Assignee
NIPPON ROKI CO LTD
JP·5 granted patents·118 citations·filing 1988–1991
Top patents by PatentIndex Score
5 records- 0172US4882051ACartridge filter incorporating a bag-like bodyNIPPON ROKI CO LTD·Filed 1988·Granted Nov 21, 1989·36 cites·4 claims
- 0264US5230760AMethod for manufacturing micro membrane pleats type filter cartridgeNIPPON ROKI CO LTD·Filed 1991·Granted Jul 27, 1993·32 cites·6 claims
- 0358US5026478AMetal holder and protector for a disposable plastic capsuleNIPPON ROKI CO LTD·Filed 1990·Granted Jun 25, 1991·29 cites·2 claims
- 0449US5215661AMulti-layer filter cartridgeNIPPON ROKI CO LTD·Filed 1991·Granted Jun 1, 1993·17 cites·8 claims
- 0529US5092351AMulti-layer filter cartridgeNIPPON ROKI CO LTD·Filed 1990·Granted Mar 3, 1992·4 cites·6 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →