Patents by Inventor David M. Deans

David M. Deans 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: 20240344124
    Abstract: One can enrich nucleic acid (RNA or DNA) from within a complex mixture in a sequence-specific manner by using a mutant of a Cas enzyme lacking nuclease activity, for example a mutant of Cas13a (dCas) from Leptotrichia wadeii. The nucleic acid is bound by the mutant protein as directed by guide RNA molecules (crRNA) and purified after association with an appropriate surface, such as quantum dots or functionalized beads. The nucleic acid is separated from the Cas and purified after precipitation or interaction with another surface. The resulting product can be directly processed via long-read sequencing.
    Type: Application
    Filed: November 15, 2023
    Publication date: October 17, 2024
    Inventors: Christopher M. Green, Joseph R. Spangler, Tomasz A. Leski, Kimihiro Susumu, Sebastian A. Diaz, Igor L. Medintz, David A. Stenger, Scott N. Dean
  • Patent number: 10696771
    Abstract: Provided is a method for preparing a latex composition, comprising providing an ethylene copolymer comprising copolymerized units of ethylene and copolymerized units of at least one polar comonomer; dissolving the ethylene copolymer with one or more latex monomers to prepare a solution; mixing the solution with water; optionally adding a surfactant or protectant colloid to form an aqueous emulsion; and polymerizing the latex monomer in the emulsion to form a latex composition comprising the ethylene copolymer and a latex polymer. Further provided are the emulsion polymerization product and the mini-emulsion polymerization product of at least one ethylene copolymer substantially dissolved in at least one latex monomer, such as an acrylic, styrene or vinyl monomer. Finally, formulated products comprising or produced from the emulsion or mini-emulsion polymerization product and articles comprising or produced from the formulated products are provided.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: June 30, 2020
    Assignee: Performance Materials NA, Inc.
    Inventors: David D Zhang, David M Dean, Elizabeth R Griffin, Richard Allen Hayes, Donna Lynn Visioli
  • Publication number: 20190322828
    Abstract: The present invention relates to the field of foamable compositions having an ethylene-based co-polymer containing a carbon monoxide co-monomer.
    Type: Application
    Filed: November 1, 2017
    Publication date: October 24, 2019
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: John P. Bishop, David M. Dean, Erdogan Kiran
  • Publication number: 20160280905
    Abstract: Provided is a method for preparing a latex composition, comprising providing an ethylene copolymer comprising copolymerized units of ethylene and copolymerized units of at least one polar comonomer; dissolving the ethylene copolymer with one or more latex monomers to prepare a solution; mixing the solution with water; optionally adding a surfactant or protectant colloid to form an aqueous emulsion; and polymerizing the latex monomer in the emulsion to form a latex composition comprising the ethylene copolymer and a latex polymer. Further provided are the emulsion polymerization product and the mini-emulsion polymerization product of at least one ethylene copolymer substantially dissolved in at least one latex monomer, such as an acrylic, styrene or vinyl monomer. Finally, formulated products comprising or produced from the emulsion or mini-emulsion polymerization product and articles comprising or produced from the formulated products are provided.
    Type: Application
    Filed: March 28, 2016
    Publication date: September 29, 2016
    Inventors: DAVID D. ZHANG, DAVID M. DEAN, ELIZABETH R. GRIFFIN, RICHARD ALLEN HAYES, DONNA LYNN VISIOLI
  • Publication number: 20160076727
    Abstract: A lighting device comprising a light emitting diode and a cover comprising an ionomer composition that has improved optical properties. The ionomer composition comprises an ionomer that is produced by partially neutralizing a precursor acid copolymer that has a melt index of about 20 to about 400 g/10 min. The precursor acid copolymer comprises copolymerized units of an ?-olefin having 2 to 10 carbons and, based on the total weight of the precursor acid copolymer, about 12 to about 30 weight % of copolymerized units of an ?,?-ethylenically unsaturated carboxylic acid having 3 to 8 carbons.
    Type: Application
    Filed: September 17, 2015
    Publication date: March 17, 2016
    Inventors: STEVEN C. PESEK, Shannon D. Meerscheidt, W. Alexander Shaffer, David M. Dean, Sebastien Tindilliere, George Wyatt Prejean, William J. Glick, Charles Anthony Smith, Karlheinz Hausmann, Loic Pierre Rolland
  • Publication number: 20150357494
    Abstract: A gas permeation barrier structure comprises a rigid or flexible substrate, an oxide or nitride layer deposited thereon by atomic layer deposition (ALD), and a polymeric clear coat. The presence of the polymeric clear coat permits the barrier structure to maintain resistance to permeation of gases including oxygen and water vapor longer than would a structure in which the ALD layer is directly exposed to atmosphere.
    Type: Application
    Filed: January 30, 2014
    Publication date: December 10, 2015
    Inventors: David M. Dean, Carl Brent Douglas, Nicholas J. Glassmaker
  • Patent number: 8455574
    Abstract: The present invention is a composite composition comprising cellulosic material in a polymeric matrix comprising a thermoplastic polymer, and at least one compatibilizing copolymer prepared from an olefin and a functional comonomer, and articles prepared from such composites. The composition of the present invention can be useful as a synthetic wood.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: June 4, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventor: David M. Dean
  • Patent number: 8431650
    Abstract: A process is provided for preparing polymer composites from compositions comprising i) a polyolefin, ii) a polymer selected from the group consisting of polymers having hydroxyl groups and polymers having amino groups and iii) a polar ethylene copolymer having copolymerized units selected from the group consisting of C4-C8 unsaturated anhydrides, monoesters of C4-C8 unsaturated acids having at least two carboxylic acid groups, diesters of C4-C8 unsaturated acids having at least two carboxylic acid groups and mixtures thereof. The process is suitable for use with recycle streams that contain polymeric materials that are laminates or composites of dissimilar polymers.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: April 30, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventor: David M. Dean
  • Patent number: 8277139
    Abstract: A hand-held cosmetic powder applicator brush apparatus for applying cosmetic powders such as facial powders and other powders to a user. The brush apparatus comprises a housing having a chamber for holding a powder to be dispensed and a valve mechanism for selectively opening and closing the chamber to a brush mounted on the housing so that powder in the housing may be dispensed to the bristles of the brush. The valve is operable by rotating an upper housing section such as a sleeve on the housing in a first direction to cause such opening. When the brush is not used, the upper housing section is rotated in the opposite direction to cause the valve mechanism to close. There is also a shield which extends around a portion of the brush to engage and protect the bristles when an outer cap is placed over the brush.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: October 2, 2012
    Assignee: David M. Deans and Jerilyne T. Deans Co-Trustees for the David and Jerilyne Deans Family Trust
    Inventors: David M. Deans, Jacky L. Gunter, Jacquelyn I. Medina
  • Publication number: 20120067924
    Abstract: Method and apparatus for dispensing a fluid using a dispensing container employing an airless pump, which may employ abstract or non-cylindrical shapes. The airless pump uses a chamber enclosing a fluid with a piston comprising a surface of the chamber. The chamber has an interior volume with a substantially uniform cross section along a height of the chamber, to which the piston is conformed allowing the piston to transverse the height of the chamber. The gaps between the piston and the interior of the chamber are sealed with a multi-lobe ring seal.
    Type: Application
    Filed: September 21, 2010
    Publication date: March 22, 2012
    Inventor: David M. Deans
  • Patent number: 7875681
    Abstract: A process is provided for preparing polymer composites from compositions comprising i) a polyolefin, ii) a polymer selected from the group consisting of polymers having hydroxyl groups and polymers having amino groups and iii) a polar ethylene copolymer having copolymerized units selected from the group consisting of C4-C8 unsaturated anhydrides, monoesters of C4-C8 unsaturated acids having at least two carboxylic acid groups, diesters of C4-C8 unsaturated acids having at least two carboxylic acid groups and mixtures thereof. The process is suitable for use with recycle streams that contain polymeric materials that are laminates or composites of dissimilar polymers.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: January 25, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: David M. Dean
  • Patent number: 7775737
    Abstract: A hand-held cosmetic powder applicator brush apparatus for applying cosmetic powders such as facial powders and other powders to a user. The brush apparatus comprises a housing having a chamber for holding a powder to be dispensed and a valve mechanism for selectively opening and closing the chamber to a brush mounted on the housing so that powder in the housing may be dispensed to the bristles of the brush. The valve is operable by rotating an upper housing section such as a sleeve on the housing in a first direction to cause such opening. When the brush is not used, the upper housing section is rotated in the opposite direction to cause the valve mechanism to close. There is also a shield which extends around a portion of the brush to engage and protect the bristles when an outer cap is placed over the brush.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: August 17, 2010
    Inventors: David M. Deans, Jacky L. Gunter, Jacquelyn I. Medina
  • Publication number: 20100144952
    Abstract: A process is provided for preparing polymer composites from compositions comprising i) a polyolefin, ii) a polymer selected from the group consisting of polymers having hydroxyl groups and polymers having amino groups and iii) a polar ethylene copolymer having copolymerized units selected from the group consisting of C4-C8 unsaturated anhydrides, monoesters of C4-C8 unsaturated acids having at least two carboxylic acid groups, diesters of C4-C8 unsaturated acids having at least two carboxylic acid groups and mixtures thereof. The process is suitable for use with recycle streams that contain polymeric materials that are laminates or composites of dissimilar polymers.
    Type: Application
    Filed: February 18, 2010
    Publication date: June 10, 2010
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: DAVID M. DEAN
  • Publication number: 20100144953
    Abstract: A process is provided for preparing polymer composites from compositions comprising i) a polyolefin, ii) a polymer selected from the group consisting of polymers having hydroxyl groups and polymers having amino groups and iii) a polar ethylene copolymer having copolymerized units selected from the group consisting of C4-C8 unsaturated anhydrides, monoesters of C4-C8 unsaturated acids having at least two carboxylic acid groups, diesters of C4-C8 unsaturated acids having at least two carboxylic acid groups and mixtures thereof. The process is suitable for use with recycle streams that contain polymeric materials that are laminates or composites of dissimilar polymers.
    Type: Application
    Filed: February 18, 2010
    Publication date: June 10, 2010
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: DAVID M. DEAN
  • Patent number: 7700692
    Abstract: A process is provided for preparing polymer composites from compositions comprising i) a polyolefin, ii) a polymer selected from the group consisting of polymers having hydroxyl groups and polymers having amino groups and iii) a polar ethylene copolymer having copolymerized units selected from the group consisting of C4-C8 unsaturated anhydrides, monoesters of C4-C8 unsaturated acids having at least two carboxylic acid groups, diesters of C4-C8 unsaturated acids having at least two carboxylic acid groups and mixtures thereof. The process is suitable for use with recycle streams that contain polymeric materials that are laminates or composites of dissimilar polymers.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: April 20, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: David M. Dean
  • Publication number: 20100069562
    Abstract: A process is provided for preparing polymer composites from compositions comprising i) a polyolefin, ii) a polymer selected from the group consisting of polymers having hydroxyl groups and polymers having amino groups and iii) a polar ethylene copolymer having copolymerized units selected from the group consisting of C4-C8 unsaturated anhydrides, monoesters of C4-C8 unsaturated acids having at least two carboxylic acid groups, diesters of C4-C8 unsaturated acids having at least two carboxylic acid groups and mixtures thereof. The process is suitable for use with recycle streams that contain polymeric materials that are laminates or composites of dissimilar polymers.
    Type: Application
    Filed: November 20, 2009
    Publication date: March 18, 2010
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventor: David M. Dean
  • Publication number: 20090041530
    Abstract: A hand-held cosmetic powder applicator brush apparatus for applying cosmetic powders such as facial powders and other powders to a user. The brush apparatus comprises a housing having a chamber for holding a powder to be dispensed and a valve mechanism for selectively opening and closing the chamber to a brush mounted on the housing so that powder in the housing may be dispensed to the bristles of the brush. The valve is operable by rotating an upper housing section such as a sleeve on the housing in a first direction to cause such opening. When the brush is not used, the upper housing section is rotated in the opposite direction to cause the valve mechanism to close. There is also a shield which extends around a portion of the brush to engage and protect the bristles when an outer cap is placed over the brush.
    Type: Application
    Filed: October 31, 2007
    Publication date: February 12, 2009
    Inventors: David M. Deans, Jacky L. Gunter, Jacquelyn I. Medina
  • Patent number: 7326758
    Abstract: The present invention is fluorine-containing ethylene copolymer composition and a process of preparing same. The ethylene copolymers of the present invention are melt processible fluorinated copolymers having surface energies of less than about 25 dynes/cm.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: February 5, 2008
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: David M. Dean
  • Patent number: 7279234
    Abstract: Disclosed are methods of using a transparent, luminescent polymer for transparent marking and/or labeling for identity verification purposes. Also disclosed are sheets, films, markers, labels and taggants comprising transparent, luminescent polymers. Also disclosed are articles labeled with a transparent, luminescent polymer. This invention particularly relates to use of transparent, luminescent polymer compositions comprising ethylene (meth)acrylic acid copolymers and rare earth ions and transparent, luminescent polymer compositions comprising methyl (meth)acrylate/(meth)acrylic acid copolymers, fatty acids and rare earth ions for these purposes.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: October 9, 2007
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: David M. Dean
  • Patent number: 7157508
    Abstract: Disclosed are a thermoplastic polymer-linked-asphalt composition and a process for making a thermoplastic polymer-linked-asphalt. More particularly, the present invention relates to the reaction and resultant linking of a combination of epoxide-containing polymers and anhydride-containing polymers to asphalt to form a polymer-linked-asphalt composition having higher softening points. The improved polymer-linked-asphalt product is particularly useful in roofing applications.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: January 2, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: David M. Dean