Patents by Inventor Dawan Kungwatchakun

Dawan Kungwatchakun 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).

  • Photo-induced reversible, discontinuous volume changes in gels
    Patent number: 5242491
    Abstract: Novel gel compositions are provided which exhibit a drastic discontinuous volume change when exposed to or shielded from light energy.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: September 7, 1993
    Assignee: Massachusetts Institute of Technology
    Inventors: Akira Mamada, Toyoichi Tanaka, Dawan Kungwatchakun, Masahiro Irie