Inventor

SUNAGO HIROFUMI

JP5 patents

⚠️ This page may combine multiple inventors who share the name “SUNAGO HIROFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NIPPON STEEL CORP

3 patents

US4631181ADec 23, 1986

Process for producing mesophase pitch

NIPPON STEEL CORP18 citations77

US5370856ADec 6, 1994

High strength carbon fiber and pre-carbonized fiber

NIPPON STEEL CORP2 citations59

US5037589AAug 6, 1991

Method of producing mesophase pitch type carbon fibers and nozzle for spinning same

NIPPON STEEL CORP4 citations57

NITTETSU CHEM IND CO

2 patents

US4116815ASep 26, 1978

Process for preparing needle coal pitch coke

NITTETSU CHEM IND CO21 citations75

US4127472ANov 28, 1978

Process for preparing a raw material for the manufacture of needle coke

NITTETSU CHEM IND CO20 citations71