Inventor
YOKOTA KIYOHIKO
JP15 patents
⚠️ This page may combine multiple inventors who share the name “YOKOTA KIYOHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IDEMITSU KOSAN CO
11 patentsUS5854165ADec 29, 1998
Transition metal compound, catalyst for olefin polymerization, process for preparing olefin polymer by use of catalyst
IDEMITSU KOSAN CO54 citations96
US6339135B1Jan 15, 2002
Transition metal compound, catalyst for olefin polymerization, process for preparing olefin polymer
IDEMITSU KOSAN CO37 citations92
US6171994B1Jan 9, 2001
Multiple crosslinking type transition metal compound used for olefin polymerization process
IDEMITSU KOSAN CO12 citations73
US7402610B2Jul 22, 2008
Carbonyl compound containing long-chain branched alkyl group
IDEMITSU KOSAN CO2 citations62
US12071492B2Aug 27, 2024
Styrene resin, styrene resin composition, molded article thereof, and styrene resin production method
IDEMITSU KOSAN CO0 citations61
US11180584B2Nov 23, 2021
Method for producing styrene resin and styrene resin molded article
IDEMITSU KOSAN CO0 citations61
US6107232AAug 22, 2000
Polymerization catalyst and process for preparing polymer by use of same
IDEMITSU KOSAN CO6 citations61
US12351765B2Jul 8, 2025
Saturated aliphatic hydrocarbon compound composition, lubricant composition, and method for producing saturated aliphatic hydrocarbon compound composition
IDEMITSU KOSAN CO0 citations57
US6939929B2Sep 6, 2005
Alpha-olefin-aromatic vinyl copolymer
IDEMITSU KOSAN CO3 citations57
US12428607B2Sep 30, 2025
Lubricant composition
IDEMITSU KOSAN CO0 citations55
US12084537B2Sep 10, 2024
Petroleum resin, hydrogenated petroleum resin, and production method for hydrogenated petroleum resin
IDEMITSU KOSAN CO0 citations51