Inventor
DOHI HIDEYUKI
JP28 patents
⚠️ This page may combine multiple inventors who share the name “DOHI HIDEYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON PETROCHEMICALS CO LTD
25 patentsUS5017733AMay 21, 1991
Electrical insulating oil composition
NIPPON PETROCHEMICALS CO LTD51 citations96
US5015793AMay 14, 1991
Electrical insulating oil composition
NIPPON PETROCHEMICALS CO LTD21 citations82
US5107395AApr 21, 1992
Method of producing insulating oil comprising dibenzylbenzene
NIPPON PETROCHEMICALS CO LTD9 citations74
US5081757AJan 21, 1992
Electrical insulating oil composition and capacitors prepared therewith
NIPPON PETROCHEMICALS CO LTD6 citations74
US4902841AFeb 20, 1990
Method for producing electrical insulating oil composition
NIPPON PETROCHEMICALS CO LTD10 citations74
US4899009AFeb 6, 1990
Method for producing m-benzyltolune
NIPPON PETROCHEMICALS CO LTD8 citations74
US4870221ASep 26, 1989
Oil-filled capacitor
NIPPON PETROCHEMICALS CO LTD8 citations74
US4639833AJan 27, 1987
New electrical insulating oil and oil-filled electrical appliances
NIPPON PETROCHEMICALS CO LTD6 citations74
US4591948AMay 27, 1986
Oil-filled capacitor
NIPPON PETROCHEMICALS CO LTD7 citations74
US4568793AFeb 4, 1986
Electrical insulating oil and oil-filled electrical appliances
NIPPON PETROCHEMICALS CO LTD6 citations74
US6207866B1Mar 27, 2001
Method for producing diarylmethane or its derivatives
NIPPON PETROCHEMICALS CO LTD8 citations70
US5171906ADec 15, 1992
Process for treating by-product oil
NIPPON PETROCHEMICALS CO LTD5 citations63
US5113029AMay 12, 1992
Electric insulating oil composition
NIPPON PETROCHEMICALS CO LTD3 citations63
US4982025AJan 1, 1991
Electrical insulating oil comprising improved fraction
NIPPON PETROCHEMICALS CO LTD6 citations63
US4750083AJun 7, 1988
Electrical insulating oil composition
NIPPON PETROCHEMICALS CO LTD3 citations63
US4716084ADec 29, 1987
Oil-impregnated capacitor
NIPPON PETROCHEMICALS CO LTD3 citations63
US4670348AJun 2, 1987
Electrical appliance impregnated with a curable impregnant composition
NIPPON PETROCHEMICALS CO LTD2 citations63
US5877362AMar 2, 1999
Method for producing diphenylmethane
NIPPON PETROCHEMICALS CO LTD3 citations57
US5134761AAug 4, 1992
Electrical insulating oil composition and capacitors prepared therewith
NIPPON PETROCHEMICALS CO LTD0 citations52
US4967028AOct 30, 1990
Electrical insulating oil composition and electrical appliances impregnated therewith
NIPPON PETROCHEMICALS CO LTD1 citations52
US4802058AJan 31, 1989
Novel method for refining electrical insulating oil
NIPPON PETROCHEMICALS CO LTD1 citations52
US5698023ADec 16, 1997
Process of producing copper phthalocyanine pigment having a bright tone
NIPPON PETROCHEMICALS CO LTD0 citations50
US5241997ASep 7, 1993
Apparatus and method for filling and impregnating capacitors with a capacitor oil
NIPPON PETROCHEMICALS CO LTD1 citations46
US6350930B1Feb 26, 2002
Method for producing aromatic compound
NIPPON PETROCHEMICALS CO LTD0 citations41
US6255549B1Jul 3, 2001
Method for producing low bromine number fraction
NIPPON PETROCHEMICALS CO LTD0 citations41