Inventor
TORII MASAFUMI
JP37 patents
⚠️ This page may combine multiple inventors who share the name “TORII MASAFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
33 patentsUS6063173AMay 16, 2000
Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same
RICOH KK22 citations93
US7166689B2Jan 23, 2007
Aryl amine polymer, thin film transistor using the aryl amine polymer, and method of manufacturing the thin film transistor
RICOH KK36 citations92
US6677273B2Jan 13, 2004
Erasable recording material capable of inputting additional information written thereon and information recording system and information recording method using the recording material
RICOH KK33 citations92
US6432518B1Aug 13, 2002
Erasable recording material capable of inputting additional information written thereon and information recording system and information recording method using the recording material
RICOH KK24 citations92
US6261992B1Jul 17, 2001
Reversible thermosensitive recording material and recording method and apparatus therefor
RICOH KK33 citations92
US6207613B1Mar 27, 2001
Reversible thermosensitive coloring composition and recording material using the composition and recording method using the recording material
RICOH KK17 citations92
US6154243ANov 28, 2000
Reversible thermal recording method and apparatus therefor
RICOH KK36 citations92
US6090748AJul 18, 2000
Reversible thermosensitive recording material and recording method and recording apparatus therefor
RICOH KK31 citations92
US5942377AAug 24, 1999
Reversible thermosensitive composition and reversible thermosensitive recording medium using same
RICOH KK24 citations92
US5489501AFeb 6, 1996
Recording composition
RICOH KK28 citations92
US5446011AAug 29, 1995
Thermosensitive recording material
RICOH KK25 citations92
US5306687AApr 26, 1994
Thermosensitive recording material
RICOH KK29 citations92
US6489265B1Dec 3, 2002
Reversible thermosensitive recording medium, method of producing the medium, information recording devices using the medium, and image formation and erasing method using the medium
RICOH KK16 citations91
US6174836B1Jan 16, 2001
Reversible thermosensitive recording medium, method of producing the medium, information recording devices using the medium, and image formation and erasing method using the medium
RICOH KK29 citations91
US7745988B2Jun 29, 2010
3, 6-diphenylcarbazole compound and organic electroluminescent device
RICOH KK27 citations90
US7816674B2Oct 19, 2010
Organic thin-film transistor
RICOH KK18 citations84
US7550554B2Jun 23, 2009
Aryl amine polymer, thin film transistor using the new aryl amine polymer, and method of manufacturing the thin film transistor
RICOH KK10 citations84
US5703005ADec 30, 1997
Thermosensitive coloring composition and reversible thermosensitive recording medium using same
RICOH KK18 citations84
US6362130B1Mar 26, 2002
Reversible thermosensitive recording medium, card, label, disk, disk cartridge, tape cassette, method of producing the recording medium, and method of recording and erasing images using the same
RICOH KK16 citations83
US6524377B2Feb 25, 2003
Reversible thermosensitive coloring composition and recording material using the composition and recording method using the recording material
RICOH KK5 citations74
US5932516AAug 3, 1999
Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same
RICOH KK7 citations74
US5866505AFeb 2, 1999
Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same
RICOH KK7 citations74
US6693061B2Feb 17, 2004
Light-permeable thermosensitive recording material
RICOH KK9 citations73
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
US6503868B2Jan 7, 2003
Reversible thermosensitive coloring composition and recording material using the composition and recording method using the recording material
RICOH KK1 citations63
US6410478B1Jun 25, 2002
Reversible thermosensitive recording medium
RICOH KK5 citations63
US6001159ADec 14, 1999
Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same
RICOH KK6 citations63
US7071145B2Jul 4, 2006
Thermosensitive recording material, and synthesis method of oligomer composition for the recording material
RICOH KK1 citations52
US6878671B2Apr 12, 2005
Thermosensitive recording material, and synthesis method of oligomer composition for the recording material
RICOH KK0 citations52
US7718760B2May 18, 2010
π-Conjugated polymer and manufacturing method thereof
RICOH KK0 citations42