Patents by Inventor Richard E. Groh

Richard E. Groh 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).

  • Method for using lightweight concrete for producing a combination therefrom and a combination produced thereby
    Patent number: 5759260
    Abstract: This invention is directed to a lightweight concrete combination. The combination includes a lightweight concrete product having auxiliary structures, such as at least one fastener, embedded therein. The lightweight concrete product comprises (a) cement and (b) a lightweight additive material. The invention also relates to a method for using the lightweight concrete product, and to a method for producing the lightweight concrete combination.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: June 2, 1998
    Assignee: Rigro Inc.
    Inventor: Richard E. Groh