Inventor
Tohru Suganuma
Inventor
Numazu, JP
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography83%
B02CCrushing, pulverising, or disintegrating in general8%
B07BSeparating solids from solids by sieving, screening, sifting or by using gas currents8%
PatentTitleYear
10,969,708Developing device, process cartridge, and image forming apparatus202110,474,051Carrier for developer of electrostatic latent image, two-component developer, replenishing developer, image forming apparatus, and toner stored unit201910,444,651Carrier, developer, supplemental developer, image forming apparatus, image forming method, and process cartridge201910,234,783Carrier, developer, image forming apparatus, developer stored unit, and image forming method201910,025,214Carrier, developing agent, image forming apparatus, image forming method, replenishment toner, and process cartridge20188,012,662'Method of manufacturing toner'20117,438,245'Milling and classifying apparatus, collision mill, air classifier, toner, and method for producing toner'20087,318,990'Toner, developer, image forming method, image forming apparatus and toner manufacturing method'20086,319,646'Carrier for electrophotographic developer, method for manufacturing, developer, container including the developer, and image forming apparatus using the developer wherein the carrier satisfies the relationship 1.0.ltoreq.C2/C1.ltoreq.1.3'20015,652,079'Carrier for dry two-component developer and method of producing the same'1997Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–2008Patents assigned to RICOH KK (3)· patent assignee history
1997–2011Based in Numazu, JP· patent location history
2011–2021Patents assigned to RICOH CO LTD (6)· patent assignee history
2018–2019Patents assigned to SAKATA KOICHI (4)· patent assignee history
2018–2019Patents assigned to SUGANUMA TOHRU (4)· patent assignee history
2018–2019Patents assigned to NAGAYAMA MASASHI (3)· patent assignee history
2018–2019Based in Shizuoka, JP· patent location history
2021Based in Kanagawa, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH CO LTD | 6 | 2011–2021 |
| SAKATA KOICHI | 4 | 2018–2019 |
| SUGANUMA TOHRUself | 4 | 2018–2019 |
| NAGAYAMA MASASHI | 3 | 2018–2019 |
| RICOH KK | 3 | 1997–2008 |
Locations
| Location | Patents | Span |
|---|---|---|
| Numazu, JP | 5 | 1997–2011 |
| Shizuoka, JP | 4 | 2018–2019 |
| Kanagawa, JP | 1 | 2021 |