Inventor
Sumio Kamoi
Inventor
Tokyo, JP
Overview
Patents· 18 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Fprimary
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein22%
G03GElectrography19%
Y10TTechnical subjects covered by former us classification11%
H01FMagnets8%
B29CShaping or joining of plastics5%
B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts5%
B29LIndexing scheme associated with subclass b29c, relating to particular articles5%
C09KMaterials for miscellaneous applications, not provided for elsewhere5%
B24BMachines, devices, or processes for grinding or polishing3%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds3%
PatentTitleYear
8,175,501'Development roller including a development sleeve, surface treatment device that treats an outer surface of the development sleeve and wire member that roughens the outer surface of the development sleeve'20128,047,940'Heat-resistant resin belt, manufacturing method thereof and image forming apparatus'20118,038,819'Heat-resistant resin endless belt producing method'20117,572,388'Magnet compound material to be compression molded, a molded elongate magnetic, a magnet roller, a developing agent-carrying body, a developing apparatus and an image-forming apparatus'20097,366,454'Long magnet, production method thereof, magnet roller and image forming device'20087,352,983'Development magnet roller, development device, process cartridge and image forming apparatus'20087,203,450'Developing roller, developing apparatus, process cartridge, and image formation apparatus'20077,189,338'Image forming apparatus and developing device therefor'20077,027,761'Developing device and an image forming apparatus including the same'20066,697,593'Developing device using a developing roller and image forming apparatus including the same'20046,379,759'Sealing agent for liquid crystal display and liquid crystal display using the sealing agent'20026,262,787'Polymer film liquid crystal display device'20015,566,013'Liquid crystal display apparatus which prevents bubbles with a spacer density of 201 to 800 mm.sup.2'19965,513,026'Method of producing a liquid crystal display with a spacer'19965,044,733'Super twisted nematic liquid crystal display device having the standard deviation of the spherical grains being not more than 3% and the dispersion quantity of the spherical grains being 100-200 grains/mm.sup.2'19914,984,873'Liquid crystal display device'19914,793,691'Liquid crystal color display device'19884,470,668'Reaction setting, polymer, sealing material for liquid crystal displays'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984–2009Patents assigned to RICOH KK (15)· patent assignee history
1984Based in Funabashi, JP· patent location history
1988Based in Chiba, JP· patent location history
1991Based in Kawasaki, JP· patent location history
1996Based in Yokohama, JP· patent location history
2001–2012Based in Tokyo, JP· patent location history
2011–2012Patents assigned to RICOH CO LTD (3)· patent assignee history
2012Patents assigned to ABE HIROYA (1)· patent assignee history
2012Patents assigned to IMAMURA TSUYOSHI (1)· patent assignee history
2012Patents assigned to KAMIYA NORIYUKI (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH KK | 15 | 1984–2009 |
| RICOH CO LTD | 3 | 2011–2012 |
| ABE HIROYA | 1 | 2012 |
| IMAMURA TSUYOSHI | 1 | 2012 |
| KAMIYA NORIYUKI | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 12 | 2001–2012 |
| Yokohama, JP | 2 | 1996 |
| Kawasaki, JP | 2 | 1991 |
| Chiba, JP | 1 | 1988 |
| Funabashi, JP | 1 | 1984 |