Patents by Inventor Martin Chiang

Martin Chiang 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).

  • Tensometer for simultaneously evaluating polymerization stresses, shrinkage and modulus development
    Patent number: 8857266
    Abstract: The present invention relates to apparatus and method for evaluating the development of PS during polymerization of dental restorative composites, which includes using a tensometer for measuring deflection of a calibrated cantilever beam induced by PS and calculating PS from the measured deflection. A tensometer according to an embodiment of the present invention can be used to quantify PS at varying beam locations and heights, and determine trend in PS development as a function of beam length. More importantly, in the present invention, the development of polymerization shrinkage and the elastic modulus can be simultaneously obtained in real time.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: October 14, 2014
    Assignee: The United States of America, as Represented by the Secretary of Commerce, The National Institute of Standards and Technology
    Inventor: Martin Chiang
  • TENSOMETER FOR SIMULTANEOUSLY EVALUATING POLYMERIZATION STRESSES, SHRINKAGE AND MODULUS DEVELOPMENT
    Publication number: 20120085178
    Abstract: The present invention relates to apparatus and method for evaluating the development of PS during polymerization of dental restorative composites, which includes using a tensometer for measuring deflection of a calibrated cantilever beam induced by PS and calculating PS from the measured deflection. A tensometer according to an embodiment of the present invention can be used to quantify PS at varying beam locations and heights, and determine trend in PS development as a function of beam length. More importantly, in the present invention, the development of polymerization shrinkage and the elastic modulus can be simultaneously obtained in real time.
    Type: Application
    Filed: October 27, 2011
    Publication date: April 12, 2012
    Inventor: Martin Chiang