Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5900128 | Electrochemical sensor | Walter Gumbrecht, Reinhard Kress | 1999-05-04 |
| 5385659 | Reference electrode | Walter Gumbrecht, Wolfgang Schelter | 1995-01-31 |
| 4863694 | Chemically sensitive component | Heinrich Kimmel, Walter Gumbrecht | 1989-09-05 |
| 4841974 | Apparatus and method for the examination of a liquid medium | Walter Gumbrecht, Wolfgang Schelter, Peter Hobel | 1989-06-27 |
| 4752447 | Optical filter with reversible color change | Heinrich Kimmel, Walter Gumbrecht | 1988-06-21 |
| 4450896 | Method and apparatus for heat exchange at solid surfaces | Heinrich Opitz, Gerd Urban, Wilfried Turk | 1984-05-29 |
| 4384039 | Method for recording local boundary-layer flow-line directions in liquid media | Heinrich Opitz, Gerd Urban | 1983-05-17 |
| 4350757 | Method for making visible residual moisture distributions in photographic wet film layers subjected to an oncoming flow | Gert Mages, Heinrich Opitz | 1982-09-21 |
| 4346166 | Method of making families of steady-state heat transfer coefficient curves visible by photochemical means | Heinrich Optiz | 1982-08-24 |
| 4259431 | Method for making stationary heat transfer coefficient fields visible by photochemical means | Heinrich Opitz | 1981-03-31 |
| 4250249 | Method for developing residual-moisture photographs | — | 1981-02-10 |