Inventor
KIKKAWA KATSUMASA
JP7 patents
⚠️ This page may combine multiple inventors who share the name “KIKKAWA KATSUMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HODOGAYA CHEMICAL CO LTD
6 patentsUS5041560AAug 20, 1991
Fluoran compound
HODOGAYA CHEMICAL CO LTD2 citations61
US4612558ASep 16, 1986
Fluoran compounds
HODOGAYA CHEMICAL CO LTD4 citations61
US4987262AJan 22, 1991
Cycloalkene compounds useful in recording materials
HODOGAYA CHEMICAL CO LTD3 citations57
US4642663AFeb 10, 1987
6-tetrahydrofurfurylaminofluoran compound useful as a color former on an heat sensitive recording sheet
HODOGAYA CHEMICAL CO LTD1 citations49
US4597795AJul 1, 1986
6-tetrahydrofurfurylaminofluoran compound useful as a color former
HODOGAYA CHEMICAL CO LTD1 citations49
US4839334AJun 13, 1989
Heat sensitive recording sheet
HODOGAYA CHEMICAL CO LTD0 citations39