Patents by Inventor Klaus Kwetkat

Klaus Kwetkat 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).

  • Betaine gemini surfactants made from amines
    Patent number: 6034271
    Abstract: Amphiphilic amphoteric compounds of formula (I) ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, and n are as defined in the disclosure.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: March 7, 2000
    Assignee: Huels Aktiengesellschaft
    Inventor: Klaus Kwetkat
  • Amphiphilic compounds with at least two hydrophilic and at least two hydrophobic groups based on dicarboxylic acid diamides
    Patent number: 5997610
    Abstract: The invention concerns amphiphilic compounds of general formula (I) ##STR1## with at least two hydrophilic and at least two hydrophobic groups based on diacarboxylic acid diamides. The amphiphilic compounds according to the invention are mostly surface-active and are suitable for use as emulsifiers, demulsifiers, detergents, dispergents and hydrotropic agents in industry and households, for example, in the treatment of metals, ore processing, surface finishing, washing, cleaning, cosmetics, medicine and food processing and preparation.
    Type: Grant
    Filed: August 18, 1997
    Date of Patent: December 7, 1999
    Assignee: Huels Aktiengesellschaft
    Inventors: Klaus Kwetkat, Wulf Ruback
  • Amphiphilic compounds with at least two hydrophilic and at least two hydrophobic groups based on di-, oligo- and polyol ethers
    Patent number: 5977404
    Abstract: The invention relates to amphiphilic compounds of the general formula (I) with at least two hydrophilic and at least two hydrophobic groups based on di, oligo or polyolethers. The amphiphilic compounds of this invention are highly surface active and are suitable as emulsifiers, demulsifiers, detergents, dispersants and hydrotropes for industrial and domestic purposes, e.g. in the fields of metalworking, ore separation, surface treatment, washing and cleaning, cosmetics, medicine and food processing and preparation.
    Type: Grant
    Filed: June 26, 1997
    Date of Patent: November 2, 1999
    Assignee: Huels Aktiengesellschaft
    Inventors: Klaus Kwetkat, Wolfgang Schroder
  • Amphiphilic compounds with several hydrophilic and hydrophobic groups based on alkoxylated amines and/or amides and di-, oligo- or polycarboxylic acids
    Patent number: 5962726
    Abstract: The invention relates to amphiphilic compounds of the general formula I ##STR1## with at least two hydrophilic and at least two hydrophobic groups based on alkoxylated amines and/or alkoxylated fatty acid amides and di-, oligo- or polycarboxylic acids (spacer A). Y and Z are hydrogen or functional groups. The amphiphilic compounds according to this invention are usually surface-active and are suitable as emulsifiers, demulsifiers, detergents, dispersants and hydrotropes in industry and domestically, for example in the areas of metal processing, ore production, surface treatment, washing and cleaning hard surfaces, such as, for example, the manual cleaning of crockery, washing and cleaning skin and hair, cosmetics, medicine and food processing and preparation.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: October 5, 1999
    Assignee: Huls Aktiengesellschaft
    Inventors: Klaus Kwetkat, Herbert Koch, Wulf Ruback