ZUMBACH ELECTRONIC AG
26Patents
3Active
26Granted
35Portfolio score
Filing activity: Mar 21, 1977 → May 9, 2014 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5383022A | Method and apparatus for measuring the dimensions of an object | Physics | 60 | Expired |
| US7140253B2 | Device for the ultrasound measuring of cylindrical test models | Physics | 45 | Expired |
| US4641525A | Method and apparatus for checking the wall thickness of a layer | Performing Operations; Transporting | 14 | Expired |
| US4792695A | Contact-free measuring apparatus having an F-theta-corrected, catadioptric objective and method for using the same | Physics | 13 | Expired |
| US5302904A | Method of detecting insulation faults and spark tester for implementing the method | Physics | 13 | Expired |
| US4424480A | Process for the measurement of the specific capacity of a cable and a device for carrying out the process | Physics | 11 | Expired |
| US4181961A | Process for the measurement of absolute values by means of a non-linearly working measured value emitter, and a measuring device for carrying out the process | Physics | 8 | Expired |
| US4416541A | Process and device for the measurement of a physical quantity of an extruded element | Performing Operations; Transporting | 8 | Expired |
| US4137639A | Device for the measurement of the wall thickness of tubes | Physics | 6 | Expired |
| US4832426A | Process for the production of a telecentric light beam, device for carrying out this process and process for the production of an HOE | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4616931A | Process and device for the contact free determination of the movement of an object | Physics | 6 | Expired |
| US4157503A | Apparatus and method for testing the thickness of the wall of a moving tube leaving an extruder | Physics | 6 | Expired |
| US4117402A | Apparatus for measuring the wall thickness of a moving tube wherein at least one measuring body inside the tube may be lifted off the tube by the motion of the tube | Physics | 5 | Expired |
| US4444457A | Process and device for the production of a telecentric light beam and use of the process | Physics | 4 | Expired |
| US5795531A | Method and apparatus for the cross-sectional measurement of electric insulated conductors | Performing Operations; Transporting | 4 | Expired |
| US5518681A | Method and apparatus for the cross-sectional measurement of electric insulated conductors | Performing Operations; Transporting | 3 | Expired |
| US4955694A | Process for producing HOE's for use in combination to produce a telecentric beam | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7068359B2 | Contactless system for measuring centricity and diameter | Physics | 2 | Expired |
| US5976449A | Method and apparatus for the cross-sectional measurement of electric insulated conductors | Performing Operations; Transporting | 1 | Expired |
| US8243284B2 | Method for measuring the roundness of round profiles | Performing Operations; Transporting | 1 | Active |
| US4094605A | Apparatus for producing identical sheets of material having a number of representations thereon | Emerging Cross-Sectional Technologies | 0 | Expired |
| US6678063B2 | Measuring device for reinforcing steel rods for concrete | Physics | 0 | Expired |
| US7675631B2 | Holographic optical element | Physics | 0 | Active |
| US5418616A | Method and apparatus for optically detecting the dimensions of an object and use of the method | Physics | 0 | Expired |
| US10232420B2 | Method for determining the stamping quality of profiled bar material | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.