Mita Industrial Co., Ltd.
1,354Patents
0Active
1,354Granted
46Portfolio score
Filing activity: Aug 31, 1970 → Mar 31, 2000
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5184181A | Cartridge discriminating system | Physics | 103 | Expired |
| US5210574A | Photosensitive drum body-mounting mechanism including a drive coupling member with a coupling protrusion adapted to bite into the inner surface of the mechanism's photosensitive drum | Physics | 103 | Expired |
| US4873549A | Device for detecting the life of an image forming process unit, opening of a seal of the unit and attachment of the unit to an image forming apparatus | Physics | 95 | Expired |
| US5764816A | Image forming apparatus capable of converting the resolution | Electricity | 93 | Expired |
| US4607734A | Power transmitting device in a copying machine | Mechanical Engineering; Lighting; Heating | 92 | Expired |
| US5467355A | Image forming apparatus provided with self-diagnosis system | Emerging Cross-Sectional Technologies | 91 | Expired |
| US5993101A | Shaft coupling and shaft coupling structure for use in image forming apparatus | Emerging Cross-Sectional Technologies | 90 | Expired |
| US5771107A | Image processor with image edge emphasizing capability | Electricity | 67 | Expired |
| US5752128A | Image forming apparatus with contract renewal device | Physics | 65 | Expired |
| US5312713A | Information recording medium and information recording method | Emerging Cross-Sectional Technologies | 63 | Expired |
| US4963939A | Cartridge discriminating system | Physics | 62 | Expired |
| US5028966A | Image-forming machine | Physics | 61 | Expired |
| US4974020A | Removable developing units for a copying machine and display for indicating the useful life of the machine | Physics | 61 | Expired |
| US6145828A | Sheet conveyor single-handed parting engagement mechanism | Physics | 60 | Expired |
| US5241353A | Paper-discharging tray | Performing Operations; Transporting | 58 | Expired |
| US5170185A | Image forming apparatus | Physics | 54 | Expired |
| US5091750A | Cartridge unit | Physics | 52 | Expired |
| US5708909A | Equipment management system | Physics | 52 | Expired |
| US5329307A | Image forming apparatus and method of controlling image forming apparatus | Physics | 51 | Expired |
| US5381404A | Packet-switching communication network and method of design | Electricity | 49 | Expired |
| US5873009A | Equipment management system that issues a warning when the lifetime of a component has been exceeded and disables the warning when such a warning is to be generated for a different component | Physics | 49 | Expired |
| US4566908A | Azoic pigments having a silica core | Physics | 44 | Expired |
| US4768055A | Image forming machine having a toner recycling unit | Physics | 44 | Expired |
| USD399524S | Printer | General | 43 | Expired |
| US4501485A | Card-operated copying machine | Physics | 42 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.