Patents by Inventor Hugh I. Cassidy

Hugh I. Cassidy 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).

  • Permeable liner having concrete setting retardant
    Patent number: 4055322
    Abstract: There is disclosed an article useful for producing concrete with textured patterns which includes a membrane of water permeable material having a pattern prepared on one side thereof with a water soluble retardant for the setting of cement and with the retardant pattern completely covered with a waterproof film that is bonded to the membrane immediately adjacent the retardant pattern. There is also disclosed a method for preparing concrete to have a pattern on its surface employing the article.
    Type: Grant
    Filed: November 13, 1975
    Date of Patent: October 25, 1977
    Inventor: Hugh I. Cassidy