Patents by Inventor Ivan Pelgrims

Ivan Pelgrims 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).

  • Process for reducing or avoiding foam production during chemical and physical materials conversion processes
    Patent number: 6689334
    Abstract: The production of foam which occurs in many chemical and physical materials conversion processes can be avoided by performing the materials conversion process in an ascending jet reactor, including a baffle-free container with a tapering lower section, preferably a conical lower section, and a device for gas injection, and the contents of the reactor are thoroughly mixed by means of ascending jet circulation caused by gas injection.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: February 10, 2004
    Assignee: Degussa AG
    Inventors: Rüdiger Schütte, Alexander Ruhs, Ivan Pelgrims
  • Process for reducing or avoiding foam production during chemical and physical materials conversion processes and a device for performing this process
    Patent number: 6277333
    Abstract: The production of foam which occurs in many chemical and physical materials conversion processes can be avoided by performing the materials conversion process in an ascending jet reactor, including a baffle-free container with a tapering lower section, preferably a conical lower section, and a device for gas injection, and the contents of the reactor are thoroughly mixed by means of ascending jet circulation caused by gas injection.
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: August 21, 2001
    Assignee: Degussa AG
    Inventors: Rüdiger Schütte, Alexander Ruhs, Ivan Pelgrims
  • Coated sodium percarbonate particles, process for the production thereof and use thereof
    Patent number: 6113805
    Abstract: Sodium percarbonate particles stabilized against loss of active oxygen in detergents, bleaches and cleaning agents by the application of a two-layer coating applied by means of a fluidized bed spray process, the inner layer including sodium percarbonate and the outer layer including sodium sulphate.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: September 5, 2000
    Assignee: Degussa-Huls Aktiengesellschaft
    Inventors: Rudiger Schutte, Ivan Pelgrims, Lothar Kaiser, Martin Bewersdorf
  • Process for producing abrasion-resistant sodium perborate monohydrate with high bulk density and high rate of solution
    Patent number: 5653950
    Abstract: Sodium perborate monohydrate having an O.sub.a content of 14 to 16%, a bulk density of at least 600 g/l, an abrasion index (ISO 5937) of less than 8%, and a specific surface of less than 5 m.sup.2 /g can be produced by a fluidized bed--spraying process by spraying a sodium perborate solution produced by combining and mixing an aqueous hydrogen peroxide solution with an aqueous sodium metaborate solution, whereby the contact time between the combination of the solutions and the spraying is at least 2 seconds and preferably at least 5 seconds.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: August 5, 1997
    Assignee: Degussa Aktiengesellschaft
    Inventors: Ivan Pelgrims, Claas-Juergen Klasen