Developing cartridge having a sheet member provided at end portion of a developing roller
US-12554214-B2 · Feb 17, 2026 · US
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Numata Tetsuya patents
Numata Tetsuya is listed as an inventor on 106 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Numata Tetsuya |
| Total patents | 106 |
| First publication | Mar 24, 2015 |
| Latest publication | Feb 17, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Cartridge and image forming apparatus
US-12487556-B2 · Dec 2, 2025 · US
Cartridge and image forming apparatus
US-2025334924-A1 · Oct 30, 2025 · US
Cartridge including a developer storage unit for storing developer
US-12405565-B2 · Sep 2, 2025 · US
Development device, process cartridge, and image forming apparatus
US-2025102996-A1 · Mar 27, 2025 · US
Cartridge used in image forming apparatus
US-2025044721-A1 · Feb 6, 2025 · US
Development device, process cartridge, and image forming apparatus
US-2025004417-A1 · Jan 2, 2025 · US
Cartridge and image forming apparatus
US-12158722-B2 · Dec 3, 2024 · US
Cartridge used in image forming apparatus
US-12153355-B2 · Nov 26, 2024 · US
Cartridge and image forming apparatus
US-2024385570-A1 · Nov 21, 2024 · US
Recent patents
Latest publications not already listed above.
Development device, process cartridge, and image forming apparatus
US-12117763-B2 · Oct 15, 2024 · US
Process cartridge and developing cartridge
US-2024061362-A1 · Feb 22, 2024 · US
Cartridge and developing cartridge including a frame and sheet member provided at end side of the frame
US-11841647-B2 · Dec 12, 2023 · US
Cartridge
US-2023367258-A1 · Nov 16, 2023 · US
Cartridge and image forming apparatus
US-2023350339-A1 · Nov 2, 2023 · US
Cartridge used in image forming apparatus
US-2023314982-A1 · Oct 5, 2023 · US
Development device, process cartridge, and image forming apparatus
US-2023315002-A1 · Oct 5, 2023 · US
Cartridge
US-11762326-B2 · Sep 19, 2023 · US
Cartridge and image forming apparatus
US-11733644-B2 · Aug 22, 2023 · US
Process cartridge for image forming apparatus
US-D993925-S · Aug 1, 2023 · US
Cartridge used in image forming apparatus
US-11709438-B2 · Jul 25, 2023 · US
Development device, process cartridge, and image forming apparatus
US-11703795-B2 · Jul 18, 2023 · US
Process cartridge and developing cartridge
US-2023013196-A1 · Jan 19, 2023 · US
Cartridge
US-2022382210-A1 · Dec 1, 2022 · US
Cartridge having toner removing sheet in contact with photosensitive drum
US-11480916-B2 · Oct 25, 2022 · US
Cartridge
US-11435689-B2 · Sep 6, 2022 · US
Cartridge used in image forming apparatus
US-2022269192-A1 · Aug 25, 2022 · US
Development device, process cartridge, and image forming apparatus
US-2022236687-A1 · Jul 28, 2022 · US
Cartridge used in image forming apparatus
US-11294299-B2 · Apr 5, 2022 · US
Development device, process cartridge, and image forming apparatus
US-11287772-B2 · Mar 29, 2022 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Canon Kk | 106 |
| Nakamura Yuuki | 1 |
| Numata Tetsuya | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| G03G21/1814 | 45 |
| G03G21/1853 | 35 |
| G03G21/1821 | 34 |
| G03G21/1676 | 32 |
| G03G21/181 | 23 |