Patents Assigned to E. I. de Pont de Nemours & Company
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Patent number: 8487145Abstract: Disclosed is a process for the manufacture of 2,3,3,3-tetrafluoropropene comprising: (a) contacting 1,1,1,2,3-pentafluoropropane with a catalyst comprised of chromium (III) oxide having a surface area of at least 150 m2/g and having an alkali metal loading of at least 7 milligrams of alkali metal per 100 square meters of catalyst surface area, to produce a product mixture comprising 2,3,3,3-tetrafluoropropene and hydrogen fluoride; and (b) recovering said 2,3,3,3-tetrafluoropropene from the product mixture produced in (a).Type: GrantFiled: March 12, 2012Date of Patent: July 16, 2013Assignee: E I de Pont de Nemours and CompanyInventors: Mario Joseph Nappa, Andrew Jackson
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Patent number: 8475818Abstract: The present invention provides formulations and methods useful in the control of ectoparasites on a domestic animal, using a formulation comprising Indoxacarb and a veterinarily acceptable carrier that is applied topically to 10% or less of the total surface area of a domestic animal. Other embodiments include these formulations also including one or more additional pesticides such as fipronil.Type: GrantFiled: August 30, 2007Date of Patent: July 2, 2013Assignee: E. I. de Pont de Nemours and CompanyInventors: Frank Guerino, Keith Alan Freehauf, Roger Mervyn Sargent, Peter Andrew O'Neil, Robert D. Simmons, Chen-Chao Wang
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Patent number: 8389255Abstract: An acetyl xylan esterase variant having perhydrolytic activity is provided for producing peroxycarboxylic acids from carboxylic acid esters and a source of peroxygen. More specifically, a Thermotoga maritima acetyl xylan esterase gene was modified using error-prone PCR and site-directed mutagenesis to create an enzyme catalyst characterized by an increase in specific activity. The variant acetyl xylan esterase may be used to produce peroxycarboxylic acids suitable for use in a variety of applications such as cleaning, disinfecting, sanitizing, bleaching, wood pulp processing, and paper pulp processing applications.Type: GrantFiled: March 23, 2011Date of Patent: March 5, 2013Assignee: E.I. de Pont de Nemours and CompanyInventors: Robert Dicosimo, John Edward Gavagan, Mark Scott Payne
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Publication number: 20120010100Abstract: This invention relates to an isolated nucleic acid fragment encoding a farnesyltransferase subunit. The invention also relates to the construction of a chimeric gene encoding all or a portion of the farnesyltransferase subunit, in sense or antisense orientation, wherein expression of the chimeric gene results in production of altered levels of the farnesyltransferase subunit in a transformed host cell.Type: ApplicationFiled: September 23, 2011Publication date: January 12, 2012Applicant: E. I. DE PONT DE NEMOURS AND COMPANY AND PIONEER HI-BRED INTERNATIONALInventors: Rebecca E. Cahoon, Timothy George Helentjaris, Guo-Hua Miao
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Patent number: 8003398Abstract: The present invention provides various methods and compositions which allow for determining the presence or amount of glyphosate, N-acetylglyphosate, N-acetyl AMPA or aminomethyl phosphoric acid (AMPA) and its various metabolites in a variety of test matrices. In one method, determining the presence or amount of N-acetylglyphosate and/or N-acetyl AMPA in a test sample comprises providing the test sample suspected of containing N-acetylglyphosate and/or N-acetyl AMPA; extracting the N-acetylglyphosate and/or N-acetyl AMPA from the test sample; and, detecting the N-acetylglyphosate and/or N-acetyl AMPA in the extract. In other methods, the presence or amount of at least one of glyphosate, N-acetylglyphosate, N-acetyl AMPA or aminomethyl phosphonic acid (AMPA) or a metabolite thereof in a test sample is determined.Type: GrantFiled: March 19, 2008Date of Patent: August 23, 2011Assignee: E.I. de Pont de Nemours and CompanyInventors: Frederick Q. Bramble, Jr., Anne M. Pentz
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Publication number: 20100159522Abstract: Lignocellulosic biomass comprising lignin is treated with a solvent, such as organosolv, under alkaline conditions at elevated temperatures, filtered, then contacted with a gas comprising ozone to produce a readily saccharifiable biomass.Type: ApplicationFiled: December 17, 2009Publication date: June 24, 2010Applicant: E.I. DE PONT DE NEMOURS AND COMPANYInventor: JELENA CIRAKOVIC
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Publication number: 20090240089Abstract: Disclosed herein is a process for the preparation of fluorine-containing olefins comprising contacting a chlorofluoroalkene with hydrogen in the presence of a catalyst at a temperature sufficient to cause replacement of the chlorine substituents with hydrogen. Also disclosed is a catalyst composition for the hydrodechlorination of chlorofluoroalkenes comprising copper metal deposited on a support.Type: ApplicationFiled: June 3, 2009Publication date: September 24, 2009Applicant: E.I.DE PONT DE NEMOURS AND COMPANYInventors: MARIO JOSEPH NAPPA, EKATERINA N. SWEARINGEN
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Patent number: 7263777Abstract: An apparatus for scribing the coating on a coated panel; comprising a base, at least one linear guide affixed to the base, a moveable table, a pivotable bracket mounted on the base, a cutter element mounted on the bracket; a loading mechanism positioned on top of the bracket, such that when the cutter element in the cutter assembly is brought into contact with a panel positioned on the moveable table, the loading mechanism applies a uniform force to the panel position on the table. The cutter element in contact with the panel scribes the panel through the coating thereby forming a scribe of at least one line on the panel.Type: GrantFiled: June 16, 2005Date of Patent: September 4, 2007Assignee: E. I. de Pont de Nemours and CompanyInventor: Jerome T. Adams
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Patent number: 7230090Abstract: The preparation and use of nucleic acid fragments encoding plant fatty acid modifying enzymes associated with modification of the delta-9 position of fatty acids, in particular, formation of conjugated double bonds are disclosed. Chimeric genes incorporating such nucleic acid fragments and suitable regulatory sequences can be used to create transgenic plants having altered lipid profiles. The preparation and use of nucleic acid fragments encoding plant fatty acid modifying enzymes associated with formation of a trans delta-12 double bond also are disclosed. Chimeric genes incorporating such nucleic acid fragments and suitable regulatory sequences can be used to create transgenic plants having altered lipid profiles.Type: GrantFiled: June 18, 2003Date of Patent: June 12, 2007Assignee: E. I. de Pont de Nemours and CompanyInventors: Edgar B. Cahoon, William D. Hitz, Kevin G. Ripp
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Patent number: 6436478Abstract: A process for coating a thermoplastic substrate which comprises applying a solvent based coating composition to the substrate and curing the coating composition at ambient temperature to 125° C. to form a uniform smooth film on the substrate; wherein the coating composition contains about 45-80% by weight of a film forming binder and 20-55% by weight of an organic liquid carrier; wherein the binder contains (A) 40-90% by weight, based on the weight of the binder, of a polymer selected from the following: acrylic polyol, polyester polyol, polyether polyol or a polyurethane polyol; and (B) 10-60% by weight, based on the weight of the binder, of an organic polyisocyanate crosslinking agent; and wherein the organic liquid carrier used in the coating composition comprises at least 50% by weight, based on the weight of the organic liquid carrier used in the coating composition, of tertiary butyl acetate; the process of this invention also can be used to apply lacquers, i.e.Type: GrantFiled: January 3, 2001Date of Patent: August 20, 2002Assignee: E. I. de Pont de Nemours & CompanyInventor: James William O'Neil
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Patent number: 5900511Abstract: A process for continuous hydrogenation of adiponitrile (ADN) to hexamethylene diamine (HMD) and optionally to amninocapronitrile (ACN) involving the catalytic hydrogenation of adiponitrile at relatively low temperature (e.g., 75.degree. C.) and pressure (e.g., 500 psig) using a sponge cobalt catalyst (Raney.RTM. Co) in a reaction medium that is substantially free of caustic. In such a process periodic addition of water controls the production of side reaction products and the periodic addition of ammonium hydroxide rejuvenates the catalyst. Hexamethylene diamine is an important intermediate for the synthesis of polyamides such as Nylon-6,6 and aminocapronitrile is a potential intermediate of Nylon-6.Type: GrantFiled: March 26, 1998Date of Patent: May 4, 1999Assignee: E. I. de Pont de Nemours and CompanyInventors: Sourav Kumar Sengupta, Theodore Augur Koch, Karl Robert Krause
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Patent number: 4661439Abstract: Efficient, lower cost process for preparing dry, nonelectroscopic toners surface coated with antistatic agent and liquid slip agent, utilizing a pressure filter and a planetary mixer. The toners are useful for developing positive- or negative-working photosensitive elements and having imagewise tacky and nontacky surfaces.Type: GrantFiled: December 6, 1985Date of Patent: April 28, 1987Assignee: E.I. De Pont de Nemours and CompanyInventor: Maureen K. Ruskin