Patents by Inventor Wilfried Schuler

Wilfried Schuler 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).

  • Hair-treatment compositions comprising oligoesters
    Patent number: 6426063
    Abstract: Hair-treatment compositions which comprise oligoesters prepared by condensation of an aromatic dicarboxylic acid, ethylene glycol and/or propylene glycol and polyethylene glycol and optionally alkylpolyethylene glycol are claimed.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: July 30, 2002
    Assignee: Clariant GmbH
    Inventor: Wilfried Schuler
  • Granulated bleaching activators and their preparation
    Patent number: 5716569
    Abstract: The present invention relates to a process for the preparation of storage-stable granules essentially comprising a bleaching activator and an inorganic binder material, which comprises the process steps:a) mixing of a dry bleaching activator with a dry inorganic binder material,b) pressing of this mixture to give relatively large agglomerates andc) comminution of these agglomerates to the desired particle size.The invention furthermore relates to the use of the granules prepared by the processes in detergents, cleaning compositions, bleaching compositions and disinfectants.
    Type: Grant
    Filed: October 31, 1995
    Date of Patent: February 10, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Helmut Berenbold, Georg Borchers, Jurgen Cramer, Gerhard Noltner, Gerd Reinhardt, Wilfried Schuler
  • Polycondensates containing phosphinic or phosphonic acid groups and siloxane groups
    Patent number: 5492995
    Abstract: The present invention relates to polycondensates of the general formula I ##STR1## in which X stands, at least once, for a group of the formula VII ##STR2## and, at least once, a group of the formula VIII ##STR3## and the other variables are defined as indicated in claim 1, processes for their preparation and their use.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: February 20, 1996
    Assignee: Hoechst Aktiengsellschaft
    Inventors: Fritz Engelhardt, Karl-Heinz Keil, Jurgen Kuhlwein, Wilfried Schuler, Willi Steckelberg, Ralf Zerrer, Werner Antwerpen
  • Polycondensates containing polysiloxane groups
    Patent number: 5488123
    Abstract: The present invention relates to polycondensates of the general formula I ##STR1## in which ##STR2## and the other variables are defined as indicated in claim 1, processes for their preparation and their use.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: January 30, 1996
    Assignee: Cassella AG
    Inventors: Fritz Engelhardt, Jurgen Kuhlwein, Wilfried Schuler, Ralf Zerrer, Werner Antwerpen
  • Process for the preparation of a readily soluble bleach activator granulate with a long shelf life
    Patent number: 5100576
    Abstract: A pulverulant, dry bleach activator, in particular tetraacetylethylenediamine is first moistened with water and then mixed with a dry auxiliary, in particular, with Na carboxymethylcellulose. This mixture is then granulated.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: March 31, 1992
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Jurgen Cramer, Helmut Kramer, Gerhard Noltner, Wilfried Schuler