Patents by Inventor Warren Hayakawa

Warren Hayakawa 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: 6793092
    Abstract: A disposable container for disposing of used oil. The container includes a housing, tin foil, an oil absorbent material, and a filter. The housing is made from cardboard and has a substantially open top and an interior. The tin foil lines the interior of the housing and prevents the used oil poured into the housing from leaking therethrough, so as to form therewith, an oil-proofed housing. The oil absorbent material fills the interior of the oil-proofed housing and absorbs the used oil poured thereon. The filter is sandwiched between the oil absorbent material and the substantially open top of the housing and filters particles in the used oil as the used oil is poured through the substantially open top of the housing.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: September 21, 2004
    Inventors: Warren Hayakawa, Mark Shimabukuro