Patents by Inventor Jeannette M. O'Brien

Jeannette M. O'Brien 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).

  • Methods of preparing polyhemiaminals and polyhexahydrotriazines
    Patent number: 9951184
    Abstract: Polyhexahydrotriazine (PHT) film layers are formed by a process comprising heating a first mixture comprising i) a solvent, ii) paraformaldehyde, and iii) a diamine monomer comprising two primary aromatic amine groups at a temperature of about 20° C. to less than 150° C. This heating step forms a stable polyhemiaminal (PHA) in solution, which can be cast on a surface of a substrate, thereby forming an initial film layer comprising the PHA. The initial film layer is heated at a temperature of 180° C. to about 280° C., thereby converting the PHA film layer to a PHT film layer. Young's moduli of about 8 GPA to about 14 GPA have been observed for the PHT film layers.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: April 24, 2018
    Assignee: International Business Machines Corporation
    Inventors: James L. Hedrick, Jeannette M. O'Brien, Kumar R. Virwani
  • METHODS OF PREPARING POLYHEMIAMINALS AND POLYHEXAHYDROTRIAZINES
    Publication number: 20160083520
    Abstract: Polyhexahydrotriazine (PHT) film layers are formed by a process comprising heating a first mixture comprising i) a solvent, ii) paraformaldehyde, and iii) a diamine monomer comprising two primary aromatic amine groups at a temperature of about 20° C. to less than 150° C. This heating step forms a stable polyhemiaminal (PHA) in solution, which can be cast on a surface of a substrate, thereby forming an initial film layer comprising the PHA. The initial film layer is heated at a temperature of 180° C. to about 280° C., thereby converting the PHA film layer to a PHT film layer. Young's moduli of about 8 GPA to about 14 GPA have been observed for the PHT film layers.
    Type: Application
    Filed: December 4, 2015
    Publication date: March 24, 2016
    Inventors: James L. Hedrick, Jeannette M. O'Brien, Kumar R. Virwani
  • Methods of preparing polyhemiaminals and polyhexahydrotriazines
    Patent number: 9243107
    Abstract: Polyhexahydrotriazine (PHT) film layers are formed by a process comprising heating a first mixture comprising i) a solvent, ii) paraformaldehyde, and iii) a diamine monomer comprising two primary aromatic amine groups at a temperature of about 20° C. to less than 150° C. This heating step forms a stable polyhemiaminal (PHA) in solution, which can be cast on a surface of a substrate, thereby forming an initial film layer comprising the PHA. The initial film layer is heated at a temperature of 180° C. to about 280° C., thereby converting the PHA film layer to a PHT film layer. Young's moduli of about 8 GPA to about 14 GPA have been observed for the PHT film layers.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: January 26, 2016
    Assignee: International Business Machines Corporation
    Inventors: James L. Hedrick, Hans W. Horn, Gavin O. Jones, Jeannette M. O'Brien, Kumar R. Virwani
  • METHODS OF PREPARING POLYHEMIAMINALS AND POLYHEXAHYDROTRIAZINES
    Publication number: 20150104579
    Abstract: Polyhexahydrotriazine (PHT) film layers are formed by a process comprising heating a first mixture comprising i) a solvent, ii) paraformaldehyde, and iii) a diamine monomer comprising two primary aromatic amine groups at a temperature of about 20° C. to less than 150° C. This heating step forms a stable polyhemiaminal (PHA) in solution, which can be cast on a surface of a substrate, thereby forming an initial film layer comprising the PHA. The initial film layer is heated at a temperature of 180° C. to about 280° C., thereby converting the PHA film layer to a PHT film layer. Young's moduli of about 8 GPA to about 14 GPA have been observed for the PHT film layers.
    Type: Application
    Filed: October 10, 2013
    Publication date: April 16, 2015
    Applicant: International Business Machines Corporation
    Inventors: James L. Hedrick, Hans W. Horn, Gavin O. Jones, Jeannette M. O'Brien, Kumar R. Virwani