Michael Namhoon Kim

US Patent:

60543108, Apr 25, 2000

Filed:

Nov 18, 1998

Appl. No.:

9/195113

Inventors:

Michael H. Kim - Ellicott City MD
Joseph J. DeFrank - Bel Air MD

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

C07C 102

US Classification:

4352524

Abstract:

A process for biodegradation of an amine compound by contacting the amine mpound with a consortium of microorganisms effective for consuming carbon and nitrogen components of the amine compound under aerobic conditions, wherein the enzymatically degraded the amine compound forms an ammonia residue, nitrifying the ammonia residue under aerobic conditions, wherein the ammonia residue forms nitrite and nitrate residues and denitrifying the compound with the addition of a supplementary carbon source under anoxic conditions. The amine compound may be DS2 or similar amine structures. The microorganisms include Bacillus circulans, the genera Nitrosomonas, and the genera Nitrobacter. The process is a continuous-fed process in a bioreactor. A composition of microorganisms comprising Bacillus circulans, the genera Nitrosomonas, the genera Nitrobacter, and facultative heterotrophic denitrifiers effective to degrade DS2 also is disclosed.

US Patent:

47793023, Oct 25, 1988

Filed:

Jan 4, 1988

Appl. No.:

7/140654

Inventors:

Michael C. Kim - Ellicott City MD

International Classification:

A46B 1104
B05C 1700

US Classification:

15117

Abstract:

An elongate brush with handle forming a "T"-shape, has a plurality of cups along a top portion, all facing generally toward an end of the elongate brush so that with the elongate brush vertical it can be used for stirring asphalt-type compounds in buckets and for dipping out predeterminable quantities and spreading them, with or without use of a rubber spreader fixed parallel with the elongate brush. The plurality of cups can be made as a unit and need only cover about half the length of the elongate brush from the handle to the end opposite the end that they face. Inclined brush shape is disclosed to facilitate pouring.