Heinrich Gresch — 18 Patents at Unknown

Heinrich Gresch has been granted 18 US patents while listed as an inventor at Unknown. The first was granted in 1984 and the most recent in June 1993. Heinrich Gresch ranks #245,716 of 4,157,543 US inventors in our database (top 5.9%). Patent records list Heinrich Gresch in Wickede (Ruhr), DE.

Issued Patents All Time

Showing 1–18 of 18 patents

Patent #	Title	Co-Inventors	Date
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

Heinrich Gresch — 18 Patents

Issued Patents All Time

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