Assignee
NIPPON OIL SEAL IND CO LTD
24 granted patents·648 citations·filing 1974–1984
Top patents by PatentIndex Score
24 records- 0196US4550920AOil seal with main lip, subsidiary lip and dust lipNIPPON OIL SEAL IND CO LTD·Filed 1984·Granted Nov 5, 1985·85 cites·14 claims
- 0296US4531747AExtended wear annular oil sealNIPPON OIL SEAL IND CO LTD·Filed 1984·Granted Jul 30, 1985·70 cites·8 claims
- 0394US3953383ACatalytic process for copolymerizing epoxy compounds with carbon dioxideNIPPON OIL SEAL IND CO LTD·Filed 1974·Granted Apr 27, 1976·108 cites·7 claims
- 0485US3980483APhotocurable compositionNIPPON OIL SEAL IND CO LTD·Filed 1975·Granted Sep 14, 1976·61 cites·16 claims
- 0576US4111436AMechanical sealNIPPON OIL SEAL IND CO LTD·Filed 1976·Granted Sep 5, 1978·29 cites·11 claims
- 0675US4234196ARoll neck sealing deviceNIPPON OIL SEAL IND CO LTD·Filed 1979·Granted Nov 18, 1980·34 cites·3 claims
- 0770US4575104ARadial type liquid seal with bend preventing meansNIPPON OIL SEAL IND CO LTD·Filed 1984·Granted Mar 11, 1986·25 cites·2 claims
- 0869US4183289ABellows apparatusNIPPON OIL SEAL IND CO LTD·Filed 1977·Granted Jan 15, 1980·16 cites·2 claims
- 0969US4179883AReed valve assemblyNIPPON OIL SEAL IND CO LTD·Filed 1977·Granted Dec 25, 1979·21 cites·1 claims
- 1068US4550486AMethod and apparatus for mounting oil seal in machine housingNIPPON OIL SEAL IND CO LTD·Filed 1984·Granted Nov 5, 1985·25 cites·10 claims
- 1168US3993787ARotary molderNIPPON OIL SEAL IND CO LTD·Filed 1975·Granted Nov 23, 1976·26 cites·29 claims
- 1268US3952454ADevice for sealing doors of coke ovenNIPPON OIL SEAL IND CO LTD·Filed 1974·Granted Apr 27, 1976·14 cites·4 claims
- 1364US4468041ABackup ring for hydraulic apparatus sealsNIPPON OIL SEAL IND CO LTD·Filed 1982·Granted Aug 28, 1984·27 cites·20 claims
- 1464US4076047AReed valveNIPPON OIL SEAL IND CO LTD·Filed 1976·Granted Feb 28, 1978·23 cites·14 claims
- 1563US4278261ASealing deviceNIPPON OIL SEAL IND CO LTD·Filed 1979·Granted Jul 14, 1981·16 cites·1 claims
- 1660US4166898AProcess for producing copolymer having carbonate linkagesNIPPON OIL SEAL IND CO LTD·Filed 1976·Granted Sep 4, 1979·13 cites·8 claims
- 1751US4437673ASealing deviceNIPPON OIL SEAL IND CO LTD·Filed 1981·Granted Mar 20, 1984·12 cites·7 claims
- 1850US4195853AMechanical shaft sealNIPPON OIL SEAL IND CO LTD·Filed 1978·Granted Apr 1, 1980·11 cites·2 claims
- 1945US3977125ADevice for sealing steel doors of coke ovenNIPPON OIL SEAL IND CO LTD·Filed 1974·Granted Aug 31, 1976·5 cites·5 claims
- 2044US4306729ASealing materialNIPPON OIL SEAL IND CO LTD·Filed 1979·Granted Dec 22, 1981·12 cites·7 claims
- 2140US3962776AMethod of making an oil sealNIPPON OIL SEAL IND CO LTD·Filed 1975·Granted Jun 15, 1976·6 cites·5 claims
- 2236US4287814ABellows apparatusNIPPON OIL SEAL IND CO LTD·Filed 1979·Granted Sep 8, 1981·3 cites·1 claims
- 2333US4175332AMethod of measuring directional properties of surface of shaftsNIPPON OIL SEAL IND CO LTD·Filed 1978·Granted Nov 27, 1979·3 cites·5 claims
- 2428US4212476AHydrodynamic sealNIPPON OIL SEAL IND CO LTD·Filed 1979·Granted Jul 15, 1980·3 cites·4 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →