Inventor
KAMIO KATSUHISA
JP5 patents
Patents
5 patentsUS5942377AAug 24, 1999
Reversible thermosensitive composition and reversible thermosensitive recording medium using same
RICOH KK24 citations92
US6090192AJul 18, 2000
Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using same
RICOH KK15 citations73
US5955225ASep 21, 1999
Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using same
RICOH KK14 citations73
US5891823AApr 6, 1999
Reversible thermosensitive recording medium
RICOH KK11 citations73
US5868821AFeb 9, 1999
Thermally reversible color forming composition and thermally reversible recording medium using the thermally reversible color forming composition
RICOH KK12 citations73