Patents by Inventor Hamid Farzammehr

Hamid Farzammehr 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).

  • Anti-efflorescence admixture for concrete products
    Patent number: 5595594
    Abstract: An anti-efflorescence admixture for concrete products comprising a tall oil fatty acid and a fatty acid, a portion of the acid content of the tall oil fatty acid and/or fatty acid optionally being present in salt form with an alkanolamine or alkylamine, which admixture is effective in controlling both primary and secondary efflorescence.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: January 21, 1997
    Assignee: Sandoz Ltd
    Inventors: Jie-Yi Dong, David F. Factor, Hamid Farzammehr, Kenneth Sroka