Patents by Inventor Jeffrey S. Lewenczuk

Jeffrey S. Lewenczuk 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).

  • Polypropylene brush body
    Patent number: 6397425
    Abstract: An oral brush includes a) a body that includes a polymer composition that includes polypropylene and has a melt flow rate of at least about 10 g/10 min, and b) bristles extending from the body.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: June 4, 2002
    Assignee: Gillette Canada Company
    Inventors: Gerald S. Szczech, Jeffrey S. Lewenczuk