Patents by Inventor Darren John Askew

Darren John Askew 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).

  • Mouldable alum composition
    Patent number: 5718865
    Abstract: A moulded alum composition is formed by mixing crushed solid alum with a polyol plasticiser followed by heating to form a slurry, and then pouring the mixture into a mould. No mechanical cutting and grinding is required and weakening cracks and fissures present in the raw alum are removed.
    Type: Grant
    Filed: December 24, 1996
    Date of Patent: February 17, 1998
    Inventor: Darren John Askew