Inventor
Kunio Hayakawa
Inventor
Mishima, JP
Overview
Patents· 39 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B41Mprimary
B41MPrinting, duplicating, marking, or copying processes36%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%
C07CAcyclic or carbocyclic compounds8%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments6%
Y10TTechnical subjects covered by former us classification5%
B41JTypewriters3%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds3%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients3%
C08LCompositions of macromolecular compounds3%
C09JAdhesives3%
PatentTitleYear
9,828,938Piston for internal combustion engines20178,088,712'Reversible thermosensitive recording medium, reversible thermosensitive recording label, member, and image processing method'20127,993,732'Heat-sensitive pressure-sensitive adhesive and heat-sensitive adhesive material'20117,989,529'Thermosensitive adhesive composition, method of manufacturing the same and thermosensitive adhesive material'20117,585,813'Reversible thermosensitive recording medium, label and member, and image processing apparatus and 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'20087,432,223'Reversible thermosensitive recording medium, information storage material, reversible thermosensitive recording label, image processing method and image processing device'20087,422,996'Reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording member, image-processing apparatus and image-processing method'20087,338,919'Reversible thermosensitive recording medium and device, and image processing method and apparatus using the reversible thermosensitive recording medium'20087,238,642'Reversible thermosensitive recording medium, label and member, and, image processing apparatus and method'20077,071,142'Thermal recording material'20067,071,145'Thermosensitive recording material, and synthesis method of oligomer composition for the recording material'20066,878,671'Thermosensitive recording material, and synthesis method of oligomer composition for the recording material'20056,846,619'Dye dispersion liquid and thermosensitive recording material using the same'20056,816,146'Electrophoretic display liquid and electrophoretic display medium and device using the liquid having predetermined different volume medium particle diameters'20046,747,170'Thermosensitive recording material and color developer compound therefor'20046,710,015'Thermosensitive recording material'20046,693,621'Electrophoretic display method, display medium, liquid and particle for display medium, display apparatus, and reversible display material'20046,514,328'Marking ink composition and display medium using the same'20036,400,492'Electrophoretic display liquid, and electrophoretic display medium, method and device using the liquid'20026,395,680'Composition of aromatic carboxylic acid compounds and thermosensitive recording material using the same'20026,180,560'Thermosensitive recording material and color developer compound therefor'20015,945,517'Chemical-sensitization photoresist composition'19995,722,029'Image forming apparatus'19985,515,171'Remote-controlled copying apparatus having facsimile interface unit'19965,489,501'Recording composition'19965,478,600'Process for coating ferrous product with Al-Zn-Si alloy'19955,447,900'Thermosensitive recording material'19955,446,011'Thermosensitive recording material'19955,308,710'Al-Zn-Si base alloy coated product'19945,306,687'Thermosensitive recording material'19945,126,486'Phenolic compounds'19925,024,699'Leuco dyes and recording materials using the same'19914,985,345'Recording material'19914,981,970'Coloring phthalide compounds'19914,978,651'Phenolic compounds and recording material comprising the same'19904,940,691'Coloring phthalide compounds and recording materials using the compounds as coloring component'19904,925,828'Leuco dyes and recording materials using the same'19904,880,762'Coloring phthalide compounds, method of producing the compounds and recording materials using any of the compounds as coloring component'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–2009Patents assigned to RICOH KK (32)· patent assignee history
1989–1992Based in Gotemba-shi, JP· patent location history
1990–1996Based in Gotenba, JP· patent location history
1994–1995Patents assigned to DAIDO STEEL SHEET CORP (2)· patent assignee history
1994–1995Patents assigned to S TEM LTD (2)· patent assignee history
1996–1998Based in Tokyo, JP· patent location history
1999Patents assigned to DAITO CHEMIX CORP (1)· patent assignee history
2001–2017Based in Shizuoka, JP· patent location history
2004–2012Based in Mishima, JP· patent location history
2011–2012Patents assigned to RICOH CO LTD (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH KK | 32 | 1989–2009 |
| RICOH CO LTD | 3 | 2011–2012 |
| DAIDO STEEL SHEET CORP | 2 | 1994–1995 |
| S TEM LTD | 2 | 1994–1995 |
| DAITO CHEMIX CORP | 1 | 1999 |
Locations
| Location | Patents | Span |
|---|---|---|
| Mishima, JP | 12 | 2004–2012 |
| Shizuoka, JP | 10 | 2001–2017 |
| Gotenba, JP | 8 | 1990–1996 |
| Gotemba-shi, JP | 4 | 1989–1992 |
| Tokyo, JP | 2 | 1996–1998 |