Patents by Inventor E I DU PONT DE NEMOURS AND COMPANY

E I DU PONT DE NEMOURS AND COMPANY 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: 20130160478
    Abstract: This invention relates to a method for producing heating in a high temperature heat pump. The method comprises condensing a vapor working fluid comprising E-HFO-1438mzz and optionally HFC-245eb, in a condenser, thereby producing a liquid working fluid. This invention also relates to a method of raising the maximum feasible condenser operating temperature in a high temperature heat pump apparatus. This method comprises charging the high temperature heat pump with a working fluid comprising E-HFO-1438mzz and optionally HFC-245eb. This invention also relates to a high temperature heat pump apparatus containing a working fluid comprising E-HFO-1438mzz and optionally HFC-245eb. This invention also relates to a composition comprising: (i) E-HFO-1438mzz and HFC-245eb; and (ii) a stabilizer to prevent degradation at temperatures of 55° C. or above, (iii) a lubricant suitable for use at 55° C. or above, or both (ii) and (iii).
    Type: Application
    Filed: December 20, 2012
    Publication date: June 27, 2013
    Applicant: E I Du Pont De Nemours And Company
    Inventor: E I Du Pont De Nemours And Company
  • Publication number: 20130160447
    Abstract: A method for converting heat from a heat source to mechanical energy is provided. The method comprises heating a working fluid E-1,1,1,4,4,5,5,5-octafluoro-2-pentene (E-HFO-1438mzz) and optionally 1,1,1,2,3-pentafluoropropane (HFC-245eb) using heat supplied from the heat source; and expanding the heated working fluid to lower the pressure of the working fluid and generate mechanical energy as the pressure of the working fluid is lowered. Additionally, a power cycle apparatus containing a working fluid to convert heat to mechanical energy is provided. The apparatus contains a working fluid comprising E-HFO-1438mzz and optionally HFC-245eb. A working fluid is provided comprising E-HFO-1438mzz and HFC-245eb. The working fluid (i) has a temperature of at least about 150° C.; (ii) further comprises Z-HFO-1438mzz; or both (i) and (ii).
    Type: Application
    Filed: December 20, 2012
    Publication date: June 27, 2013
    Applicant: E I Du Pont De Nemours And Company
    Inventor: E I Du Pont De Nemours And Company
  • Publication number: 20130160813
    Abstract: A back-contact solar cell module and a process for making such a solar cell module are provided. The module includes a porous wire mounting layer with a plurality of elongated electrically conductive wires mounted thereon. A polymeric encapsulant layer is provided between a rear surface of solar cells of the module and the porous wire mounting layer and is melted to adhere to the solar cells and penetrate the porous wire mounting layer. Back electrical contacts on the solar cells are electrically connected to the electrically conductive wires through the porous wire mounting layer.
    Type: Application
    Filed: December 21, 2012
    Publication date: June 27, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: E I DU PONT DE NEMOURS AND COMPANY
  • Publication number: 20130165549
    Abstract: The invention pertains to a printing form and a process for preparing the printing form from a solvent-free curable composition that includes, in prescribed relative amounts, an epoxy novolac resin; a bisphenol-A epoxy resin or a bisphenol-F epoxy resin; a monofunctional reactive diluent; a multifunctional reactive diluent; and a stoichiometric amount of an amine curing agent. The ratio of the epoxy novolac resin to the bisphenol epoxy resin is 1:3 to 3:1 by weight. The process includes applying the curable composition to a supporting substrate to form a layer, curing the layer at one or more temperatures in a temperature range, and engraving to form at least one cell in the cured layer. The process prepares printing forms, particularly gravure printing forms, having a cured resin composition layer that is engravable, resistant to solvent inks and to mechanical wear, and capable of printing gravure-quality images.
    Type: Application
    Filed: December 18, 2012
    Publication date: June 27, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: E I DU PONT DE NEMOURS AND COMPANY
  • Publication number: 20130161888
    Abstract: Jounce bumper (14) for mounting in a vehicle suspension system comprising a shock absorber with a cylinder and a slidable piston rod (12), the jounce bumper (14) including an elastically compressible bumper portion (24) comprising an axially extending central bore (15) for receiving the piston rod therethrough, a mounting portion (18) positioned at one end of the bumper portion configured for mounting the jounce bumper to a component of the vehicle suspension system, and a bending lip positioned at an opposite end of the bumper portion and configured to generally surround the piston rod, the bending lip comprising a contact edge configured to contact a striker plate of the shock absorber during compression of the shock absorber. The contact edge is configured to contact said striker plate on only part of a closed circumference surrounding the piston rod, at least during initial contact between the bending lip and striker plate.
    Type: Application
    Filed: December 17, 2012
    Publication date: June 27, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: E I DU PONT DE NEMOURS AND COMPANY
  • Publication number: 20130160469
    Abstract: This invention relates to method for producing cooling in a chiller having an evaporator wherein a refrigerant composition is evaporated to cool a heat transfer medium and the cooled heat transfer medium is transported out of the evaporator to a body to be cooled, wherein said chiller is a centrifugal chiller. The method comprises evaporating a composition comprising E-HFO-1438mzz and optionally HFC-245eb as a refrigerant composition in the evaporator. This invention also relates to a composition comprising: (1) a refrigerant component consisting essentially of HFC-245eb and E-HFO-1438mzz; and (2) a lubricant suitable for use in a chiller; wherein the E-HFO-1438mzz in the refrigerant is at least 1 weight percent. This invention also relates to a centrifugal chiller apparatus containing a refrigerant composition, characterized by said refrigerant comprising E-HFO-1438mzz and optionally HFC-245eb.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 27, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: E I DU PONT DE NEMOURS AND COMPANY
  • Publication number: 20130160812
    Abstract: A back-contact solar cell module comprises an array of back-contact solar cells having a substantially common coefficient of thermal expansion and a glass back-sheet having a coefficient of thermal expansion that is within 15% of the coefficient of thermal expansion of the solar cells of the solar cell array. The glass back-sheet has at least two conductive circuits formed of sintered metal and glass on a surface of the glass back-sheet. Electrical contacts on the back side of the solar cells of the solar cell array are physically and electrically connected to the conductive circuits formed on the glass back-sheet. Processes for making such back-contact solar cell modules are also provided.
    Type: Application
    Filed: December 21, 2012
    Publication date: June 27, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: E I DU PONT DE NEMOURS AND COMPANY
  • Publication number: 20130165506
    Abstract: The present invention relates to compositions of puleganic acid, and the use thereof as a topical treatment for skin, such as a repellant for insects or arthropods.
    Type: Application
    Filed: February 22, 2013
    Publication date: June 27, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: E I DU PONT DE NEMOURS AND COMPANY
  • Publication number: 20130157280
    Abstract: 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: Application
    Filed: February 26, 2013
    Publication date: June 20, 2013
    Applicants: PIONEER HI-BRED INTERNATIONAL INC, E I DU PONT DE NEMOURS AND COMPANY
    Inventors: E I DU PONT DE NEMOURS AND COMPANY, PIONEER HI-BRED INTERNATIONAL INC
  • Publication number: 20130158197
    Abstract: Disclosed herein is a curable composition comprising a polyhydroxy curable fluoroelastomer, a polyhydroxy curative, a cure accelerator and an unsaturated metal compound process aid comprising a siloxane having at least one vinyl or allyl group bonded to a silicon atom. Such curable compositions have a lower Mooney viscosity than do similar compositions absent the process aid.
    Type: Application
    Filed: November 14, 2012
    Publication date: June 20, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: E I DU PONT DE NEMOURS AND COMPANY
  • Publication number: 20130157316
    Abstract: A process for production of poly(?1,3 glucan) from a renewable feedstock, for applications in fibers, films, and pulps. The effect of addition of boric acid in increasing the yield of the desired end products, poly(?1,3 glucan) and fructose, and decreasing formation of the undesired by-product leucrose.
    Type: Application
    Filed: December 19, 2012
    Publication date: June 20, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: E I Du Pont De Nemours And Company
  • Publication number: 20130158202
    Abstract: Disclosed herein is a process for the manufacture of a fluoroelastomer composition containing fluoropolymer fibrils. The process comprises applying shear to a fluoroelastomer gum in a mixer while adding a liquid dispersion of fibrillatable fluoropolymer.
    Type: Application
    Filed: November 14, 2012
    Publication date: June 20, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: E I Du Pont De Nemours and Company
  • Publication number: 20130157331
    Abstract: The endogenous pnp gene encoding polynucleotide phosphorylase in the Zymomonas genome was identified as a target for modification to provide improved xylose utilizing cells for ethanol production. The cells are in addition genetically modified to have increased expression of ribose-5-phosphate isomerase (RPI) activity, as compared to cells without this genetic modification, and are not limited in xylose isomerase activity in the absence of the pnp modification.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 20, 2013
    Applicant: E I Du Pont De Nemours And Company
    Inventor: E I Du Pont De Nemours And Company
  • Publication number: 20130158168
    Abstract: Provided are aliphatic-aromatic copolyetheresters that can exhibit biodegradation with improved physical properties. The copolyetheresters can be blended with other polymeric materials, and are useful for making a variety of shaped articles. The aliphatic-aromatic copolyetheresters can include combinations of terephthalic acid or ester with linear aliphatic, or a non-linear dicarboxylic acid or ester, that is condensed with a linear glycol and a polyalkylene ether glycol.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 20, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: E I DU PONT DE NEMOURS AND COMPANY
  • Publication number: 20130158116
    Abstract: 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 variant of the Thermotoga maritima C277T acetyl xylan esterase is provided having an improved specific activity when producing peroxycarboxylic acids in the presence of an anionic surfactant. 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: Application
    Filed: December 12, 2012
    Publication date: June 20, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: E. I. DU PONT DE NEMOURS AND COMPANY
  • Publication number: 20130158115
    Abstract: 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 variant of the Thermotoga maritima C277T acetyl xylan esterase is provided having an improved specific activity when producing peroxycarboxylic acids in the presence of an anionic surfactant. 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: Application
    Filed: December 12, 2012
    Publication date: June 20, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: E. I. Du Pont De Nemours And Company
  • Publication number: 20130157001
    Abstract: This invention pertains to a structural core comprising a nonwoven fibrous reinforcement web of carbon nanotubes, the web being coated with a thermoset or thermoplastic resin wherein the carbon nanotubes are oriented within the reinforcement web such that, after resin coating, the ratio of modulus in the plane of the web in a first direction to the modulus in a second direction orthogonal to the first direction is no greater than 2.0; the in-plane Young's modulus of the resin coated web is at least 14 GPa and the coating resin comprises from 15 to 75 weight percent of the weight of web plus resin.
    Type: Application
    Filed: December 4, 2012
    Publication date: June 20, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: E I DU PONT DE NEMOURS AND COMPANY
  • Publication number: 20130156483
    Abstract: A method and apparatus of securing and tensioning a printing form in an apparatus having a rotatable drum includes securing a first portion of the printing form to a first means for receiving that is coupled to a surface of the drum, and securing a second portion of the printing form to a second means for receiving that is disposed on a rotatable member that extends over a portion of the drum. The rotatable member is rotated so that the circumferential distance between the first receiving means and the second receiving means is about the same as a length of the printing form. A rotary torque means is coupled to the rotatable member to apply a substantially constant torque on the member and tension the printing form about the surface of the drum. The rotary torque means adjusts torque on the member which adjusts tension on the printing form.
    Type: Application
    Filed: February 13, 2013
    Publication date: June 20, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: E I DU PONT DE NEMOURS AND COMPANY
  • Publication number: 20130153008
    Abstract: A photovoltaic module comprising, in this order, a front sheet, a front encapsulant layer having a total area (B) consisting of one or more in-plane elements, one or more photoactive cells, a back encapsulant layer having an area (A), and a back sheet, wherein the front encapsulant layer having the total area (B) covers the area defined by the one or more photovoltaic cells and wherein the total area (B) of the front encapsulant layer is smaller than the area (A) of the back encapsulant layer, and wherein the contours of the one or more in-plane elements of the front encapsulant layer and the contour of the back encapsulant layer do not intersect.
    Type: Application
    Filed: December 13, 2012
    Publication date: June 20, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: E I Du Pont De Nemours and Company
  • Publication number: 20130158118
    Abstract: 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 variant of the Thermotoga maritima C277T acetyl xylan esterase is provided having an improved specific activity when producing peroxycarboxylic acids in the presence of an anionic surfactant. 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: Application
    Filed: December 12, 2012
    Publication date: June 20, 2013
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: E. I. DU PONT DE NEMOURS AND COMPANY