| 5223325 |
Filter medium |
Heinz Holter, Heinrich Igelbuscher, Heribert Dewert |
1993-06-29 |
| 5066466 |
Apparatus for indicating the presence of toxic substances in air that is supplied to a personnel-occupied space |
Heinz Holter, Heinrich Igelbuscher, Heribert Dewert, Hanns Rump |
1991-11-19 |
| 5015451 |
Process, filter and device for making available high-quality breathing air |
Heinz Holter, Heinrich Igelbuscher |
1991-05-14 |
| 4941824 |
Method of and apparatus for cooling and cleaning the roof and environs of a coke oven |
Heinz Holter, Heinrich Igelbuscher |
1990-07-17 |
| 4936881 |
Cooling tower for steam-powered plants |
Sigurd Jorzyk, Gerhard Scholl, Heinz Holter, Heinrich Igelbuscher, Heribert Dewert |
1990-06-26 |
| 4886000 |
Method of treating waste |
Heinz Holter, Heinrich Igelbuscher, Heribert Dewert |
1989-12-12 |
| 4885011 |
Cooling tower for the cooling water that drains/ from the condensor of a steam generator or the condensors/ of a plurality of steam generators |
Sigurd Jorzyk, Gerhard Scholl, Heinz Holter, Heinrich Igelbuscher, Heribert Dewert |
1989-12-05 |
| 4882287 |
Process for indicating the presence of toxic substances in air that is supplied to a personnel-occupied space |
Heinz Holter, Heinrich Igelbuscher, Heribert Dewert, Hanns Rump |
1989-11-21 |
| 4875406 |
Device for detecting different pollutants in gas streams |
Heinz Holter, Heinrich Igelbuscher, Heribert Dewert, Peter Burggraf |
1989-10-24 |
| 4802573 |
Process for wet quenching of coke |
Heinz Holter, Heinrich Igelbuscher, Heribert Dewert |
1989-02-07 |
| 4784810 |
Smoke gas exhaust by way of a cooling tower |
Sigurd Jorzyk, Gerhard Scholl, Heinz Holter, Heinrich Igelbuscher, Heribert Dewert |
1988-11-15 |
| 4744289 |
Cab for occupancy by individuals |
Heinz Holter, Heinrich Igelbuscher, Heribert Dewert, Joachim Tischendorf |
1988-05-17 |
| 4742763 |
Device for the detection of noxious substances in the air supplied to a compartment occupied by people |
Heinz Holter, Heinrich Igelbuscher, Heribert Dewert |
1988-05-10 |
| 4733605 |
Process and device for purifying polluted air |
Heinz Holter, Heinrich Igelbuscher, Heribert Dewert |
1988-03-29 |
| 4670234 |
Process for stripping nitrogen oxides and sulphur oxides as well as optionally other noxious elements of flue gas from combustion plants |
Heinz Holter, Heinrich Igelbuscher, Heribert Dewert |
1987-06-02 |
| 4551304 |
Method of cleaning air loaded with pollutants |
Heinz Holter, Heinrich Igelbuscher, Heribert Dewert |
1985-11-05 |
| 4530817 |
Apparatus for the protection of air fed to a labor-protection or vehicle compartment |
Heinz Holter, Heinrich Igelbuscher, Heribert Dewert |
1985-07-23 |
| 4451435 |
Apparatus for cleaning air loaded with pollutants |
Heinz Holter, Heinrich Igelbuscher, Heribert Dewert |
1984-05-29 |