Assignee
ANCOS CO LTD
JP·20 granted patents·470 citations·filing 1975–1996
Top patents by PatentIndex Score
20 records- 0189US5915867ACapless writing toolANCOS CO LTD·Filed 1996·Granted Jun 29, 1999·39 cites·23 claims
- 0286US5048990AWriting instrument with drying-preventing mechanismANCOS CO LTD·Filed 1987·Granted Sep 17, 1991·48 cites·25 claims
- 0384US4629348AWriting instrument with sealing cap and additional rearward sealANCOS CO LTD·Filed 1984·Granted Dec 16, 1986·38 cites·20 claims
- 0484US4575271AWriting instrument with movable closure and second sealing meansANCOS CO LTD·Filed 1983·Granted Mar 11, 1986·38 cites·21 claims
- 0579US4115015ARetractable pen with internal tip seatingANCOS CO LTD·Filed 1977·Granted Sep 19, 1978·28 cites·5 claims
- 0679US3989389AMulti-color mechanical writing instrumentANCOS CO LTD·Filed 1975·Granted Nov 2, 1976·28 cites·3 claims
- 0776US4358210AMechanical pencil with chuck closing by normal writing gripANCOS CO LTD·Filed 1979·Granted Nov 9, 1982·25 cites·1 claims
- 0876US4270870AMechanical pencil with chuck closing by normal writing gripANCOS CO LTD·Filed 1978·Granted Jun 2, 1981·24 cites·8 claims
- 0974US4911569AMechanical pencil with a fluid actuatorANCOS CO LTD·Filed 1989·Granted Mar 27, 1990·33 cites·3 claims
- 1074US4469462AWriting instrument with sealing tipANCOS CO LTD·Filed 1982·Granted Sep 4, 1984·25 cites·33 claims
- 1174US4106874AMechanical pencilANCOS CO LTD·Filed 1976·Granted Aug 15, 1978·23 cites·8 claims
- 1273US4269524AMechanical pencilANCOS CO LTD·Filed 1979·Granted May 26, 1981·22 cites·12 claims
- 1371US4479732AWriting instrument with sealing cap retained in tipANCOS CO LTD·Filed 1982·Granted Oct 30, 1984·22 cites·23 claims
- 1464US4382706AMechanical pencilANCOS CO LTD·Filed 1981·Granted May 10, 1983·18 cites·7 claims
- 1553US4362410AMechanical pencilANCOS CO LTD·Filed 1980·Granted Dec 7, 1982·12 cites·7 claims
- 1650US4218153AMechanical pencilANCOS CO LTD·Filed 1979·Granted Aug 19, 1980·9 cites·8 claims
- 1748US6095706AWriting instrument operated by a finger at a holding positionANCOS CO LTD·Filed 1991·Granted Aug 1, 2000·12 cites·8 claims
- 1848US4966483AValve operating mechanismANCOS CO LTD·Filed 1988·Granted Oct 30, 1990·15 cites·39 claims
- 1947US4544295AMechanical pencil with self-contained insertANCOS CO LTD·Filed 1983·Granted Oct 1, 1985·9 cites·13 claims
- 2032US4979839AMechanical pencil having an automatic lead extending mechanismANCOS CO LTD·Filed 1989·Granted Dec 25, 1990·2 cites·25 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →