Assignee
PLATINUM PEN CO LTD
JP·6 granted patents·153 citations·filing 1984–2015
Top patents by PatentIndex Score
6 records- 0188US4798310AArticle storage containerPLATINUM PEN CO LTD·Filed 1987·Granted Jan 17, 1989·103 cites·9 claims
- 0269US4573818ACap assembly for a single or plural writing instrumentsPLATINUM PEN CO LTD·Filed 1984·Granted Mar 4, 1986·27 cites·5 claims
- 0359US7241064B2Grip of writing materialPLATINUM PEN CO LTD·Filed 2005·Granted Jul 10, 2007·5 cites·8 claims
- 0458USD291452SCap for writing instrumentsPLATINUM PEN CO LTD·Filed 1984·Granted Aug 18, 1987·8 cites·1 claims
- 0549US10407583B2Ink for surgical markerPLATINUM PEN CO LTD·Filed 2015·Granted Sep 10, 2019·0 cites·5 claims
- 0648US5876136AWriting instrument with brushPLATINUM PEN CO LTD·Filed 1997·Granted Mar 2, 1999·10 cites·7 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →