Patents by Inventor Lee A. Silverman
Lee A. Silverman 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: 8871335Abstract: Provided are solar control laminates comprising a solar control film and a polymeric sheet. The solar control film comprises a polymeric film coated with a coating comprising inorganic infrared absorbing nanoparticles. Preferably, inorganic infrared absorbing nanoparticles comprise nanoparticles of antimony tin oxide (ATO), indium tin oxide (ITO), lanthanum hexaboride (LaB6) or mixtures thereof. Optionally, the solar control laminate also comprises a rigid sheet, such as a glass sheet.Type: GrantFiled: August 30, 2006Date of Patent: October 28, 2014Assignee: Kuraray America Inc.Inventors: Jerrel C. Anderson, Richard A. Fugiel, Richard A. Hayes, Lee A. Silverman
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Patent number: 8858833Abstract: The invention is directed to a process of combining an aqueous solution of a fluoride with an aqueous solution of a host multi-valent metal salt and an aqueous solution of a salt forming a reactant mixture resulting in a precipitate of aqueously insoluble rare-earth doped multi-valent metal fluoride nanoparticles.Type: GrantFiled: May 31, 2006Date of Patent: October 14, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Changzai Chi, Daniel Albert Green, Kurt Richard Mikeska, Lee A. Silverman
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Patent number: 8344175Abstract: The invention relates to compounds of Formula (I): The invention further relates to liquid crystal compositions comprising compounds of Formula (I); compositions further comprising one or more chiral compounds; and polymer networks derived from the polymerization of the liquid crystal compositions. Another embodiment relates to processes for providing compounds of Formula (I).Type: GrantFiled: January 25, 2011Date of Patent: January 1, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Marc B. Goldfinger, Jose Manuel Rodriguez-Parada, Lee A. Silverman
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Patent number: 8334393Abstract: The invention relates to compounds of formula (I): wherein R1 and R2 are each independently selected from the group: H, F, Cl and CH3; n1 and n2 are each independently integers 3 to 20; q and r are each independently integers 0, 1 or 2, with the proviso that q+r is ?1; D is a divalent chiral radical selected from the group: wherein R3 is a C1 to C6 straight or branched chain alkyl group; and each B1 and B2 is a divalent radical independently selected from the group: R4-substituted-1,4-phenyl, wherein R4 is H, —CH3 or —OCH3; 2,6-naphthyl; and 4,4?-biphenyl; with the provisos that when q+r=3, at least one of B1 and B2 is R4-substituted-1,4-phenyl; and when q+r=4, at least two of B1 and B2 are R4-substituted-1,4-phenyl. The invention further relates to liquid crystal compositions comprising compounds of formula (I) and polymer networks derived from the polymerization of the liquid crystal compositions.Type: GrantFiled: March 17, 2011Date of Patent: December 18, 2012Assignee: E I du Pont de Nemours and CompanyInventors: Marc B. Goldfinger, Jose Manuel Rodriguez-Parada, Lee A. Silverman, Kai Qi
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Patent number: 8178206Abstract: Provided is a solar control composition comprising an infrared absorbing phthalocyanine compound or naphthalocyanine compound and a resin having a modulus from 20,000 psi (138 MPa) to 1000 psi (7 MPa) and solar control laminates comprising the solar control composition of the invention.Type: GrantFiled: December 22, 2009Date of Patent: May 15, 2012Assignee: E I du Pont de Nemours and CompanyInventors: Richard Allan Hayes, Richard A. Fugiel, Thomas R. Phillips, Lee A. Silverman, Jason S. Wall
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Patent number: 7988881Abstract: Provided are multilayer laminates having one or more layers comprising twisted nematic liquid crystals and one or more layers of a polymeric sheet. The twisted nematic liquid crystal layers reflect infrared radiation. Thus, the multilayer laminates are useful to reduce the transmission of infrared energy. For example, in some embodiments the multilayer laminates are useful as windows to reduce energy consumption necessary to cool the interior of a structure such as an automobile or building. Preferably, the multilayer laminates retain one or more of the beneficial properties of safety glass. The multilayer laminates may include additional layers such as infrared absorbing layers, half wave plates, and the like, to minimize the transmission of infrared energy. The multilayer laminates may also include further additional layers such as polymeric films, polymeric sheets, rigid sheets, and the like.Type: GrantFiled: September 30, 2008Date of Patent: August 2, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Kai Qi, Lee A. Silverman, Marc B. Goldfinger, Richard Allen Hayes, Jerrel C. Anderson
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Publication number: 20110163267Abstract: The invention relates to compounds of formula (I): wherein R1 and R2 are each independently selected from the group: H, F, Cl and CH3; n1 and n2 are each independently integers 3 to 20; q and r are each independently integers 0, 1 or 2, with the proviso that q+r is ?1; D is a divalent chiral radical selected from the group: wherein R3 is a C1 to C6 straight or branched chain alkyl group; and each B1 and B2 is a divalent radical independently selected from the group: R4-substituted-1,4-phenyl, wherein R4 is H, —CH3 or —OCH3; 2,6-naphthyl; and 4,4?-biphenyl; with the provisos that when q+r=3, at least one of B1 and B2 is R4-substituted-1,4-phenyl; and when q+r=4, at least two of B1 and B2 are R4-substituted-1,4-phenyl. The invention further relates to liquid crystal compositions comprising compounds of formula (I) and polymer networks derived from the polymerization of the liquid crystal compositions.Type: ApplicationFiled: March 17, 2011Publication date: July 7, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Marc B. GOLDFINGER, Jose Manuel RODRIGUEZ-PARADA, Lee A. SILVERMAN, Kai QI
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Publication number: 20110114885Abstract: The invention relates to compounds of Formula (I): The invention further relates to liquid crystal compositions comprising compounds of Formula (I); compositions further comprising one or more chiral compounds; and polymer networks derived from the polymerization of the liquid crystal compositions. Another embodiment relates to processes for providing compounds of Formula (I).Type: ApplicationFiled: January 25, 2011Publication date: May 19, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: MARC B. GOLDFINGER, Jose Manuel Rodriguez-Parada, Lee A. Silverman
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Patent number: 7914700Abstract: The invention relates to compounds of formula (I): wherein R1 and R2 are each independently selected from the group: H, F, Cl and CH3; n1 and n2 are each independently integers 3 to 20; q and r are each independently integers 0, 1 or 2, with the proviso that q+r is ?1; D is a divalent chiral radical selected from the group: wherein R3 is a C1 to C6 straight or branched chain alkyl group; and each B1 and B2 is a divalent radical independently selected from the group: R4-substituted-1,4-phenyl, wherein R4 is H, —CH3 or —OCH3; 2,6-naphthyl; and 4,4?-biphenyl; with the provisos that when q+r=3, at least one of B1 and B2 is R4-substituted-1,4-phenyl; and when q+r=4, at least two of B1 and B2 are R4-substituted-1,4-phenyl. The invention further relates to liquid crystal compositions comprising compounds of formula (I) and polymer networks derived from the polymerization of the liquid crystal compositions.Type: GrantFiled: March 30, 2007Date of Patent: March 29, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Marc B. Goldfinger, Jose Manuel Rodriguez-Parada, Lee A. Silverman, Kai Qi
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Patent number: 7879256Abstract: The invention relates to compounds of Formula (I): The invention further relates to liquid crystal compositions comprising compounds of Formula (I); compositions further comprising one or more chiral compounds; and polymer networks derived from the polymerization of the liquid crystal compositions. Another embodiment relates to processes for providing compounds of Formula (I).Type: GrantFiled: March 30, 2007Date of Patent: February 1, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Marc B. Goldfinger, Jose Manuel Rodriguez-Parada, Lee A. Silverman, Kai Qi
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Publication number: 20100307670Abstract: Provided are multilayer laminates having one or more layers comprising twisted nematic liquid crystals and one or more layers of a polymeric sheet comprising a polymer with a modulus of 20,000 psi (138 MPa) or less. The twisted nematic liquid crystal layers reflect infrared radiation. Thus, the multilayer laminates are useful to reduce the transmission of infrared energy. For example, in some embodiments the multilayer laminates are useful as windows to reduce energy consumption necessary to cool the interior of a structure such as an automobile or building. Preferably, the multilayer laminates retain the beneficial properties of safety glass. The multilayer laminates may include additional layers such as infrared absorbing layers, half wave plates, and the like, to minimize the transmission of infrared energy. The multilayer laminates may also include further additional layers such as polymeric films, polymeric sheets, rigid sheets, and the like.Type: ApplicationFiled: June 17, 2010Publication date: December 9, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: LEE A SILVERMAN, Marc B. Goldfinger, Richard A. Hayes
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Publication number: 20100263790Abstract: Provided are multilayer laminates having one or more layers comprising twisted nematic liquid crystals and one or more layers of a polymeric sheet comprising a polymer with a modulus between 20,000 psi (138 MPa) and 100,000 psi (690 MPa). The twisted nematic liquid crystal layers reflect infrared radiation. Thus, the multilayer laminates are useful to reduce the transmission of infrared energy. For example, in some embodiments the multilayer laminates are useful as windows to reduce energy consumption necessary to cool the interior of a structure such as an automobile or building. Preferably, the multilayer laminates retain the beneficial properties of safety glass. The multilayer laminates may include additional layers such as infrared absorbing layers, half wave plates, and the like, to minimize the transmission of infrared energy. The multilayer laminates may also include further additional layers such as polymeric films, polymeric sheets, rigid sheets, and the like.Type: ApplicationFiled: July 1, 2010Publication date: October 21, 2010Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Marc B. Goldfinger, Richard A. Hayes, Lee A. Silverman
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Patent number: 7759414Abstract: Provided are compositions comprising infrared absorptive inorganic nanoparticles and an ethylene copolymer, and methods to produce the compositions. The infrared absorptive inorganic nanoparticles preferably include antimony tin oxide (ATO), indium tin oxide (ITO), lanthanum hexaboride (LaB6), or mixtures thereof. Also provided are polymer blends, polymeric films and sheets, solar control laminates, and processes to produce the polymer blends, polymeric films and sheets and solar control laminates.Type: GrantFiled: July 14, 2005Date of Patent: July 20, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Richard A. Hayes, Thomas R. Phillips, Lee A. Silverman
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Patent number: 7749577Abstract: Provided are multilayer laminates having one or more layers comprising twisted nematic liquid crystals and one or more layers of a polymeric sheet comprising a polymer with a modulus between 20,000 psi (138 MPa) and 100,000 psi (690 MPa). The twisted nematic liquid crystal layers reflect infrared radiation. Thus, the multilayer laminates are useful to reduce the transmission of infrared energy. For example, in some embodiments the multilayer laminates are useful as windows to reduce energy consumption necessary to cool the interior of a structure such as an automobile or building. Preferably, the multilayer laminates retain the beneficial properties of safety glass. The multilayer laminates may include additional layers such as infrared absorbing layers, half wave plates, and the like, to minimize the transmission of infrared energy. The multilayer laminates may also include further additional layers such as polymeric films, polymeric sheets, rigid sheets, and the like.Type: GrantFiled: May 26, 2006Date of Patent: July 6, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Marc B. Goldfinger, Richard A. Hayes, Lee A. Silverman
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Patent number: 7744970Abstract: Provided are multilayer laminates having one or more layers comprising twisted nematic liquid crystals and one or more layers of a polymeric sheet comprising a polymer with a modulus of 20,000 psi (138 MPa) or less. The twisted nematic liquid crystal layers reflect infrared radiation. Thus, the multilayer laminates are useful to reduce the transmission of infrared energy. For example, in some embodiments the multilayer laminates are useful as windows to reduce energy consumption necessary to cool the interior of a structure such as an automobile or building. Preferably, the multilayer laminates retain the beneficial properties of safety glass. The multilayer laminates may include additional layers such as infrared absorbing layers, half wave plates, and the like, to minimize the transmission of infrared energy. The multilayer laminates may also include further additional layers such as polymeric films, polymeric sheets, rigid sheets, and the like.Type: GrantFiled: May 26, 2006Date of Patent: June 29, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Lee A. Silverman, Marc B. Goldfinger, Richard A. Hayes
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Patent number: 7736532Abstract: Provided is a composition comprising a nonmicellar twisted nematic liquid crystal having cholesteric near infrared-reflecting properties and at least one near infrared absorptive material. This composition reduces the transmission of near infrared radiation. The composition can be used as a layer, optionally in conjunction with polymeric films, polymeric sheets, rigid sheets, and the like, to form multilayer laminates. In some embodiments these multilayer laminates are useful as solar control windows or window films to reduce energy consumption necessary to cool the interior of a structure such as an automobile or building.Type: GrantFiled: May 26, 2006Date of Patent: June 15, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Lee A. Silverman, Marc B. Goldfinger, Richard A. Hayes, Mark E. Lewittes, Wayne E. Marsh
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Publication number: 20100096604Abstract: Provided is a solar control composition comprising an infrared absorbing phthalocyanine compound or naphthalocyanine compound and a resin having a modulus from 20,000 psi (138 MPa) to 1000 psi (7 MPa) and solar control laminates comprising the solar control composition of the invention.Type: ApplicationFiled: December 22, 2009Publication date: April 22, 2010Inventors: Richard Allan Hayes, Richard A. Fugiel, Thomas R. Phillips, Lee A. Silverman, Jason S. Wall
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Publication number: 20100098953Abstract: Provided are compositions comprising infrared absorptive inorganic nanoparticles and an ethylene copolymer, and methods to produce the compositions. The infrared absorptive inorganic nanoparticles preferably include antimony tin oxide (ATO), indium tin oxide (ITO), lanthanum hexaboride (LaB6), or mixtures thereof. Also provided are polymer blends, polymeric films and sheets, solar control laminates, and processes to produce the polymer blends, polymeric films and sheets and solar control laminates.Type: ApplicationFiled: July 14, 2005Publication date: April 22, 2010Inventors: Richard A. Hayes, Thomas R. Phillips, Lee A. Silverman
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Publication number: 20100079721Abstract: Provided are multilayer laminates having one or more layers comprising twisted nematic liquid crystals and one or more layers of a polymeric sheet. The twisted nematic liquid crystal layers reflect infrared radiation. Thus, the multilayer laminates are useful to reduce the transmission of infrared energy. For example, in some embodiments the multilayer laminates are useful as windows to reduce energy consumption necessary to cool the interior of a structure such as an automobile or building. Preferably, the multilayer laminates retain one or more of the beneficial properties of safety glass. The multilayer laminates may include additional layers such as infrared absorbing layers, half wave plates, and the like, to minimize the transmission of infrared energy. The multilayer laminates may also include further additional layers such as polymeric films, polymeric sheets, rigid sheets, and the like.Type: ApplicationFiled: September 30, 2008Publication date: April 1, 2010Inventors: KAI QI, LEE A. SILVERMAN, MARC B. GOLDFINGER, RICHARD ALLEN HAYES, JERREL C. ANDERSON
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Patent number: 7622192Abstract: Provided is a solar control composition comprising an infrared absorbing phthalocyanine, naphthalocyanine or rylene compound and an ethylene acid copolymer or an ionomer of an ethylene acid copolymer. Further provided are solar control laminates comprising the solar control composition of the invention.Type: GrantFiled: December 28, 2006Date of Patent: November 24, 2009Assignee: E.I. du Pont de Nemours and CompanyInventors: Richard A. Fugiel, Richard Allen Hayes, Walter Mahler, Thomas R. Phillips, Lee A. Silverman