Patents by Inventor Marius Rodson
Marius Rodson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6340653Abstract: Microencapsulated compositions containing haloacetanilide herbicides, i.e., acetochlor, are produced by microencapsulation process. The microencapsulated composition performs comparably to nonencapsulated compositions of the same herbicide applied at the same application rates.Type: GrantFiled: May 30, 1995Date of Patent: January 22, 2002Assignee: Syngenta LimitedInventors: Herbert B. Scher, Marius Rodson
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Patent number: 6133197Abstract: Polyurea microcapsules particularly suitable for foliar application are prepared by an interfacial polymerization process in which the polyurea is formed from an aromatic diisocyanate and optionally an aromatic polyisocyanate having 3 or more isocyanate groups, in a weight ratio (when both types of isocyanate are present) of polyisocyanate:diisocyanate of from about 1:100 to about 1:1.5, and in which the microcapsules are produced having an average particle size of from about 1 to about 5 microns.As compared to conventional liquid (e.g., emulsifiable concentrate) compositions of pesticides, the microcapsules can provide safer handling and higher loading of active ingredients, while providing substantially equivalent biological activity to the liquid compositions.Type: GrantFiled: May 21, 1997Date of Patent: October 17, 2000Assignee: ZENECA LimitedInventors: Jin-Ling Chen, Marius Rodson, Herbert B. Scher, Kuo-Shin Lee, deceased
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Patent number: 5562914Abstract: A composition of matter having a clay porous granule and a polyurethane matrix formed from the polymerization of a polyol and a polyisocyanate and held within the pores of the granule and having uniformly distributed throughout the polyurethane matrix a liquid material, for example, a pesticide and a method for loading a porous granule with the polyurethane and the liquid material by:(a) spraying a porous granule with a liquid composition comprising a polyol, a polyisocyanate and a liquid material to be retained in the porous granule, and(b) polymerizing the polyol and the polyisocyanate to form a polyurethane matrix polymer which has the liquid materials uniformly distributed throughout the polyurethane matrix.Type: GrantFiled: December 6, 1990Date of Patent: October 8, 1996Assignee: Zeneca Inc.Inventors: Herbert B. Scher, Marius Rodson
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Patent number: 5332584Abstract: A process is disclosed for the microencapsulation of a substantially water-insoluble liquid material within a porous shell to effect a slow rate of release of said material through said shell which comprises (a) providing an organic solution comprising said material and an etherified urea-formaldehyde prepolymer dissolved therein in which from about 50% to about 98% of the methylol groups of said prepolymer have been etherified with a C.sub.4 -C.sub.Type: GrantFiled: December 9, 1991Date of Patent: July 26, 1994Assignee: Zeneca Inc.Inventors: Herbert B. Scher, Marius Rodson
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Patent number: 5223477Abstract: Microcapsule formulations are combined with emulsions or particle dispersions in a single-package formulation which is storage-stable and provides substantially the full efficacy of each of the two forms as if applied individually. The single-package formulation is suspension having two dispersed phases--the first being an active species encapsulated in a shell of inert polymeric diffusion-limiting material (i.e., a microcapsule), and the second being an active species in water-insoluble form with no diffusion-limiting barrier at its surface. An appropriate suspension system is included to prevent the dispersed phases from agglomerating within themselves and with each other. The invention is useful in combining two different active ingredients as well as in combining immediate-delivery and delayed-delivery forms of the same active ingredient.Type: GrantFiled: July 1, 1991Date of Patent: June 29, 1993Assignee: Imperial Chemical Industries PlcInventors: Herbert B. Scher, Marius Rodson, Jose L. Calvo, Miguel Gimeno
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Patent number: 5160529Abstract: Microcapsules containing a substantially water-insoluble liquid material, such as an anilide herbicide, and optionally also a herbicide antidote, within a porous shell to effect a slow rate of release of said herbicide (and optionally said antidote) through said shell, are produced by a process which comprises (a) providing an organic solution comprising said material and an etherified amino resin prepolymer dissolved therein which from about 50% to about 98% of the methylol groups of said prepolymer have been etherified with a C.sub.4 -C.sub.Type: GrantFiled: February 6, 1991Date of Patent: November 3, 1992Assignee: Imperial Chemical Industries PLCInventors: Herbert B. Scher, Marius Rodson
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Patent number: 5120542Abstract: Toxicant, especially pesticide compositions, having lowered dermal toxicity are provided. The compositions include a lipophilic-pesticide, a nonionic surfactant and a dry inert diluent carrier. Methods for reducing the dermal toxicity of lipophilic toxicants, especially pesticides are provided, as well as methods for controlling insect pests using the disclosed compositions.Type: GrantFiled: January 3, 1991Date of Patent: June 9, 1992Assignee: Imperial Chemical Industries PLCInventors: Herbert B. Scher, Marius Rodson, Ronald L. Morgan
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Patent number: 5049182Abstract: Microcapsule formulations are combined with emulsions or particle dispersions in a single-package formulation which is storage-stable and provides substantially the full efficacy of each of the two forms as if applied individually. The single-package formulation is suspension having two dispersed phases--the first being an active species encapsulated in a shell of inert polymeric diffusion-limiting material (i.e., a microcapsule), and the second being an active species in water-insoluble form with no diffusion-limiting barrier at its surface. An appropriate suspension system is included to prevent the dispersed phases from agglomerating within themselves and with each other. The invention is useful in combining two different active ingredients as well as in combining immediate-delivery and delayed-delivery forms of the same active ingredient.Type: GrantFiled: February 3, 1989Date of Patent: September 17, 1991Assignee: ICI Americas Inc.Inventors: Herbert B. Scher, Marius Rodson, Jose L. Calvo, Miguel Gimeno
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Patent number: 4994261Abstract: Toxicant, especially pesticide compositions, having lowered dermal toxicity are provided. The compositions include a lipophilic-pesticide, a nonionic surfactant and a dry inert diluent carrier. Methods for reducing the dermal toxicity of lipophilic toxicants, especially pesticides are provided, as well as methods for controlling insect pests using the disclosed compositions.Type: GrantFiled: August 15, 1988Date of Patent: February 19, 1991Assignee: ICI Americas Inc.Inventors: Herbert B. Scher, Marius Rodson, Ronald L. Morgan
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Patent number: 4956129Abstract: A process is disclosed for the microencapsulation of a substantially water-insoluble liquid material within a porous shell to effect a slow rate of release of said material through said shell which comprises (a) providing an organic solution comprising said material and an etherified urea-formaldehyde prepolymer dissolved therein which from about 50% to about 98% of the methylol groups of said prepolymer have been etherified with a C.sub.4 -C.sub.Type: GrantFiled: February 1, 1988Date of Patent: September 11, 1990Assignee: ICI Americas Inc.Inventors: Herbert B. Scher, Marius Rodson
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Patent number: 4933167Abstract: Toxicant, especially pesticide compositions, having lowered dermal toxicity are provided. The compositions include a microencapsulated lipophilicpesticide, a hydrophilic surfactant and water. Methods for reducing the dermal toxicity of microencapsulated lipophilic toxicants, especially pesticides are provided. Methods for controlling insect pests using the disclosed compositions are provided.Type: GrantFiled: November 14, 1988Date of Patent: June 12, 1990Inventors: Herbert B. Scher, Marius Rodson, Ronald L. Morgan
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Patent number: 4456569Abstract: A protective colloid for use in an interfacial polymerization process comprising a graft copolymer of polyvinyl alcohol and methyl vinyl ether/maleic acid.Type: GrantFiled: November 30, 1983Date of Patent: June 26, 1984Assignee: Stauffer Chemical CompanyInventors: Marius Rodson, Herbert B. Scher
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Patent number: 4448929Abstract: A protective colloid for use in an interfacial polymerization process comprising a graft copolymer of polyvinyl alcohol and methyl vinyl ether/maleic acid.Type: GrantFiled: June 1, 1982Date of Patent: May 15, 1984Assignee: Stauffer Chemical CompanyInventors: Marius Rodson, Herbert B. Scher