Assignee
JAPAN NATIONAL OIL
JP·10 granted patents·563 citations·filing 1986–1997
Top patents by PatentIndex Score
10 records- 0191US5736107AApparatus for oxidative coupling of methaneJAPAN NATIONAL OIL·Filed 1997·Granted Apr 7, 1998·91 cites·4 claims
- 0287US5875859ADevice for controlling the drilling direction of drill bitJAPAN NATIONAL OIL·Filed 1996·Granted Mar 2, 1999·170 cites·6 claims
- 0387US5675325AInformation transmitting apparatus using tube bodyJAPAN NATIONAL OIL·Filed 1995·Granted Oct 7, 1997·64 cites·10 claims
- 0483US5750821AMethod for oxidative coupling of methane comprising catalytic crackingJAPAN NATIONAL OIL·Filed 1995·Granted May 12, 1998·84 cites·11 claims
- 0579US5189415AReceiving apparatusJAPAN NATIONAL OIL·Filed 1991·Granted Feb 23, 1993·77 cites·13 claims
- 0654US4828353ASubmersible optical wet connectorJAPAN NATIONAL OIL·Filed 1987·Granted May 9, 1989·18 cites·15 claims
- 0743US5389550AOrganic substance analyzing method and apparatus using portable constructionJAPAN NATIONAL OIL·Filed 1993·Granted Feb 14, 1995·19 cites·7 claims
- 0841US6059661AShaft alignmentJAPAN NATIONAL OIL·Filed 1996·Granted May 9, 2000·17 cites·6 claims
- 0934US4756559ASwivel joint for fluid pipesJAPAN NATIONAL OIL·Filed 1986·Granted Jul 12, 1988·11 cites·4 claims
- 1028US5327773AMethod and apparatus for measuring steam density by neutron methodJAPAN NATIONAL OIL·Filed 1993·Granted Jul 12, 1994·12 cites·7 claims
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