Patents by Inventor Carol Anne Handwerker

Carol Anne Handwerker 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).

  • Shell activated sintering of core-shell particles
    Patent number: 9263166
    Abstract: A sintered structure and method for forming it are disclosed. The method includes obtaining core-shell particles having a core material and a shell material, forming the particles into a powder compact, and annealing the powder compact at an annealing temperature. The shell material is a metal that diffuses faster than the core material at the annealing temperature and diffuses to the contacts between the core-shell particles during annealing to form sintered interfaces between the core-shell particles. The sintered structure can have discontinuous regions of shell material between the sintered interfaces. The core material can be a metal, semiconductor or ceramic. The core material can be copper and the shell material can be silver. The sintered interfaces can be almost purely shell material. The annealing temperature can be significantly lower than the temperature needed to form interfaces between particles of the core material without the shell material.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: February 16, 2016
    Assignee: Purdue Research Foundation
    Inventors: Carol Anne Handwerker, Suk Jun Kim, Eric A. Stach
  • SHELL ACTIVATED SINTERING OF CORE-SHELL PARTICLES
    Publication number: 20140370322
    Abstract: A sintered structure and method for forming it are disclosed. The method includes obtaining core-shell particles having a core material and a shell material, forming the particles into a powder compact, and annealing the powder compact at an annealing temperature. The shell material is a metal that diffuses faster than the core material at the annealing temperature and diffuses to the contacts between the core-shell particles during annealing to form sintered interfaces between the core-shell particles. The sintered structure can have discontinuous regions of shell material between the sintered interfaces. The core material can be a metal, semiconductor or ceramic. The core material can be copper and the shell material can be silver. The sintered interfaces can be almost purely shell material. The annealing temperature can be significantly lower than the temperature needed to form interfaces between particles of the core material without the shell material.
    Type: Application
    Filed: June 17, 2013
    Publication date: December 18, 2014
    Inventors: Carol Anne Handwerker, Suk Jun Kim, Eric A. Stach
  • SHELL ACTIVATED SINTERING OF CORE-SHELL PARTICLES
    Publication number: 20110318213
    Abstract: A sintered structure and method for forming it are disclosed. The method includes obtaining core-shell particles having a core material and a shell material, forming the particles into a powder compact, and annealing the powder compact at an annealing temperature. The shell material is a metal that diffuses faster than the core material at the annealing temperature and diffuses to the contacts between the core-shell particles during annealing to form sintered interfaces between the core-shell particles. The sintered structure can have discontinuous regions of shell material between the sintered interfaces. The core material can be a metal, semiconductor or ceramic. The core material can be copper and the shell material can be silver. The sintered interfaces can be almost purely shell material. The annealing temperature can be significantly lower than the temperature needed to form interfaces between particles of the core material without the shell material.
    Type: Application
    Filed: September 8, 2010
    Publication date: December 29, 2011
    Inventors: Carol Anne Handwerker, Suk Jun Kim, Eric A. Stach