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Denis E. Hassick
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Monroeville, PA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Inorganic composition, process of preparation and method of use
Patent number
6,656,377
Issue date
Dec 2, 2003
Calgon Corporation
Denis E. Hassick
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Inorganic composition, process of preparation and method of use
Patent number
6,306,308
Issue date
Oct 23, 2001
Nalco Chemical Company
Denis E. Hassick
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Composition of ferric chloride and a dialkyl diallyl ammonium polym...
Patent number
6,184,257
Issue date
Feb 6, 2001
Calgon Corporation
Denis E. Hassick
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Method for reducing turbidity in laundry waste water
Patent number
5,948,270
Issue date
Sep 7, 1999
Calgon Corporation
Denis E. Hassick
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Fertilizer and method for preparing the same
Patent number
5,785,730
Issue date
Jul 28, 1998
Calgon Corporation
Joseph P. Miknevich
C05 - FERTILISERS MANUFACTURE THEREOF
Information
Patent Grant
Separation of raw agricultural waste
Patent number
5,776,350
Issue date
Jul 7, 1998
Calgon Corporation
Joseph P. Miknevich
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Method for reducing turbidity in laundry waste water
Patent number
5,624,570
Issue date
Apr 29, 1997
Calgon Corporation
Denis E. Hassick
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Polysalt compositions and the use thereof for treating an oil and w...
Patent number
5,330,656
Issue date
Jul 19, 1994
Calgon Corporation
Denis E. Hassick
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Method for treating deink wastes using melamine aldehyde-type polymers
Patent number
5,286,390
Issue date
Feb 15, 1994
Calgon Corporation
Ross T. Gray
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Flocculation of suspended solids from aqueous solutions
Patent number
5,035,808
Issue date
Jul 30, 1991
Calgon Corporation
Denis E. Hassick
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Flocculation of suspended solids from aqueous solutions
Patent number
4,800,039
Issue date
Jan 24, 1989
Calgon Corporation
Denis E. Hassick
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Flocculation of suspended solids from aqueous solutions
Patent number
4,746,457
Issue date
May 24, 1988
Calgon Corporation
Denis E. Hassick
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Patents Applications
last 30 patents
Information
Patent Application
Inorganic composition, process of preparation and method of use
Publication number
20040014989
Publication date
Jan 22, 2004
Denis E. Hassick
C01 - INORGANIC CHEMISTRY
Information
Patent Application
Inorganic composition, process of preparation and method of use
Publication number
20020130087
Publication date
Sep 19, 2002
Denis E. Hassick
C01 - INORGANIC CHEMISTRY