Patents by Inventor John Atwill

John Atwill 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).

  • Waterless urinal with liquid seal, liquid seal and method of using liquid seal
    Patent number: 6589440
    Abstract: A waterless urinal employs a sealing liquid comprising 4-chloro-3-methylphenol in an amount effective to act as a biocide and a compound selected from the group consisting of (1) branched aliphatic alcohols with C12 to C24 carbon chain lengths, (2) a mix of the branched aliphatic alcohols and linear aliphatic alcohols with C10 to C18 carbon chain lengths, (3) a mix of the branched aliphatic alcohols and linear aliphatic fatty acids with C14 to C18 carbon chain lengths, and (4) a mix of the branched aliphatic alcohols, linear aliphatic alcohols with C10 to C18 carbon chain lengths, and linear aliphatic fatty acids with C14 to C18 carbon chain lengths.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: July 8, 2003
    Inventor: John Atwill
  • Waterless urinal with liquid seal, liquid seal & method of using liquid seal
    Publication number: 20020038474
    Abstract: A waterless urinal employs a sealing liquid comprising 4-chloro-3-methylphenol in an amount effective to act as a biocide and a compound selected from the group consisting of
    Type: Application
    Filed: August 9, 2001
    Publication date: April 4, 2002
    Inventor: John Atwill