Durst Phototechnik AG
19Patents
7Active
19Granted
37Portfolio score
Filing activity: Feb 24, 1986 → Jul 5, 2017 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5823083A | Gripping apparatus for reel material | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4922276A | Continuous processing machine for photographic sheet material | Physics | 22 | Expired |
| US7347540B2 | Inkjet printing device | Performing Operations; Transporting | 7 | Expired |
| US4961087A | Diaphragm adjusting arrangement in a photographic enlarging or copying apparatus having several lenses with an adjustable diaphragm | Physics | 7 | Expired |
| US4678319A | Measuring device for selecting the filter in photographic enlarging or copying apparatuses | Physics | 4 | Expired |
| US8322833B2 | Ink supply system for an inkjet printer | Performing Operations; Transporting | 2 | Active |
| US4728992A | Process and a device for adjusting a photographic color enlarging or copying apparatus | Physics | 2 | Expired |
| US4682883A | Photographic color enlarging or copying apparatus | Physics | 2 | Expired |
| US5365306A | Method and apparatus for regulation of the amount of printing light in photographic enlarging or printing devices | Physics | 2 | Expired |
| US8141981B2 | Inkjet printing device and method for printing multi-coloured images | Electricity | 2 | Active |
| US8764148B2 | Inkjet printing device and method for printing multi-colored images | Electricity | 2 | Active |
| US5128710A | Instrument for the point-by-point measuring of color originals to be copied | Physics | 2 | Expired |
| US4920378A | Method and a measuring apparatus for determining the exposure time in photographic copying | Physics | 1 | Expired |
| US7926688B2 | Tension-controlled web processing machine and method | Emerging Cross-Sectional Technologies | 0 | Active |
| US9994029B2 | Print head for an ink jet printer | Performing Operations; Transporting | 0 | Active |
| US5634608A | Take-up apparatus for reel material | Physics | 0 | Expired |
| US6879371B2 | Device and method for illuminating, developing and cutting photographic material in the form of a roll | Physics | 0 | Expired |
| US10071548B2 | Printing module having a printing head that can be exchanged on the front side | Performing Operations; Transporting | 0 | Active |
| US9751313B2 | Print head for an ink jet printer | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.