Patents by Inventor Fenbao David Zhang

Fenbao David Zhang 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).

  • Invert emulsions made with non-PEG containing silicone based polyhydric emulsifiers
    Patent number: 10336776
    Abstract: This patent relates to invert water in oil (w/o) and water in silicone (w/si) emulsions made using non PEG/PPG containing polyhydric silicone emulsifiers. The polyhydric silicone polymers are based on allyl trimethylolpropane and pentaerythritol modified organic groups and do not contain any PEG and/or PPG groups (also known as polyethylene glycol and polypropylene glycols, polyethers, polyglycols,). These emulsions show improved emulsification stability and provide a light feel compared to emulsions made with other silicone based PEG/PPG compounds which are commonly used in the field.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: July 2, 2019
    Assignee: SILTECH CORP
    Inventors: Rick Vrckovnik, Fenbao David Zhang, Mark Riddle