Inventor
Kyoji Tsutsui
Inventor
Mishima, JP
Overview
Patents· 45 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B41Mprimary
B41MPrinting, duplicating, marking, or copying processes37%
G03GElectrography19%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments10%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
B41JTypewriters6%
C07CAcyclic or carbocyclic compounds4%
C07DHeterocyclic compounds4%
Y10TTechnical subjects covered by former us classification4%
G06FElectric digital data processing2%
G06KGraphical data reading2%
PatentTitleYear
7,553,796'Phenol compound, reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording member, image-processing apparatus and image-processing method'20097,456,132'Phenol compound, reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording member, image-processing apparatus and imaging-processing method'20086,677,273'Erasable recording material capable of inputting additional information written thereon and information recording system and information recording method using the recording material'20046,656,879'Method of reversible selective manifestation of different states of functional element'20036,579,826'Reversible thermosensitive recording medium and image forming and erasing method using the recording medium'20036,432,518'Erasable recording material capable of inputting additional information written thereon and information recording system and information recording method using the recording material'20026,154,243'Reversible thermal recording method and apparatus therefor'20006,090,748'Reversible thermosensitive recording material and recording method and recording apparatus therefor'20006,090,508'Optically anisotropic recording medium and method of recording and erasing information using the same'20006,090,192'Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using same'20006,063,173'Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same'20006,001,159'Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same'19995,981,429'Reversible thermosensitive recording medium'19995,981,115'Reversible thermosensitive recording material'19995,955,225'Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using same'19995,942,377'Reversible thermosensitive composition and reversible thermosensitive recording medium using same'19995,932,516'Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same'19995,891,823'Reversible thermosensitive recording medium'19995,868,821'Thermally reversible color forming composition and thermally reversible recording medium using the thermally reversible color forming composition'19995,866,505'Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using the same'19995,703,005'Thermosensitive coloring composition and reversible thermosensitive recording medium using same'19975,641,724'Reversible thermosensitive coloring composition and a thermosensitive recording medium using thereof'19975,585,320'Reversible thermosensitive coloring recording method, recording medium and recording apparatus for the recording method'19965,552,364'Reversible theromosensitive coloring recording method, recording medium and recording apparatus for the recording method'19965,534,907'Reversible thermosensitive coloring recording method, recording medium and recording apparatus for the recording method'19965,521,138'Reversible thermosensitive coloring composition, and recording medium using the same'19965,432,534'Reversible thermosensitive coloring composition, recording medium, recording method, and image display apparatus using the recording medium'19955,395,433'Reversible thermosensitive coloring composition, recording medium, recording method, and image display apparatus using the recording medium'19955,296,439'Reversible thermosensitive coloring recording medium, recording method, and image display apparatus using the recording medium'19945,185,194'Heat-mode recording medium'19934,716,220'Disazo compounds with xanthone nucleus for electrophotography'19874,596,754'Electrophotographic printing original plate and electrophotographic plate making process using the printing original plate'19864,565,759'Plates for use in lithographic printing'19864,540,643'Tetrazonium salt compounds, novel disazo compounds, method for the production thereof and disazo compound-containing electrophotographic elements'19854,363,859'Electrophotographic photoconductor'19824,332,948'Novel hydrazone compounds and process for preparing the same'19824,327,020'Bis-azo compounds'19824,314,016'Electrophotographic element having a bisazo photoconductor'19824,314,015'Electrophotographic sensitive materials containing disazo compounds'19824,299,896'Electrophotographic sensitive materials containing a disazo pigment'19814,293,492'Disazo compounds derived from 3,6-bis(styryl)-9-ethylcarbazole'19814,260,672'Electrophotographic sensitive element having a photoconductive disazo pigment'19814,251,613'Disazo compounds, process for preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials'19814,251,614'Novel disazo compounds, process for the preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials'19814,245,021'Electrophotographic element having charge transport layer'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981–2009Patents assigned to RICOH KK (45)· patent assignee history
1981–1982Based in Tokyo, JP· patent location history
1982Based in Numazu, JP· patent location history
1985–2009Based in Mishima, JP· patent location history
1999Patents assigned to MIYOSHI YUSHI KK (2)· patent assignee history
1999–2003Based in Shizuoka, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH KK | 45 | 1981–2009 |
| MIYOSHI YUSHI KK | 2 | 1999 |
Locations
| Location | Patents | Span |
|---|---|---|
| Mishima, JP | 31 | 1985–2009 |
| Tokyo, JP | 9 | 1981–1982 |
| Shizuoka, JP | 3 | 1999–2003 |
| Numazu, JP | 2 | 1982 |