Patents by Inventor Neil B. Cramer

Neil B. Cramer 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: 8962709
    Abstract: The invention includes a new photopolymerizable resin system for dental restorative materials. The resin system utilizes a thiol-ene component as the reactive diluent in dimethacrylate systems. The ternary resin system comprises a thiol monomer, an ene monomer and a dimethacrylate monomer. The system of the invention has enhanced overall functional group conversion, improved polymer mechanical properties, and reduced shrinkage stress of the ternary system when compared to either traditional dimethacrylate or thiol-ene resin systems.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: February 24, 2015
    Assignee: The Regents of the University of Colorado, a Body Corporate
    Inventors: Christopher N. Bowman, Neil B. Cramer
  • Publication number: 20150009456
    Abstract: A resizable polymer-stabilized, thermotropic liquid crystal device formulation is used in passive or active light-regulating and temperature-regulating films, materials and devices, including construction materials. Implementations of the device may be composed of five basic elements: one or more transparent substrates, a transparent surface treatment, a liquid crystal mixture, a stabilizing polymer, and spacer beads. The polymer-stabilized liquid crystal is coated and cured on at least one substrate. The transparent surface treatment and the stabilizing polymer network are selected to provide phase separation, curing, and adhesion within the LC mixture. The substrate or substrates may be polarizing or nonpolarizing.
    Type: Application
    Filed: September 8, 2014
    Publication date: January 8, 2015
    Inventors: Richard M. Powers, Wil McCarthy, Neil B. Cramer, Christopher M. Caldwell, Michael Pickford, Matthew B. Kish, Andrew L. LaFrate
  • Patent number: 8828176
    Abstract: A resizable polymer-stabilized, thermotropic liquid crystal device formulation is used in passive or active light-regulating and temperature-regulating films, materials and devices, including construction materials. Implementations of the device may be composed of five basic elements: one or more transparent substrates, a transparent surface treatment, a liquid crystal mixture, a stabilizing polymer, and spacer beads. The polymer-stabilized liquid crystal is coated and cured on at least one substrate. The transparent surface treatment and the stabilizing polymer network are selected to provide phase separation, curing, and adhesion within the LC mixture. The substrate or substrates may be polarizing or nonpolarizing.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: September 9, 2014
    Assignee: Ravenbrick LLC
    Inventors: Richard M. Powers, Wil McCarthy, Neil B. Cramer, Christopher M. Caldwell, Michael Pickford, Matthew B. Kish, Andrew L. LaFrate
  • Publication number: 20120256338
    Abstract: The disclosure provides a new photopolymerizable resin system for dental restorative materials. The resin system utilizes a thiol-ene component as the reactive diluent in dimethacrylate systems. The ternary resin system comprises a thiol monomer, an ene monomer and a dimethacrylate monomer. Use of an off-stoichiometric ratio of thiol:ene functional groups in favor of excess thiols results in enhanced overall functional group conversion, improved polymer mechanical properties, and reduced shrinkage stress of the ternary system when compared to either traditional dimethacrylate or thiol-ene resin systems.
    Type: Application
    Filed: May 16, 2012
    Publication date: October 11, 2012
    Applicant: The Regents of the University of Colorado, a body corporate
    Inventors: Christopher N. Bowman, Neil B. Cramer
  • Patent number: 8192673
    Abstract: The disclosure provides a new photopolymerizable resin system for dental restorative materials. The resin system utilizes a thiol-ene component as the reactive diluent in dimethacrylate systems. The ternary resin system comprises a thiol monomer, an ene monomer and a dimethacrylate monomer. Use of an off-stoichiometric ratio of thiol:ene functional groups in favor of excess thiols results in enhanced overall functional group conversion, improved polymer mechanical properties, and reduced shrinkage stress of the ternary system when compared to either traditional dimethacrylate or thiol-ene resin systems.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: June 5, 2012
    Assignee: University of Kansas
    Inventors: Christopher N. Bowman, Neil B. Cramer
  • Publication number: 20110234944
    Abstract: A resizable polymer-stabilized, thermotropic liquid crystal device formulation is used in passive or active light-regulating and temperature-regulating films, materials and devices, including construction materials. Implementations of the device may be composed of five basic elements: one or more transparent substrates, a transparent surface treatment, a liquid crystal mixture, a stabilizing polymer, and spacer beads. The polymer-stabilized liquid crystal is coated and cured on at least one substrate. The transparent surface treatment and the stabilizing polymer network are selected to provide phase separation, curing, and adhesion within the LC mixture. The substrate or substrates may be polarizing or nonpolarizing.
    Type: Application
    Filed: March 29, 2011
    Publication date: September 29, 2011
    Applicant: RavenBrick LLC
    Inventors: Richard M. Powers, Wil McCarthy, Neil B. Cramer, Christopher M. Caldwell, Michael Pickford, Matthew B. Kish, Andrew L. LaFrate
  • Publication number: 20090270528
    Abstract: The disclosure provides a new photopolymerizable resin system for dental restorative materials. The resin system utilizes a thiol-ene component as the reactive diluent in dimethacrylate systems. The ternary resin system comprises a thiol monomer, an ene monomer and a dimethacrylate monomer. Use of an off-stoichiometric ratio of thiol:ene functional groups in favor of excess thiols results in enhanced overall functional group conversion, improved polymer mechanical properties, and reduced shrinkage stress of the ternary system when compared to either traditional dimethacrylate or thiol-ene resin systems.
    Type: Application
    Filed: March 31, 2009
    Publication date: October 29, 2009
    Applicant: The Regents of the University of Colorado, a body corporate
    Inventors: Christopher N. Bowman, Neil B. Cramer