Assignee
PENNZOIL QUAKER STATE
US·2 granted patents·60 citations·filing 1999–1999
Top patents by PatentIndex Score
2 records- 0177US6172014B1Method of lubricating compression cylinders used in the manufacture of high-pressure polyethylenePENNZOIL QUAKER STATE·Filed 1999·Granted Jan 9, 2001·39 cites·16 claims
- 0258US6217745B1Method for monitoring agents in hydrocarbon fluidsPENNZOIL QUAKER STATE·Filed 1999·Granted Apr 17, 2001·21 cites·20 claims
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