Inventor
HIRAI OSAMU
JP12 patents
⚠️ This page may combine multiple inventors who share the name “HIRAI OSAMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI CHEMICAL CO LTD
8 patentsUS5540857AJul 30, 1996
Purification of liquid crystals and liquid crystal composition
HITACHI CHEMICAL CO LTD10 citations73
US5422034AJun 6, 1995
Purification of liquid crystals and liquid crystal composition
HITACHI CHEMICAL CO LTD9 citations73
US4427822AJan 24, 1984
Process for producing particulate polymer having imide groups
HITACHI CHEMICAL CO LTD15 citations73
US7273652B2Sep 25, 2007
Hollow carbon fiber and production method
HITACHI CHEMICAL CO LTD5 citations72
US6743500B2Jun 1, 2004
Hollow carbon fiber and production method
HITACHI CHEMICAL CO LTD9 citations72
US6641792B2Nov 4, 2003
Hollow carbon fiber and production method
HITACHI CHEMICAL CO LTD5 citations72
US4505818AMar 19, 1985
Liquid chromatographic column packing material
HITACHI CHEMICAL CO LTD5 citations62
US4486308ADec 4, 1984
Column packing material and production thereof
HITACHI CHEMICAL CO LTD2 citations62