Pako Corporation
148Patents
0Active
148Granted
39Portfolio score
Filing activity: Mar 27, 1975 → Sep 20, 1988
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4168120A | Automatic exposure corrections for photographic printer | Physics | 38 | Expired |
| US4156170A | Stepper motor control | Physics | 33 | Expired |
| US4114349A | Automatic sorting, conveying and packing mechanism for photographic prints | Performing Operations; Transporting | 27 | Expired |
| US4139978A | Automatic photographic print and film packaging mechanism | Physics | 24 | Expired |
| US4506969A | Film-width and transmittance scanner system | Physics | 24 | Expired |
| US4293211A | Automatic replenisher control system | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4160153A | Duty cycle shared proportional temperature control | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4057818A | Automatic replenisher system for a photographic processor | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4221144A | Paper feed control for automatic photographic paper cutter | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4288205A | Variable volume peristaltic pump | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4294537A | Photographic reprint system with information display | Physics | 21 | Expired |
| US4371819A | Pulse width modulation speed control | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4161365A | Neghold assembly for photographic printer | Physics | 21 | Expired |
| US4402590A | Automatic replenisher control for multiprocess photographic processor | Physics | 21 | Expired |
| US4345754A | Photographic stacking device | Performing Operations; Transporting | 19 | Expired |
| US4532500A | Web tension and break sensor system for photosensitive web processors | Physics | 19 | Expired |
| US4128325A | Automatic density measurement calibration for photographic replenishment system | Physics | 19 | Expired |
| US4543771A | Photographic slide mounter | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4104670A | Automatic replenisher control | Physics | 18 | Expired |
| US4286868A | Photographic printer with automatic sensor calibration | Physics | 18 | Expired |
| US4138607A | Dual priority temperature control | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4139980A | Automatic film conveying and packing mechanism | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4300828A | Photosensitive sheet processor | Physics | 17 | Expired |
| US4332456A | Graphic arts processor having switch selectable replenishment control information matrices | Physics | 16 | Expired |
| US4372666A | Automatic variable-quantity/variable-time anti-oxidation replenisher control system | Emerging Cross-Sectional Technologies | 16 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.