Denis E. Hassick — 12 Patents at Calgon

Denis E. Hassick has been granted 12 US patents while listed as an inventor at Calgon. The first was granted in 1988 and the most recent in December 2003. Denis E. Hassick ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list Denis E. Hassick in Monroeville, PA, US.

Patents per Year

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Showing 1–12 of 12 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
6656377	Inorganic composition, process of preparation and method of use	Michael P. Flaherty, Pamela J. Dotter, Robert J. Guerrini	2003-12-02	$100,348,000
6306308	Inorganic composition, process of preparation and method of use	Michael P. Flaherty, Pamela J. Dotter, Robert J. Guerrini	2001-10-23
6184257	Composition of ferric chloride and a dialkyl diallyl ammonium polymer and process of preparing the same	—	2001-02-06	$683,227,000
5948270	Method for reducing turbidity in laundry waste water	—	1999-09-07	$189,941,000
5785730	Fertilizer and method for preparing the same	Joseph P. Miknevich	1998-07-28	$168,913,000
5776350	Separation of raw agricultural waste	Joseph P. Miknevich	1998-07-07	$62,982,000
5624570	Method for reducing turbidity in laundry waste water	—	1997-04-29	$80,456,000
5330656	Polysalt compositions and the use thereof for treating an oil and water system	—	1994-07-19	$43,444,000
5286390	Method for treating deink wastes using melamine aldehyde-type polymers	Ross T. Gray	1994-02-15	$47,511,000
5035808	Flocculation of suspended solids from aqueous solutions	Joseph P. Miknevich	1991-07-30	$48,055,000
4800039	Flocculation of suspended solids from aqueous solutions	Joseph P. Miknevich	1989-01-24	$14,093,000
4746457	Flocculation of suspended solids from aqueous solutions	Joseph P. Miknevich	1988-05-24	$32,857,000

Denis E. Hassick — 12 Patents

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