Inventor
Yasuhide Ohkubo
Inventor
Osaka, JP
Overview
Patents· 29 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography56%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables36%
B41JTypewriters8%
PatentTitleYear
11,054,762Powder container, process cartridge, and image forming apparatus202110,816,916Toner conveyance device with a film attached to a wall surrounding a conveyance screw20209,500,992'Developing device having a powder conveyor, process cartridge, and image forming apparatus including the same'20169,261,816'Developer amount detector, developing device, process unit, and image forming apparatus'20169,229,372'Developing device, process cartridge, and image forming apparatus'20169,201,393'Toner container, process cartridge, and image forming apparatus'20158,953,975'Seal and image forming device including a seal'20158,874,021'Media guide mechanism, fixing device and image forming apparatus incorporating same'20148,807,552'Image forming apparatus, optional sheet feeder, and base plate member'20148,678,371'Manual sheet-feeding device and image forming apparatus'20148,561,979'Open/close mechanism for paper tray for use in image forming apparatus'20138,356,813'Paper feeder assembly for image forming apparatus, and image forming apparatus incorporating the same'20138,320,798'Sheet conveying device and image forming apparatus'20128,256,769'Feeding device and image forming apparatus'20128,260,187'Image forming device'20128,240,657'Sheet feeding device and image forming apparatus'20128,118,296'Open/close mechanism for paper tray for use in image forming apparatus'20128,070,159'Switchback mechanism and image forming apparatus'20118,045,888'Sheet conveying device and image forming apparatus'20117,992,860'Sheet feeding device, image forming apparatus, and sheet feeding method'20117,963,520'Sheet loading device, sheet conveying device, and image forming apparatus'20117,954,814'Feeding device and image forming apparatus'20117,918,451'Switchback mechanism and image forming apparatus'20117,878,725'Image forming apparatus having removable units'20117,784,780'Manual sheet-feeding device and image forming apparatus'20107,731,182'Sliding mechanism, sheet guide, sheet loading device, and image forming apparatus'20107,731,170'Open/close mechanism for paper tray for use in image forming apparatus'20107,677,555'Sheet conveying apparatus and image forming apparatus with vibration applying unit'20107,676,176'Image forming apparatus including cover and supporting unit'2010Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2010–2016Based in Osaka, JP· patent location history
2011–2021Patents assigned to RICOH CO LTD (24)· patent assignee history
2011–2021Patents assigned to OHKUBO YASUHIDE (18)· patent assignee history
2011–2014Patents assigned to KIMURA IPPEI (9)· patent assignee history
2011–2014Patents assigned to FUJIWARA HIROSHI (8)· patent assignee history
2011–2014Patents assigned to HONDA HARUYUKI (8)· patent assignee history
2015–2016Based in Toyonaka, JP· patent location history
2020Based in Kanagawa, JP· patent location history
2021Based in Yokohama-shi, Kanagawa, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH CO LTD | 24 | 2011–2021 |
| OHKUBO YASUHIDEself | 18 | 2011–2021 |
| KIMURA IPPEI | 9 | 2011–2014 |
| FUJIWARA HIROSHI | 8 | 2011–2014 |
| HONDA HARUYUKI | 8 | 2011–2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Osaka, JP | 25 | 2010–2016 |
| Toyonaka, JP | 2 | 2015–2016 |
| Yokohama-shi, Kanagawa, JP | 1 | 2021 |
| Kanagawa, JP | 1 | 2020 |