Patents by Inventor Manfred Pieroth

Manfred Pieroth 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).

  • Flame retardants for polymers comprising a mixture of two different aryl phosphates, their preparation and their use
    Patent number: 6774163
    Abstract: The present invention relates to a novel flame retardant system for polymers comprising a mixture of two different aryl phosphates, to its preparation, and to its use.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: August 10, 2004
    Assignee: Bayer Chemicals AG
    Inventors: Nikolaus Janke, Otto Mauerer, Manfred Pieroth
  • Flame retardants for polymers comprising a mixture of two different aryl phosphates, their preparation and their use
    Publication number: 20030195281
    Abstract: The present invention relates to a novel flame retardant system for polymers comprising a mixture of two different aryl phosphates, to its preparation, and to its use.
    Type: Application
    Filed: April 11, 2003
    Publication date: October 16, 2003
    Inventors: Nikolaus Janke, Otto Mauerer, Manfred Pieroth
  • Process for preparing phosphoric acid esters
    Patent number: 6489502
    Abstract: The present invention relates to a process for preparing phosphoric acid esters, in particular a process for preparing monomeric bridged bisaryl diphosphates, wherein a water-binding agent is added to the reaction solution.
    Type: Grant
    Filed: December 4, 2000
    Date of Patent: December 3, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Nikolaus Janke, Manfred Pieroth, Dieter Heinz, Werner Bäcker
  • Process for preparing phosphoric acid esters
    Publication number: 20020038044
    Abstract: The present invention relates to a process for preparing phosphoric acid esters, in particular a process for preparing monomeric bridged bisaryl diphosphates, wherein a water-binding agent is added to the reaction solution.
    Type: Application
    Filed: December 4, 2000
    Publication date: March 28, 2002
    Inventors: Nikolaus Janke, Manfred Pieroth, Dieter Heinz, Werner Backer
  • Process for the preparation of rubber/metal composite materials with a powerful rubber/metal bond
    Patent number: 4985305
    Abstract: The strength of the bond between a metal and vulcanized rubber may be increased by a bonding agent containing at least one organic cobalt compound and at least one boric acid ester.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: January 15, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rudiger Schubart, Manfred Pieroth, Theo Kempermann