Patents by Inventor Karin M. Hudson

Karin M. Hudson 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).

  • Porous polybenzimidazole resin and method of making same
    Patent number: 10273340
    Abstract: A porous polybenzimidazole (PBI) particulate resin is disclosed. This resin is easily dissolved at ambient temperatures and pressures. The resin is made by: dissolving a virgin PBI resin in a highly polar solvent; precipitating the dissolved PBI in a bath; and drying the precipitated PBI, the dried precipitated PBI being porous. The porous PBI resin may be dissolved by: mixing a porous PBI resin with a highly polar solvent at ambient temperatures and pressures to form a solution.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: April 30, 2019
    Assignee: PBI Performances Products, Inc.
    Inventors: John B. Hopkins, Jr., Karin M. Hudson, Gregory S. Copeland, Michael Gruender
  • POROUS POLYBENZIMIDAZOLE RESIN AND METHOD OF MAKING SAME
    Publication number: 20180044493
    Abstract: A porous polybenzimidazole (PBI) particulate resin is disclosed. This resin is easily dissolved at ambient temperatures and pressures. The resin is made by: dissolving a virgin PBI resin in a highly polar solvent; precipitating the dissolved PBI in a bath; and drying the precipitated PBI, the dried precipitated PBI being porous. The porous PBI resin may be dissolved by: mixing a porous PBI resin with a highly polar solvent at ambient temperatures and pressures to form a solution.
    Type: Application
    Filed: October 24, 2017
    Publication date: February 15, 2018
    Inventors: John B. Hopkins, JR., Karin M. Hudson, Gregory S. Copeland, Michael Gruender
  • Porous polybenzimidazole resin and method of making same
    Patent number: 9828479
    Abstract: A porous polybenzimidazole (PBI) particulate resin is disclosed. This resin is easily dissolved at ambient temperatures and pressures. The resin is made by: dissolving a virgin PBI resin in a highly polar solvent; precipitating the dissolved PBI in a bath; and drying the precipitated PBI, the dried precipitated PBI being porous. The porous PBI resin may be dissolved by: mixing a porous PBI resin with a highly polar solvent at ambient temperatures and pressures to form a solution.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: November 28, 2017
    Assignee: PBI Performance Products, Inc.
    Inventors: John B. Hopkins, Jr., Karin M. Hudson, Gregory S. Copeland, Michael Gruender
  • POROUS POLYBENZIMIDAZOLE RESIN AND METHOD OF MAKING SAME
    Publication number: 20130331470
    Abstract: A porous polybenzimidazole (PBI) particulate resin is disclosed. This resin is easily dissolved at ambient temperatures and pressures. The resin is made by: dissolving a virgin PBI resin in a highly polar solvent; precipitating the dissolved PBI in a bath; and drying the precipitated PBI, the dried precipitated PBI being porous. The porous PBI resin may be dissolved by: mixing a porous PBI resin with a highly polar solvent at ambient temperatures and pressures to form a solution.
    Type: Application
    Filed: July 3, 2013
    Publication date: December 12, 2013
    Applicant: PBI Performance Products Inc.
    Inventors: John B. Hopkins, JR., Karin M. Hudson, Gregory S. Copeland, Michael Gruender
  • POROUS POLYBENZIMIDAZOLE RESIN AND METHOD OF MAKING SAME
    Publication number: 20110189484
    Abstract: A porous polybenzimidazole (PBI) particulate resin is disclosed. This resin is easily dissolved at ambient temperatures and pressures. The resin is made by: dissolving a virgin PBI resin in a highly polar solvent; precipitating the dissolved PBI in a bath; and drying the precipitated PBI, the dried precipitated PBI being porous. The porous PBI resin may be dissolved by: mixing a porous PBI resin with a highly polar solvent at ambient temperatures and pressures to form a solution.
    Type: Application
    Filed: January 27, 2011
    Publication date: August 4, 2011
    Inventors: John B. Hopkins, JR., Karin M. Hudson, Gregory S. Copeland, Michael Gruender
  • Process for a two stage melt polymerization for the production of polybenzimidazole
    Patent number: 7504475
    Abstract: A process is presented for the production of high molecular weight polybenzimidazole, in two steps. Step one: provide a first reaction vessel and charge it with at least one aromatic hydrocarbon tetraamine, and a heterocyclic ring making up the dicarboxylic component. Heat the reactants under agitation. Terminate the agitation while continuing to heat the reaction mixture to about 230° C. while allowing the reaction mass to foam. Cool the reaction mass to a friable foamed mass. Crush the friable foamed mass to obtain a ground prepolymer. Step two; provide a second reaction vessel, transferring the ground prepolymer to it. A pressure wash of the first reaction vessel and the means for agitation to obtain a second ground prepolymer. Transfer the second ground prepolymer to the second reaction vessel. Heat the ground prepolymer and second ground prepolymer under agitation to a higher temperature than the first step until the desired degree of polymerization is achieved.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: March 17, 2009
    Assignee: PBI Performance Products, Inc.
    Inventors: Bobby G. Dawkins, J. Dean Baker, Rita H. Joiner, Karin M. Hudson