Process cartridge and electrophotographic image forming apparatus
US-2026079442-A1 · Mar 19, 2026 · US
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Murakami Ryuta patents
Murakami Ryuta is listed as an inventor on 88 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Murakami Ryuta |
| Total patents | 88 |
| First publication | Jan 1, 2015 |
| Latest publication | Mar 19, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Prebiotic composition for butyric acid bacteria
US-2025344735-A1 · Nov 13, 2025 · US
Cartridge and image forming apparatus
US-12429811-B2 · Sep 30, 2025 · US
Photosensitive member unit, cartridge and electrophotographic image forming apparatus
US-2025199451-A1 · Jun 19, 2025 · US
Drum unit, drive transmission unit, cartridge and electrophotographic image forming apparatus
US-2025164918-A1 · May 22, 2025 · US
Cartridge and image forming apparatus
US-2025147461-A1 · May 8, 2025 · US
Drum unit, drive transmission unit, cartridge and electrophotographic image forming apparatus
US-12287600-B2 · Apr 29, 2025 · US
Image forming apparatus and cartridge
US-2025004393-A1 · Jan 2, 2025 · US
Photosensitive member unit, cartridge and electrophotographic image forming apparatus
US-2024411243-A1 · Dec 12, 2024 · US
Process cartridge and electrophotographic image forming apparatus
US-2024295851-A1 · Sep 5, 2024 · US
Recent patents
Latest publications not already listed above.
Cartridge and image forming apparatus
US-12072664-B2 · Aug 27, 2024 · US
Cartridge and image forming apparatus
US-12072667-B2 · Aug 27, 2024 · US
Drum unit, drive transmission unit, cartridge and electrophotographic image forming apparatus
US-12025941-B2 · Jul 2, 2024 · US
Process cartridge and electrophotographic image forming apparatus
US-12019392-B2 · Jun 25, 2024 · US
Cartridge and image forming apparatus
US-11927910-B2 · Mar 12, 2024 · US
Drum unit, drive transmission unit, cartridge and electrophotographic image forming apparatus
US-2024045364-A1 · Feb 8, 2024 · US
Prebiotic Composition for Butyric Acid Bacteria
US-2024016825-A1 · Jan 18, 2024 · US
Cartridge and image forming apparatus
US-2023418213-A1 · Dec 28, 2023 · US
Cartridge and image forming apparatus
US-2023400809-A1 · Dec 14, 2023 · US
Process cartridge and electrophotographic image forming apparatus
US-11803153-B2 · Oct 31, 2023 · US
Process cartridge and electrophotogaphic image forming apparatus
US-2023333511-A1 · Oct 19, 2023 · US
Electrophotographic image forming apparatus
US-11774905-B2 · Oct 3, 2023 · US
Process cartridge and electrophotographic image forming apparatus
US-11720055-B2 · Aug 8, 2023 · US
Cartridge and image forming apparatus
US-2023229108-A1 · Jul 20, 2023 · US
Cartridge and image forming apparatus
US-11703794-B2 · Jul 18, 2023 · US
Process cartridge and electrophotographic image forming apparatus
US-2023195032-A1 · Jun 22, 2023 · US
Cartridge and image forming apparatus
US-2023048100-A1 · Feb 16, 2023 · US
Photosensitive member unit, cartridge and electrophotographic image forming apparatus
US-2023032591-A1 · Feb 2, 2023 · US
Prebiotic composition for butyric acid bacteria
US-2022386667-A1 · Dec 8, 2022 · US
Cartridge and image forming apparatus
US-11449001-B2 · Sep 20, 2022 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Canon Kk | 84 |
| Morinaga Milk Industry Co Ltd | 4 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| G03G21/1647 | 44 |
| G03G21/186 | 41 |
| G03G15/757 | 41 |
| G03G21/1857 | 40 |
| G03G2221/1657 | 37 |