Patents by Inventor Kwong Lam Thomas Chow

Kwong Lam Thomas Chow 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).

  • Patent number: 9034133
    Abstract: A method of manufacturing polyurethane (PU) foam toys with no restriction on playing environment comprises steps as follows: (1) Placing the prefabricated flexible cover into the foaming mold, and then vacuuming to firmly attach the cover to the inner wall of the mold; (2) Spraying adhesives at the periphery and the interior of the flexible cover while maintaining the continuous vacuum pressure; (3) Injecting the mixed polyurethane into the foaming mold; (4) Closing the mold and performing condensation reaction; (5) Opening the mold to get the product. The present invention is about the production of polyurethane form toys by formulating polyurethanes and binding the interior polyurethane body and flexible cover with adhesives. Because of its resilient and sturdy characteristics, the thermoplastic flexible cover provides protection to the interior polyurethane foam body, effectively eliminating problems like mildew growth, difficulties of cleaning and preventing damage.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: May 19, 2015
    Inventor: Kwong Lam Thomas Chow
  • Publication number: 20130245144
    Abstract: A method of manufacturing polyurethane (PU) foam toys with no restriction on playing environment comprises steps as follows: (1) Placing the prefabricated flexible cover into the foaming mold, and then vacuuming to firmly attach the cover to the inner wall of the mold; (2) Spraying adhesives at the periphery and the interior of the flexible cover while maintaining the continuous vacuum pressure; (3) Injecting the mixed polyurethane into the foaming mold; (4) Closing the mold and performing condensation reaction; (5) Opening the mold to get the product. The present invention is about the production of polyurethane form toys by formulating polyurethanes and binding the interior polyurethane body and flexible cover with adhesives. Because of its resilient and sturdy characteristics, the thermoplastic flexible cover provides protection to the interior polyurethane foam body, effectively eliminating problems like mildew growth, difficulties of cleaning and preventing damage.
    Type: Application
    Filed: September 13, 2012
    Publication date: September 19, 2013
    Inventor: Kwong Lam Thomas CHOW
  • Publication number: 20110039049
    Abstract: A molded foam article (100) comprises a foamed core (110) of an expanded non-thermoplastic foam material which is bonded to a skin (120) of an un-expanded or a minimally expanded non-thermoplastic material. Polyurethane is a suitable non-thermoplastic material. The skin (120) may be compressively molded of un-expanded polyurethane, and the foamed core (110) is formed using water as blowing agents.
    Type: Application
    Filed: April 21, 2009
    Publication date: February 17, 2011
    Inventor: Kwong Lam Thomas Chow