Patents by Inventor Annalisa Hargis

Annalisa Hargis 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).

  • Publication number: 20160009610
    Abstract: A hydrodeoxygenation process for producing a linear alkane from a feedstock comprising a saturated or unsaturated C10-18 oxygenate that comprises an ester group, carboxylic acid group, carbonyl group and/or alcohol group is disclosed. This process comprises contacting the feedstock with (i) a catalyst comprising about 0.1% to about 10% by weight of a metal selected from Group IB, VIB, or VIII of the Periodic Table, and (ii) a heteropolyacid or heteropolyacid salt, at a temperature between about 150° C. to about 250° C. and a hydrogen gas pressure of at least about 300 psig. By contacting the feedstock with the catalyst and heteropolyacid or heteropolyacid salt under these temperature and pressure conditions, the C10-18 oxygenate is hydrodeoxygenated to a linear alkane that has the same carbon chain length as the C10-18 oxygenate.
    Type: Application
    Filed: March 12, 2014
    Publication date: January 14, 2016
    Inventors: Annalisa Hargis, Manish S. Kelkar, Kenneth Chad Manning, Joachim C. Ritter, Sourav Kumar Sengupta
  • Patent number: 8580910
    Abstract: New triaminophenol compositions and related compounds are disclosed, as are processes for their preparation and for the preparation of novel salts and diacid complexes from such compounds. Polymers prepared from these compositions can be made into high strength fiber, film, and tape and are useful in applications such as protective apparel, aircraft, automotive components, personal electronics, and sports equipment.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: November 12, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Rajiv Dhawan, Annalisa Hargis, Joachim C Ritter
  • Publication number: 20130172621
    Abstract: An integrated process is provided for efficiently preparing 2,4,5-triaminophenol, starting with nitration of 2,6-dihalobenzene; high purity salts thereof; and complexes of 2,4,5-triaminophenol aromatic diacids, which are precursors for making polybenzimidazole polymer for high performance fibers. The process design eliminates several costly intermediate drying and recrystallization steps. The handling of solid materials with possible skin sensitizing properties and toxicity is avoided, thereby eliminating human and environmental exposure.
    Type: Application
    Filed: December 21, 2010
    Publication date: July 4, 2013
    Applicant: E.I.Du Pont de Nemours and Company
    Inventors: Rajiv Dhawan, Annalisa Hargis, Joachim C. Ritter
  • Publication number: 20130158296
    Abstract: A process is provided for the preparation of 1-amino-3-halo-4,6-dinitrobenzene and related compounds by monoamination of dihalodinitrobenzenes by ammonia in the presence of solvent and water. Using glycol as a solvent for the dihalodinitrobenzene and feeding ammonia at a rate at which it is consumed allows for the synthesis of high purity product, such as 1-amino-3-chloro-4,6-dinitrobenzene, at high yields.
    Type: Application
    Filed: December 21, 2010
    Publication date: June 20, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Annalisa Hargis, Joachim C. Ritter
  • Publication number: 20130012741
    Abstract: New triaminophenol compositions and related compounds are disclosed, as are processes for their preparation and for the preparation of novel salts and diacid complexes from such compounds. Polymers prepared from these compositions can be made into high strength fiber, film, and tape and are useful in applications such as protective apparel, aircraft, automotive components, personal electronics, and sports equipment.
    Type: Application
    Filed: December 21, 2010
    Publication date: January 10, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Rajjiv Dhawan, Annalisa Hargis, Joachim C. Ritter
  • Patent number: 8071812
    Abstract: A process is provided for the preparation of 1,3-diamino-4,6-dinitrobenzene by amination of 1,3-dihalo-4,6-dinitrobenzene. The presence of water advantageously results in a highly pure product, free or essentially free of glycol ether impurities.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: December 6, 2011
    Assignee: E.I du Pont de Nemours & Company
    Inventors: Joachim C. Ritter, Annalisa Hargis