Patents by Inventor Richard Douglas Hreha

Richard Douglas Hreha 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).

  • METHOD OF MAKING AND USING SHAPE MEMORY POLYMER COMPOSITE PATCHES
    Publication number: 20140024276
    Abstract: A method of repairing a composite component having a damaged area including: laying a composite patch over the damaged area; activating the shape memory polymer resin to easily and quickly mold said patch to said damaged area; deactivating said shape memory polymer so that said composite patch retains the molded shape; and bonding said composite patch to said damaged part.
    Type: Application
    Filed: September 27, 2013
    Publication date: January 23, 2014
    Applicant: Cornerstone Research Group, Inc.
    Inventors: Patrick Joseph Hood, Sean Patrick Garrigan, Frank Auffinger, III, Tat Hung Tong, Benjamin John Vining, Richard Douglas Hreha, Thomas Joseph Barnell
  • Shape memory cyanate ester copolymers
    Patent number: 8039572
    Abstract: Cyanate ester shape memory polymers (SMP). The polymers are preferably formed via reaction of a multifunctional cyanate ester and a mono functional cyanate ester and exist, in one inventive aspect, in the form of a cross-linked thermoset network. Optional catalysts and structural modifiers may be added to the reaction moieties to help control the glass transition temperature of the resulting SMP to greater than 0° C., preferably from about 150° C.-300° C.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: October 18, 2011
    Assignee: Cornerstone Research Group, Inc.
    Inventors: Tat Hung Tong, Richard Douglas Hreha, Benjamin John Vining
  • METHOD OF MAKING AND USING SHAPE MEMORY POLYMER PATCHES
    Publication number: 20100221523
    Abstract: A method of repairing a composite component having a damaged area including: laying a composite patch over the damaged area; activating the shape memory polymer resin to easily and quickly mold said patch to said damaged area; deactivating said shape memory polymer so that said composite patch retains the molded shape; and bonding said composite patch to said damaged part.
    Type: Application
    Filed: March 8, 2010
    Publication date: September 2, 2010
    Applicant: Cornerstone Research Group, Inc.
    Inventors: Patrick Joseph Hood, Sean Patrick Garrigan, Frank Auffinger, Tat Hung Tong, Benjamin John Vining, Richard Douglas Hreha, Thomas Joseph Barnell
  • METHOD OF MAKING AND USING SHAPE MEMORY POLYMER COMPOSITE PATCHES
    Publication number: 20100196705
    Abstract: A method of repairing a composite component having a damaged area including: laying a composite patch over the damaged area; activating the shape memory polymer resin to easily and quickly mold said patch to said damaged area; deactivating said shape memory polymer so that said composite patch retains the molded shape; and bonding said composite patch to said damaged part.
    Type: Application
    Filed: April 7, 2010
    Publication date: August 5, 2010
    Applicant: Cornerstone Research Group, Inc.
    Inventors: Patrick Joseph Hood, Sean Patrick Garrigan, Frank Auffinger, III, Tat Hung Tong, Benjamin John Vining, Richard Douglas Hreha, Thomas Joseph Barnell