Inventor
SAKAI YUKIO
JP32 patents
⚠️ This page may combine multiple inventors who share the name “SAKAI YUKIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI GAS CHEMICAL CO
9 patentsUS4891126AJan 2, 1990
Mesophase pitch for use in the making of carbon materials and process for producing the same
MITSUBISHI GAS CHEMICAL CO36 citations92
US4789455ADec 6, 1988
Process for producing pitch used as starting material for the making of carbon materials
MITSUBISHI GAS CHEMICAL CO20 citations81
US6241923B1Jun 5, 2001
Process for the production of carbon fibers
MITSUBISHI GAS CHEMICAL CO8 citations74
US5182010AJan 26, 1993
Mesophase pitch for use in the making of carbon materials
MITSUBISHI GAS CHEMICAL CO16 citations74
US4694089ASep 15, 1987
Process for preparing pyromellitic dianhydride
MITSUBISHI GAS CHEMICAL CO7 citations66
US6228343B1May 8, 2001
Method for producing isotropic pitch, activated carbon fibers and carbon materials for non-aqueous secondary battery anodes
MITSUBISHI GAS CHEMICAL CO4 citations59
US5944980AAug 31, 1999
Method for producing isotropic pitch, activated carbon fibers and carbon materials for non-aqueous secondary battery anodes
MITSUBISHI GAS CHEMICAL CO2 citations59
US4500730AFeb 19, 1985
Process for producing aromatic polycarboxylic acid
MITSUBISHI GAS CHEMICAL CO3 citations57
US6187964B1Feb 13, 2001
Method of producing phenol compound
MITSUBISHI GAS CHEMICAL CO0 citations50
MITSUBISHI PETROCHEMICAL CO
8 patentsUS4812437AMar 14, 1989
Silver-deposited catalyst for production of ethylene oxide
MITSUBISHI PETROCHEMICAL CO24 citations92
US4939114AJul 3, 1990
Silver-deposited catalyst for production of ethylene oxide
MITSUBISHI PETROCHEMICAL CO48 citations89
US4690913ASep 1, 1987
Silver catalyst for production of ethylene oxide from ethylene and process for producing the catalyst
MITSUBISHI PETROCHEMICAL CO19 citations81
US4746749AMay 24, 1988
Process for producing silver oxalate
MITSUBISHI PETROCHEMICAL CO7 citations73
US4414135ANov 8, 1983
Silver-based catalyst containing bromine and/or fluorine as an anionic component for the production of ethylene oxide
MITSUBISHI PETROCHEMICAL CO11 citations73
US4415476ANov 15, 1983
Silver-based catalyst containing chlorine as an anionic component for the production of ethylene oxide
MITSUBISHI PETROCHEMICAL CO15 citations68
US4786624ANov 22, 1988
Silver catalyst for production of ethylene oxide from ethylene
MITSUBISHI PETROCHEMICAL CO5 citations62
US4642360AFeb 10, 1987
Method for producing ethylene oxide
MITSUBISHI PETROCHEMICAL CO4 citations62
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
7 patentsUS5210504AMay 11, 1993
Semiconductor device for tv tuner and tv tuner using the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD56 citations95
US6472952B1Oct 29, 2002
Antenna duplexer circuit with a phase shifter on the receive side
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD44 citations92
US4660961AApr 28, 1987
Copying apparatus for synthesizing images
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD29 citations91
US4697913AOct 6, 1987
Copying apparatus for synthesizing images
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD24 citations81
US4361394ANov 30, 1982
Method and apparatus for scanning light beam
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD13 citations74
US5319318AJun 7, 1994
Gain control circuit and semiconductor device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations73
US6914481B2Jul 5, 2005
High frequency power amplifier apparatus and power amplifier module use the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD0 citations48