Patents by Inventor Detlev SEIFERT

Detlev SEIFERT 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).

  • Method for applying manganese phosphate layers
    Patent number: 9506151
    Abstract: The invention relates to a method for applying manages phosphate layers to iron or steel surfaces using phosphating solutions containing manganese, phosphate, iron (II) ions as well as nitroguinidine, as well as its application to workpieces that are subject to sliding friction.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: November 29, 2016
    Assignee: Chemetall GmbH
    Inventors: Klaus-Dieter Nittel, Detlev Seifert, Ralf Stickler
  • METHOD FOR APPLYING MANGANESE PHOSPHATE LAYERS
    Publication number: 20110086171
    Abstract: The invention relates to a method for applying manages phosphate layers to iron or steel surfaces using phosphating solutions containing manganese, phosphate, iron(II) ions as well as nitroguinidine, as well as its application to workpieces that are subject to sliding friction.
    Type: Application
    Filed: December 17, 2010
    Publication date: April 14, 2011
    Inventors: Klaus-Dieter NITTEL, Detlev SEIFERT, Ralf STICKLER