Inventor
CHIU I-CHING
US14 patents
⚠️ This page may combine multiple inventors who share the name “CHIU I-CHING”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PENNZOIL QUAKER STATE CO
6 patentsUS6417416B1Jul 9, 2002
Ethylene-alpha-olefin polymers, processes and uses
PENNZOIL QUAKER STATE CO15 citations92
US6262324B1Jul 17, 2001
Ethylene-alpha-olefin polymers, processes and uses
PENNZOIL QUAKER STATE CO15 citations92
US6124513ASep 26, 2000
Ethylene-alpha-olefin polymers, processes and uses
PENNZOIL QUAKER STATE CO27 citations92
US6388148B2May 14, 2002
Ethylene-alpha-olefin polymers, processes and uses
PENNZOIL QUAKER STATE CO16 citations88
US6586646B1Jul 1, 2003
Vinylidene-containing polymers and uses thereof
PENNZOIL QUAKER STATE CO12 citations73
US6667284B2Dec 23, 2003
Lubricant for magnetic recording medium and use thereof
PENNZOIL QUAKER STATE CO5 citations70
PENNZOIL PROD CO
5 patentsUS4873370AOct 10, 1989
Alkylene diamines for use in friction and wear reducing compositions
PENNZOIL PROD CO29 citations92
US4863622ASep 5, 1989
Phosphorus-free antiwear/antifriction additives
PENNZOIL PROD CO26 citations92
US5672727ASep 30, 1997
Dithiocarbamoyl diols and borate esters thereof for use in lubricant compositions
PENNZOIL PROD CO13 citations73
US5560853AOct 1, 1996
Dithiocarbamoyl diols and borate esters thereof for use in lubricant compositions
PENNZOIL PROD CO4 citations62
US5319144AJun 7, 1994
Process for productin of 4,4'-thiobis phenols
PENNZOIL PROD CO3 citations62