Patents by Inventor David F. Factor

David F. Factor 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).

  • Unitized cement admixture
    Patent number: 5728209
    Abstract: An additive for concrete, mortar or grout comprises at least one admixture material in a compacted unit of selected amount, the unit having strength sufficient to maintain structural integrity during handling and storage, but having sufficient solubility or friability upon mechanical agitation within a wet mixing environment of a cementitious composition mixture to dissolve or fragment for uniform dispersal throughout the cementitious composition mixture.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: March 17, 1998
    Assignee: MBT Holding AG
    Inventors: Jeffrey Bury, David F. Factor, Zvi Grauer
  • 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
  • Cementitious compositions
    Patent number: 5556458
    Abstract: A cementitious composition comprising(a) a cementitious material;(b) a fly ash which has a calcium oxide content of from 15-45% by weight;(c) a hydroxycarboxylic acid; and(d) a water-soluble source of alkali metal ions.The compositions are useful as concretes, grouts and mortars.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: September 17, 1996
    Assignee: Sandoz Ltd.
    Inventors: John W. Brook, David F. Factor, Frederick D. Kinney, Celeste L. McCallen, Andrea M. Young
  • Cementitious compositions containing fly ash
    Patent number: 5536310
    Abstract: A cementitious composition comprising(A) 10-30 parts cementitious material;(B) 50-80 parts fly ash weight; and(C) 1.5-8 parts hydroxycarboxylic acid and/or salt thereof.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: July 16, 1996
    Assignee: Sandoz Ltd.
    Inventors: John W. Brook, David F. Factor, Frederick D. Kinney, Celeste L. McCallen, Andrea M. Young