Patents by Inventor Roland Heindl

Roland Heindl 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).

  • Refractory ceramic mass and its use
    Patent number: 5723394
    Abstract: The present invention pertains to a refractory ceramic mass, consisting of 50 to 97 wt. % of sintered MgO as well as 3 to 50 wt. % of a spinel of the hercynite type.
    Type: Grant
    Filed: September 17, 1996
    Date of Patent: March 3, 1998
    Assignee: Veitsch-Radex Aktiengesellschaft Fur Feuerfeste Erzeugnisse
    Inventors: Harald Harmuth, Roland Heindl, Josef Deutsch
  • Refractory ceramic mass and its use
    Patent number: 5573987
    Abstract: The present invention pertains to a refractory ceramic mass, consisting of a pure magnesia component A and a component B, which consists of granules of pure magnesia, wherein the magnesia granules of component B have a ceating consisting of a refractory material whose granule size is fine compared with that of the magnesia granules and is chemically extensively inert with respect to the magnesia granule or reacts with the magnesia granule and/or itself consists of a plurality of components that are chemically reactive with one another.
    Type: Grant
    Filed: February 7, 1995
    Date of Patent: November 12, 1996
    Assignee: Veitsch-Radex Aktiengesellschaft fur feuerfeste Erzeugnisse
    Inventors: Harald Harmuth, Roland Heindl, Josef Deutsch
  • Refractory ceramic mass and its use
    Patent number: 5569631
    Abstract: The present invention pertains to a refractory ceramic mass, consisting of 50 to 97 wt. % of sintered MgO as well as 3 to 50 wt. % of a spinel of the hercynite type.
    Type: Grant
    Filed: February 7, 1995
    Date of Patent: October 29, 1996
    Assignee: Veitsch-Radex Aktiengesellschaft Fur Feuerfeste Erzeugnisse
    Inventors: Harald Harmuth, Roland Heindl, Josef Deutsch
  • Refractory brick
    Patent number: 5552354
    Abstract: The present invention pertains to a refractory brick based on at least one refractory metal oxide in a particle fraction of <8 mm containing 4 to 30 wt. % of a very fine refractory fraction, prepared by firing below a temperature at which the particles of the very fine refractory fraction sinter by recrystallization with grain growth.
    Type: Grant
    Filed: March 16, 1995
    Date of Patent: September 3, 1996
    Assignee: Veitsch-Radex Aktiengesellschaft fur Feuerfeste Erzeugnisse
    Inventors: Harald Harmuth, Roland Heindl, Josef Deutsch
  • Use of a finely divided, refractory, oxidic micropowder for preparing ceramic masses and moldings
    Patent number: 5426078
    Abstract: The present invention pertains to the use of a finely divided magnesium oxide micropowder for preparing ceramic masses and moldings.
    Type: Grant
    Filed: June 4, 1993
    Date of Patent: June 20, 1995
    Assignee: Veitscher Magnesitwerke-Actien-Gesellschaft
    Inventor: Roland Heindl
  • Magnesium oxide in fine powder form and its use
    Patent number: 5106608
    Abstract: A magnesium oxide in fine powder form, which can be used to manufacture high-density ceramics, has an MgO content greater than 95 wt. %, preferably greater than 98 wt. %, a particle size less than 15 .mu.m, and a BET specific surface area less than 20 m.sup.2 /g. The statistical mean of the particle shape factor of the primary particles lies between 1 and 1.5. The particles are coated with a hydrophobic, surface-active substance.
    Type: Grant
    Filed: April 5, 1990
    Date of Patent: April 21, 1992
    Assignee: Veitscher Magnesitwerke-Actien-Gesellschaft
    Inventors: Alexander Retschnig, Roland Heindl