Patents by Inventor Stuart N. Richards

Stuart N. Richards 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).

  • Patent number: 11649309
    Abstract: Polymeric dispersants are disclosed that include an acrylic backbone at least one pendantly attached imide group, wherein the carbonyl of the imide are chemically bonded to a fused aromatic ring. The aromatic ring can be substituted with various electron withdrawing or releasing groups. Desirably dispersant also includes solvent-solubilising chains of polyether, polyester, polyacrylate, and or polyolefin.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: May 16, 2023
    Assignee: Lubrizol Advanced Materials, Inc
    Inventors: Andrew J. Shooter, Dean Thetford, Robert A. Jennings, Stuart N. Richards
  • Publication number: 20200325264
    Abstract: Polymeric dispersants are disclosed that include an acrylic backbone at least one pendantly attached imide group, wherein the carbonyl of the imide are chemically bonded to a fused aromatic ring. The aromatic ring can be substituted with various electron withdrawing or releasing groups. Desirably dispersant also includes solvent-solubilising chains of polyether, polyester, polyacrylate, and or polyolefin.
    Type: Application
    Filed: June 26, 2020
    Publication date: October 15, 2020
    Inventors: Andrew J. Shooter, Dean Thetford, Robert A. Jennings, Stuart N. Richards
  • Patent number: 10745506
    Abstract: Polymeric dispersants are disclosed that include an acrylic backbone at least one pendantly attached imide group, wherein the carbonyl of the imide are chemically bonded to a fused aromatic ring. The aromatic ring can be substituted with various electron withdrawing or releasing groups. Desirably dispersant also includes solvent-solubilising chains of polyether, polyester, polyacrylate, and or polyolefin.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: August 18, 2020
    Inventors: Andrew J. Shooter, Dean Thetford, Robert A. Jennings, Stuart N. Richards
  • Patent number: 10442884
    Abstract: A polyurethane dispersant is described that comprises a reaction product of a polyisocyanate with a) a component supplying a anchoring imide group wherein the carbonyl groups of the imide are bonded to a fused or non-fused aromatic ring, b) at least one solvent-solubilizing chain, and other optional components to build molecular weight or modify the interaction of the dispersant with various particulates or continuous media.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: October 15, 2019
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Andrew J. Shooter, Dean Thetford, Stuart N Richards, Robert A. Jennings
  • Patent number: 10308836
    Abstract: Polymeric dispersants are disclosed that include a urethane backbone at least one pendantly attached imide group, wherein the carbonyl of the imide are chemically bonded to a single or fused aromatic ring. The aromatic ring can be substituted with various electron withdrawing or releasing groups. The dispersant also includes solvent-solubilizing chains of polyether, polyester, polyacrylate, and or polyolefin Desirably, the imide groups are derived from an imide that has two isocyanate reactive groups such that the imide is attached to the urethane backbone at two separate locations.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: June 4, 2019
    Inventors: Andrew J. Shooter, Dean Thetford, Robert A. Jennings, Stuart N. Richards
  • Patent number: 10100152
    Abstract: The present invention relates to a polymer, and a composition containing a particulate solid, an aqueous medium, and a polymer chain having at least one fused aromatic imide pendant group. The invention further provides compositions for millbases, dispersions, coatings and inks.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: October 16, 2018
    Inventors: Andrew J. Shooter, Dean Thetford, Stuart N. Richards
  • Publication number: 20170088673
    Abstract: The present invention relates to a polymer, and a composition containing a particulate solid, an aqueous medium, and a polymer chain having at least one fused aromatic imide pendant group. The invention further provides compositions for millbases, dispersions, coatings and inks.
    Type: Application
    Filed: December 14, 2016
    Publication date: March 30, 2017
    Inventors: Andrew J. Shooter, Dean Thetford, Stuart N. Richards
  • Patent number: 9540486
    Abstract: The present invention relates to a composition containing a particulate solid, a polar or non-polar organic medium, and a polymer chain having at least one fused aromatic imide pendant group. The invention further provides compositions for coatings, inks, toners, plastic materials (such as thermoplastics), plasticizers, plastisols, crude grinding and flush.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: January 10, 2017
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Dean Thetford, Andrew J. Shooter, Stuart N. Richards
  • Patent number: 9534123
    Abstract: The present invention relates to a polymer, and a composition containing a particulate solid, an aqueous medium, and a polymer chain having at least one fused aromatic imide pendant group. The invention further provides compositions for millbases, dispersions, coatings and inks.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: January 3, 2017
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Andrew J. Shooter, Dean Thetford, Stuart N. Richards
  • Publication number: 20160268633
    Abstract: A polymeric polycarboxylic acid functionalized with polyether groups is disclosed as an additive to a lithium-ion battery to help improve properties such as energy density, cycle durability, or other durability issues.
    Type: Application
    Filed: October 10, 2014
    Publication date: September 15, 2016
    Inventors: John D. Schofield, Elliot Coulbeck, Stuart N. Richards, Patrick J. Sunderland, Dean Thetford
  • Publication number: 20160257774
    Abstract: Polymeric dispersants are disclosed that include an acrylic backbone at least one pendantly attached imide group, wherein the carbonyl of the imide are chemically bonded to a fused aromatic ring. The aromatic ring can be substituted with various electron withdrawing or releasing groups. Desirably dispersant also includes solvent-solubilising chains of polyether, polyester, polyacrylate, and or polyolefin.
    Type: Application
    Filed: October 29, 2014
    Publication date: September 8, 2016
    Inventors: Andrew J. Shooter, Dean Thetford, Robert A. Jennings, Stuart N. Richards
  • Publication number: 20160251537
    Abstract: The invention relates to a composition containing a polymer obtained by polymerising (1) a mono-vinyl monomer with one or more carboxylic acid groups to form a polymer with at least 2 to 200, or 5 to 150, or 10 to 100, or 15 to 50 repeat units, and (2) reacting the polymer of (1) with a primary hydrocarbyl amine and polyoxyalkylene primary amine (typically polyetheramine). The invention further relates to a composition containing a particulate solid, a liquid medium, and the polymer. The invention further relates to the use of the polymer as a dispersant.
    Type: Application
    Filed: May 6, 2016
    Publication date: September 1, 2016
    Inventors: Andrew J. Shooter, Stuart N. Richards
  • Publication number: 20160251523
    Abstract: Polymeric dispersants are disclosed that include a urethane backbone at least one pendantly attached imide group, wherein the carbonyl of the imide are chemically bonded to a single or fused aromatic ring. The aromatic ring can be substituted with various electron withdrawing or releasing groups. The dispersant also includes solvent-solubilising chains of polyether, polyester, polyacrylate, and or polyolefin Desirably, the imide groups are derived from an imide that has two isocyanate reactive groups such that the imide is attached to the urethane backbone at two separate locations.
    Type: Application
    Filed: October 24, 2014
    Publication date: September 1, 2016
    Inventors: Andrew J. Shooter, Dean Thetford, Robert A. Jennings, Stuart N. Richards
  • Publication number: 20160237196
    Abstract: A polyurethane dispersant is described that comprises a reaction product of a polyisocyanate with a) a component supplying a anchoring imide group wherein the carbonyl groups of the imide are bonded to a fused or non-fused aromatic ring, b) at least one solvent-solubilising chain, and other optional components to build molecular weight or modify the interaction of the dispersant with various particulates or continuous media.
    Type: Application
    Filed: April 28, 2016
    Publication date: August 18, 2016
    Inventors: Andrew J. Shooter, Dean Thetford, Stuart N. Richards, Robert A. Jennings
  • Patent number: 9416280
    Abstract: The invention relates to a composition containing a particulate solid, an organic or aqueous medium, and a copolymer containing less than 25 mol % of residues of monomers comprising a dicarboxylic acid, or anhydride thereof. The invention further relates to novel copolymers, and the use of the copolymers as a dispersant.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: August 16, 2016
    Assignee: Lubrizol Limited
    Inventor: Stuart N. Richards
  • Patent number: 9315610
    Abstract: The present invention provides a non-aqueous composition containing a particulate solid, an organic medium and polyurethane dispersant with a substantially linear anchoring segment pendant tertiary amine group(s) from said anchoring segment and terminally attached solvent-solubilising terminal chains of a polyester, polyether, or polyacrylate including mixtures of such terminal chains.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: April 19, 2016
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Andrew J. Shooter, Stuart N. Richards
  • Publication number: 20150148476
    Abstract: The present invention relates to a composition containing a particulate solid, a polar or non-polar organic medium, and a polymer chain having at least one fused aromatic imide pendant group. The invention further provides compositions for coatings, inks, toners, plastic materials (such as thermoplastics), plasticisers, plastisols, crude grinding and flush.
    Type: Application
    Filed: April 25, 2013
    Publication date: May 28, 2015
    Inventors: Dean Thetford, Andrew J. Shooter, Stuart N. Richards
  • Patent number: 9034979
    Abstract: A composition comprising particulate solid (typically a pigment or filler), an organic medium (typically the organic medium may be a plastics material or an organic liquid) and a polyacrylic copolymer.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: May 19, 2015
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Patrick J. Sunderland, Dean Thetford, Elliot Coulbeck, Stuart N. Richards
  • Publication number: 20150112020
    Abstract: The present invention relates to a polymer, and a composition containing a particulate solid, an aqueous medium, and a polymer chain having at least one fused aromatic imide pendant group. The invention further provides compositions for millbases, dispersions, coatings and inks.
    Type: Application
    Filed: April 24, 2013
    Publication date: April 23, 2015
    Applicant: Lubrizol Advanced MAterials, Inc.
    Inventors: Andrew J. Shooter, Dean Thetford, Stuart N. Richards
  • Patent number: 8979990
    Abstract: The invention relates to a composition containing a polyepoxide with polyether lateral chains and pendant hydrocarbyl groups. The invention further relates to a composition containing a particulate solid, an organic or aqueous medium, and a polyepoxide with polyether lateral chains and pendant hydrocarbyl groups. The invention further relates to novel compounds, and the use of the polyepoxide with polyether lateral chains and pendant hydrocarbyl groups as a dispersant.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: March 17, 2015
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Andrew J. Shooter, Stuart N. Richards