Patents by Inventor Ta Ching

Ta Ching 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).

  • Enhanced oxygen barrier performance from modification of ethylene vinyl alcohol copolymers (EVOH)
    Publication number: 20060251841
    Abstract: Herein is disclosed a modified ethylene vinyl alcohol polymer (EVOH) comprising an oxygen scavenging functional group. Preferably, the modified EVOH comprises structures IV, V, and VI: wherein x is an integer greater than or equal to 1, y is an integer greater than or equal to 1, z is an integer greater than or equal to 1, and R comprises a cycloalkenyl group. The modified EVOH is useful in oxygen barrier applications, such as a forming an oxygen barrier layer of a packaging article. Also disclosed are methods of modifying ethylene vinyl alcohol polymers, and using the modified EVOH to make packaging articles with a superior barrier to entry by atmospheric oxygen.
    Type: Application
    Filed: July 10, 2006
    Publication date: November 9, 2006
    Inventors: Hu Yang, Ta Ching, Gangfeng Cai
  • Transition metal carboxylates as catalysts for oxygen scavenging
    Publication number: 20050104033
    Abstract: Disclosed herein are oxygen scavenging compositions and packaging articles that comprise (a) a metal catalyzed oxidizable compound and (b) at least one of a transition metal carboxylate, wherein the transition metal carboxylate comprises at least one carboxylate group and wherein each carboxylate group comprises between 20 and 30 carbon atoms, inclusive, such as cobalt behenate or cobalt arachidate.
    Type: Application
    Filed: November 19, 2003
    Publication date: May 19, 2005
    Inventors: Richard Schmidt, James Solis, Ta Ching