHOWA SEITAI MFG·Filed 1977·Granted Jan 2, 1979·23 cites·5 claims
- 0266US4014252AMethod of manufacturing bagsSHOWA SEITAI MFG·Filed 1975·Granted Mar 29, 1977·16 cites·5 claims
- 0364US4460426AComposite paper sheets adapted to manufacture bags and processSHOWA SEITAI MFG·Filed 1981·Granted Jul 17, 1984·10 cites·4 claims
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