Patents by Inventor Josef Zemp

Josef Zemp 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).

  • Hydraulic fixing agent and method for reducing the cohesion of a layer of bonded fixing agent
    Patent number: 6998012
    Abstract: Hydraulic fixing agent that is based on Portland cement, a sulphate and aluminum component that is usual in this system, and optionally other additives. This is characterized in that, according to DIN 18156 (Part 2, Sec. 5.2.2.2, 5.2.2.3a) and 5.2.2.4), the hydraulic fixing agent has (1) an adhesive pull strength of at least approximately 0.15 N/mm2 when acted upon by water for 40 hours and (2) an adhesive pull strength of at most approximately 0.10 N/mmyy2 when acted upon by an aqueous sulphate solution and/or an aqueous solution of an aluminum salt, each of which has a pH value of 12.5, for a period of 40 hours.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: February 14, 2006
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Robert Koelliker, Josef Zemp
  • Hydraulic fixing agent and method for reducing the cohesion of a layer of bonded fixing agent
    Publication number: 20040137151
    Abstract: Hydraulic fixing agent that is based on Portland cement, a sulphate and aluminum component that is usual in this system, and optionally other additives. This is characterized in that, according to DIN 18156 (Part 2, Sec. 5.2.2.2, 5.2.2.3a) and 5.2.2.4), the hydraulic fixing agent has (1) an adhesive pull strength of at least approximately 0.15 N/mm2 when acted upon by water for 40 hours and (2) an adhesive pull strength of at most approximately 0.10 N/mmyy2 when acted upon by an aqueous sulphate solution and/or an aqueous solution of an aluminum salt, each of which has a pH value of 12.5, for a period of 40 hours.
    Type: Application
    Filed: November 19, 2003
    Publication date: July 15, 2004
    Inventors: Robert Koelliker, Josef Zemp