Patents by Inventor Erwin Buhler

Erwin Buhler 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).

  • Additive for hydraulically setting systems, the hydraulically setting mixtures and the use there of
    Patent number: 7988783
    Abstract: The invention relates to an additive for hydraulically setting systems based on modified polycarboxylates and water-soluble ethers of high polymeric polysaccharides, optionally containing further standard additives, characterized by a content of a) a water-soluble ether of cellulose or a cellulose-like compound with a viscosity of at least approximately 1,000 mPas, particularly at least approximately 2,000 mPas, measured as a 2% aqueous solution with a Brookfield viscosimeter at 20° C. and 20 rpm and b) a polycarboxylate, whose main chain is linked by means of ester, ether, imide and/or amide groups with polyethylene oxide-containing side chains. The invention also relates to hydraulic mixtures having a content of the above additive and the use thereof.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: August 2, 2011
    Assignee: Akzo Nobel N.V.
    Inventors: Hanspeter Waser, Erwin Buhler, Robert Koelliker
  • ADDITIVE FOR HYDRAULICALLY SETTING SYSTEMS, THE HYDRAULICALLY SETTING MIXTURES AND THE USE THERE OF
    Publication number: 20100087570
    Abstract: The invention relates to an additive for hydraulically setting systems based on modified polycarboxylates and water-soluble ethers of high polymeric polysaccharides, optionally containing further standard additives, characterized by a content of a) a water-soluble ether of cellulose or a cellulose-like compound with a viscosity of at least approximately 1,000 mPas, particularly at least approximately 2,000 mPas, measured as a 2% aqueous solution with a Brookfield viscosimeter at 20° C. and 20 rpm and b) a polycarboxylate, whose main chain is linked by means of ester, ether, imide and/or amide groups with polyethylene oxide-containing side chains. The invention also relates to hydraulic mixtures having a content of the above additive and the use thereof.
    Type: Application
    Filed: August 28, 2009
    Publication date: April 8, 2010
    Inventors: Hanspeter WASER, Erwin Buhler, Robert Koelliker
  • Additive for hydraulically setting systems, the hydraulically setting mixtures and the use thereof
    Publication number: 20060100355
    Abstract: The invention relates to an additive for hydraulically setting systems based on modified polycarboxylates and water-soluble ethers of high polymeric polysaccharides, optionally containing further standard additives, characterized by a content of a) a water-soluble ether of cellulose or a cellulose-like compound with a viscosity of at least approximately 1,000 mPas, particularly at least approximately 2,000 mPas, measured as a 2% aqueous solution with a Brookfield viscosimeter at 20° C. and 20 rpm and b) a polycarboxylate, whose main chain is linked by means of ester, ether, imide and/or amide groups with polyethylene oxide-containing side chains. The invention also relates to hydraulic mixtures having a content of the above additive and the use thereof.
    Type: Application
    Filed: June 11, 2003
    Publication date: May 11, 2006
    Inventors: Hanspeter Waser, Erwin Buhler, Robert Koelliker