Inventor
Katsufumi Kumano
Inventor
Tsuruga, JP
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y10Tprimary
Y10TTechnical subjects covered by former us classification23%
C08JWorking-up18%
B29CShaping or joining of plastics14%
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. inserts9%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
B41MPrinting, duplicating, marking, or copying processes5%
G02BOptical elements, systems or apparatus5%
G03CPhotosensitive materials for photographic purposes5%
G03GElectrography5%
PatentTitleYear
7,715,760'Charging device, and process cartridge and image forming apparatus using the same'20107,198,857'Polyester film for forming'20076,649,260'Optical coating film'20036,323,308'Aliphatic polyester film'20015,422,175'Void-containing composite film of polyester type'19955,084,334'Void-containing polyester-type film, and its laminate'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–2007Patents assigned to TOYO BOSEKI (5)· patent assignee history
1992–2001Based in Ohtsu, JP· patent location history
1995Based in Otsu, JP· patent location history
2003–2007Based in Tsuruga, JP· patent location history
2010Patents assigned to RICOH KK (1)· patent assignee history
2010Based in Yokohama, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TOYO BOSEKI | 5 | 1992–2007 |
| RICOH KK | 1 | 2010 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tsuruga, JP | 2 | 2003–2007 |
| Ohtsu, JP | 2 | 1992–2001 |
| Yokohama, JP | 1 | 2010 |
| Otsu, JP | 1 | 1995 |