Conrad Timothy Harwell

US Patent:

6579831, Jun 17, 2003

Filed:

Jan 30, 2002

Appl. No.:

10/060540

Inventors:

Conrad T. Harwell - Lowell IN

Assignee:

Nufarms Americas Inc - Burr Ridge IL

International Classification:

A01N 4302

US Classification:

504127

Abstract:

A concentrated, liquid herbicidal composition is disclosed. The composition contains a low volatile ester of a first herbicide, a free acid form of a second herbicide, and an aprotic solvent. A granular herbicide containing a solid substrate having the concentrated, liquid herbicidal composition applied to surfaces of the substrate also is disclosed.

US Patent:

6825151, Nov 30, 2004

Filed:

Apr 22, 2003

Appl. No.:

10/420298

Inventors:

Conrad T. Harwell - Lowell IN

Assignee:

Nufarm Americas Inc. - Burr Ridge IL

International Classification:

A01N 4302

US Classification:

504127, 5041161, 504128, 504130, 504135, 504142, 504144, 504145, 504146, 504147

Abstract:

A concentrated, liquid herbicidal composition containing a low volatile ester of a first herbicide, a solid second herbicide comprising fluroxypyr in the form of a free acid and/or a solid ester, and an aprotic solvent is disclosed. A granular herbicide containing a solid substrate having the concentrated, liquid herbicidal composition applied to the substrate also is disclosed.

US Patent:

8133848, Mar 13, 2012

Filed:

Sep 3, 2008

Appl. No.:

12/230711

Inventors:

Geoff Quick - Barr Ridge IL, US
Conrad Harwell - Sanford NC, US
James Fickle - Chapel Hill NC, US

Assignee:

Nufarm Americas Inc. - Burr Ridge IL

International Classification:

A01N 57/10
A01P 13/00

US Classification:

504206

Abstract:

A herbicidal composition comprising glyphosate in the form of a mixture of the potassium and ammonium salts.

US Patent:

52665534, Nov 30, 1993

Filed:

Oct 21, 1991

Appl. No.:

7/779896

Inventors:

James K. Champion - Palos Park IL
Conrad T. Harwell - Lowell IN

Assignee:

Riverdale Chemical Company - Glenwood IL

International Classification:

A01N 2512
A01N 3710
A01N 5704
A01N 4372

US Classification:

504206

Abstract:

A method of manufacturing a solid, water-soluble herbicidal composition comprising a water-soluble salt of a herbicidal compound is disclosed. The herbicidal compound is a water-insoluble compound that includes a carboxylic acid functionality, such as a phenoxy-substituted carboxylic acid compound or a substituted benzoic acid compound, and is sufficiently pure to form a dry, solid herbicidal salt composition after interaction with a suitable neutralizing base, such as ammonia, an alkylamine, a dialkylamine, a trialkylamine, a hydroxyalkylamine, a dihydroxyalkylamine, an alkaline salt of an alkali metal or a combination thereof. The dry herbicidal salt composition includes at least about 90% by weight of the water-soluble herbicidal salt, and dissolves rapidly and essentially completely in water to form an aqueous herbicidal solution including up to about 75% by weight of the water-soluble herbicidal salt.