Patents by Inventor George C. W. Randall

George C. W. Randall 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).

  • Foundry compositions containing propylene glycol monoacetate
    Patent number: 4199365
    Abstract: The present invention relates to foundry compositions containing propylene glycol monoacetate, a silica base and a silicate. The use of propylene glycol monoacetate as ester hardeners imparts greater compressive strength to foundry cors and the strength is built up more rapidly than with conventional ester hardeners. This is believed to be due at least in part to the total miscibility of this ester with water and to the purity of the ester product.
    Type: Grant
    Filed: October 27, 1978
    Date of Patent: April 22, 1980
    Assignee: BP Chemicals Limited
    Inventor: George C. W. Randall