Patents by Inventor Elvira Tjipto

Elvira Tjipto 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).

  • Polyelectrolyte multilayer films at liquid-liquid interfaces
    Patent number: 8062853
    Abstract: The present invention is directed to methods for providing a polyelectrolyte multilayer film at a liquid-liquid interface. Such methods include steps of sequentially-depositing layers of cationic and anionic polyelectrolytes at a liquid-liquid interface that is formed between immiscible first and second liquids whereby a polyelectrolyte multilayer film is provided at the liquid-liquid interface. In certain preferred embodiments, the first liquid is an aqueous solution and the second liquid is a liquid crystal. In alternative embodiments, the first liquid is an aqueous solution and the second liquid is an oil. The invention further encompasses polyelectrolyte multilayer films provided by the disclosed methods as well as applications utilizing such materials.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: November 22, 2011
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Nicholas Abbott, Nathan A. Lockwood, Katie D. Cadwell, Frank Caruso, Elvira Tjipto
  • Polyelectrolyte Multilayer Films At Liquid-Liquid Interfaces
    Publication number: 20100196947
    Abstract: The present invention is directed to methods for providing a polyelectrolyte multilayer film at a liquid-liquid interface. Such methods include steps of sequentially-depositing layers of cationic and anionic polyelectrolytes at a liquid-liquid interface that is formed between immiscible first and second liquids whereby a polyelectrolyte multilayer film is provided at the liquid-liquid interface. In certain preferred embodiments, the first liquid is an aqueous solution and the second liquid is a liquid crystal. In alternative embodiments, the first liquid is an aqueous solution and the second liquid is an oil. The invention further encompasses polyelectrolyte multilayer films provided by the disclosed methods as well as applications utilizing such materials.
    Type: Application
    Filed: January 11, 2010
    Publication date: August 5, 2010
    Inventors: Nicholas Abbott, Nathan A. Lockwood, Katie D. Cadwell, Frank Caruso, Elvira Tjipto
  • Polyelectrolyte multilayer films at liquid-liquid interfaces and methods for providing and using same
    Patent number: 7678545
    Abstract: The present invention is directed to methods for providing a polyelectrolyte multilayer film at a liquid-liquid interface. Such methods include steps of sequentially-depositing layers of cationic and anionic polyelectrolytes at a liquid-liquid interface that is formed between immiscible first and second liquids whereby a polyelectrolyte multilayer film is provided at the liquid-liquid interface. In certain preferred embodiments, the first liquid is an aqueous solution and the second liquid is a liquid crystal. In alternative embodiments, the first liquid is an aqueous solution and the second liquid is an oil. The invention further encompasses polyelectrolyte multilayer films provided by the disclosed methods as well as applications utilizing such materials.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: March 16, 2010
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Nicholas Abbott, Nathan A. Lockwood, Katie D. Cadwell, Frank Caruso, Elvira Tjipto
  • MULTILAYER POLYMER FILMS
    Publication number: 20090047517
    Abstract: The invention relates to a multilayer polymer assembly comprising polymer layers covalently bonded together by crosslinks comprising a cyclic moiety, and to processes for the preparation thereof.
    Type: Application
    Filed: June 26, 2008
    Publication date: February 19, 2009
    Inventors: Francesco Caruso, Georgina Such, Angus Johnston, Elvira Tjipto, Heng Pho Yap, Cameron Kinnane, Christopher Ochs
  • Polyelectrolyte multilayer films at liquid-liquid interfaces and methods for providing and using same
    Publication number: 20090023155
    Abstract: The present invention is directed to methods for providing a polyelectrolyte multilayer film at a liquid-liquid interface. Such methods include steps of sequentially-depositing layers of cationic and anionic polyelectrolytes at a liquid-liquid interface that is formed between immiscible first and second liquids whereby a polyelectrolyte multilayer film is provided at the liquid-liquid interface. In certain preferred embodiments, the first liquid is an aqueous solution and the second liquid is a liquid crystal. In alternative embodiments, the first liquid is an aqueous solution and the second liquid is an oil. The invention further encompasses polyelectrolyte multilayer films provided by the disclosed methods as well as applications utilizing such materials.
    Type: Application
    Filed: July 10, 2006
    Publication date: January 22, 2009
    Inventors: Nicholas Abbott, Nathan A. Lockwood, Katie D. Cadwell, Frank Caruso, Elvira Tjipto