Inventor · disambiguated record
Kyoji Tsutsui
Also filed as: TSUTSUI KYOJI
45 granted patents·977 citations·filing 1978–2006
98Inventor score
Files withRICOH KK45
Top patents by PatentIndex Score
45 records- 0199US6579826B2Reversible thermosensitive recording medium and image forming and erasing method using the recording mediumRICOH KK·Filed 2001·Granted Jun 17, 2003·122 cites·26 claims
- 0297US4245021AElectrophotographic element having charge transport layerRICOH KK·Filed 1979·Granted Jan 13, 1981·85 cites·16 claims
- 0395US5432534AReversible thermosensitive coloring composition, recording medium, recording method, and image display apparatus using the recording mediumRICOH KK·Filed 1994·Granted Jul 11, 1995·65 cites·2 claims
- 0494US6677273B2Erasable recording material capable of inputting additional information written thereon and information recording system and information recording method using the recording materialRICOH KK·Filed 2002·Granted Jan 13, 2004·33 cites·17 claims
- 0591US4596754AElectrophotographic printing original plate and electrophotographic plate making process using the printing original plateRICOH KK·Filed 1985·Granted Jun 24, 1986·38 cites·12 claims
- 0690US5296439AReversible thermosensitive coloring recording medium, recording method, and image display apparatus using the recording mediumRICOH KK·Filed 1991·Granted Mar 22, 1994·43 cites·32 claims
- 0786US5981115AReversible thermosensitive recording materialRICOH KK·Filed 1997·Granted Nov 9, 1999·42 cites·40 claims
- 0886US4251614ANovel disazo compounds, process for the preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materialsRICOH KK·Filed 1978·Granted Feb 17, 1981·21 cites·68 claims
- 0985US7456132B2Phenol compound, reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording member, image-processing apparatus and imaging-processing methodRICOH KK·Filed 2005·Granted Nov 25, 2008·6 cites·21 claims
- 1084US4251613ADisazo compounds, process for preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materialsRICOH KK·Filed 1978·Granted Feb 17, 1981·22 cites·60 claims
- 1182US5521138AReversible thermosensitive coloring composition, and recording medium using the sameRICOH KK·Filed 1992·Granted May 28, 1996·29 cites·6 claims
- 1281US4260672AElectrophotographic sensitive element having a photoconductive disazo pigmentRICOH KK·Filed 1978·Granted Apr 7, 1981·19 cites·16 claims
- 1380US6432518B1Erasable recording material capable of inputting additional information written thereon and information recording system and information recording method using the recording materialRICOH KK·Filed 1999·Granted Aug 13, 2002·24 cites·56 claims
- 1480US4299896AElectrophotographic sensitive materials containing a disazo pigmentRICOH KK·Filed 1978·Granted Nov 10, 1981·19 cites·16 claims
- 1579US6090748AReversible thermosensitive recording material and recording method and recording apparatus thereforRICOH KK·Filed 1998·Granted Jul 18, 2000·31 cites·15 claims
- 1679US4363859AElectrophotographic photoconductorRICOH KK·Filed 1978·Granted Dec 14, 1982·18 cites·14 claims
- 1778US6154243AReversible thermal recording method and apparatus thereforRICOH KK·Filed 1998·Granted Nov 28, 2000·36 cites·28 claims
- 1876US6063173AReversible thermosensitive coloring composition and reversible thermosensitive recording medium using the sameRICOH KK·Filed 1999·Granted May 16, 2000·22 cites·11 claims
- 1976US5641724AReversible thermosensitive coloring composition and a thermosensitive recording medium using thereofRICOH KK·Filed 1995·Granted Jun 24, 1997·26 cites·6 claims
- 2075US5981429AReversible thermosensitive recording mediumRICOH KK·Filed 1997·Granted Nov 9, 1999·25 cites·8 claims
- 2175US4314015AElectrophotographic sensitive materials containing disazo compoundsRICOH KK·Filed 1980·Granted Feb 2, 1982·18 cites·16 claims
- 2274US5185194AHeat-mode recording mediumRICOH KK·Filed 1990·Granted Feb 9, 1993·19 cites·27 claims
- 2373US5942377AReversible thermosensitive composition and reversible thermosensitive recording medium using sameRICOH KK·Filed 1997·Granted Aug 24, 1999·24 cites·4 claims
- 2471US4716220ADisazo compounds with xanthone nucleus for electrophotographyRICOH KK·Filed 1985·Granted Dec 29, 1987·7 cites·15 claims
- 2570US5585320AReversible thermosensitive coloring recording method, recording medium and recording apparatus for the recording methodRICOH KK·Filed 1995·Granted Dec 17, 1996·16 cites·9 claims
- 2670US5395433AReversible thermosensitive coloring composition, recording medium, recording method, and image display apparatus using the recording mediumRICOH KK·Filed 1993·Granted Mar 7, 1995·12 cites·2 claims
- 2770US4332948ANovel hydrazone compounds and process for preparing the sameRICOH KK·Filed 1980·Granted Jun 1, 1982·6 cites·4 claims
- 2867US5703005AThermosensitive coloring composition and reversible thermosensitive recording medium using sameRICOH KK·Filed 1996·Granted Dec 30, 1997·18 cites·3 claims
- 2966US6090192AReversible thermosensitive coloring composition and reversible thermosensitive recording medium using sameRICOH KK·Filed 1998·Granted Jul 18, 2000·15 cites·3 claims
- 3066US5534907AReversible thermosensitive coloring recording method, recording medium and recording apparatus for the recording methodRICOH KK·Filed 1995·Granted Jul 9, 1996·14 cites·1 claims
- 3163US4565759APlates for use in lithographic printingRICOH KK·Filed 1984·Granted Jan 21, 1986·11 cites·8 claims
- 3262US5552364AReversible theromosensitive coloring recording method, recording medium and recording apparatus for the recording methodRICOH KK·Filed 1993·Granted Sep 3, 1996·8 cites·2 claims
- 3361US5955225AReversible thermosensitive coloring composition and reversible thermosensitive recording medium using sameRICOH KK·Filed 1997·Granted Sep 21, 1999·14 cites·4 claims
- 3459US5891823AReversible thermosensitive recording mediumRICOH KK·Filed 1997·Granted Apr 6, 1999·11 cites·1 claims
- 3557US5868821AThermally reversible color forming composition and thermally reversible recording medium using the thermally reversible color forming compositionRICOH KK·Filed 1997·Granted Feb 9, 1999·12 cites·11 claims
- 3652US6090508AOptically anisotropic recording medium and method of recording and erasing information using the sameRICOH KK·Filed 1997·Granted Jul 18, 2000·10 cites·16 claims
- 3751US7553796B2Phenol compound, reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording member, image-processing apparatus and image-processing methodRICOH KK·Filed 2006·Granted Jun 30, 2009·0 cites·23 claims
- 3850US5932516AReversible thermosensitive coloring composition and reversible thermosensitive recording medium using the sameRICOH KK·Filed 1996·Granted Aug 3, 1999·7 cites·12 claims
- 3947US5866505AReversible thermosensitive coloring composition and reversible thermosensitive recording medium using the sameRICOH KK·Filed 1996·Granted Feb 2, 1999·7 cites·2 claims
- 4047US4314016AElectrophotographic element having a bisazo photoconductorRICOH KK·Filed 1980·Granted Feb 2, 1982·6 cites·24 claims
- 4145US6001159AReversible thermosensitive coloring composition and reversible thermosensitive recording medium using the sameRICOH KK·Filed 1998·Granted Dec 14, 1999·6 cites·2 claims
- 4244US4327020ABis-azo compoundsRICOH KK·Filed 1980·Granted Apr 27, 1982·5 cites·14 claims
- 4339US6656879B2Method of reversible selective manifestation of different states of functional elementRICOH KK·Filed 1993·Granted Dec 2, 2003·2 cites·9 claims
- 4436US4293492ADisazo compounds derived from 3,6-bis(styryl)-9-ethylcarbazoleRICOH KK·Filed 1980·Granted Oct 6, 1981·2 cites·26 claims
- 4533US4540643ATetrazonium salt compounds, novel disazo compounds, method for the production thereof and disazo compound-containing electrophotographic elementsRICOH KK·Filed 1984·Granted Sep 10, 1985·1 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →