Patents by Inventor Markus Steigenberger

Markus Steigenberger 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).

  • Medicinal syringe with piston stopper withdrawal and rotation-limiting means
    Patent number: 7361162
    Abstract: The syringe is formed according to DIN ISO 11040 and has a syringe barrel (1) with a syringe head (1a) formed on one end and a grip plate (4) formed at the other open end. An elastomeric piston stopper (6) is insertable in this open end, which is movable back and forth and which has a cruciform-cross-sectioned piston rod (7) screwed into it. A stop element, which reduces the interior diameter of the syringe barrel, is provided at the open end of the syringe barrel to perform a back-stop function, i.e. to prevent unintended withdrawal of the piston stopper. For this purpose a plastic part (2) connected to the grip plate (4) is provided with snap catches (3), which snap onto the inner side of the syringe barrel (1). These snap-catches (3) prevent the piston rod (7) from being rotated out of the piston stopper and the piston stopper (6) from being withdrawn from the syringe barrel. At the same time the finger support is enlarged.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: April 22, 2008
    Assignee: Schott AG
    Inventors: Horst Koller, Markus Steigenberger, Karl Mosimann, Thomas Kadur
  • Medicinal syringe with piston stopper withdrawal and rotation-limiting means
    Publication number: 20040260248
    Abstract: The syringe is formed according to DIN ISO 11040 and has a syringe barrel (1) with a syringe head (1a) formed on one end and a grip plate (4) formed at the other open end. An elastomeric piston stopper (6) is insertable in this open end, which is movable back and forth and which has a cruciform-cross-sectioned piston rod (7) screwed into it. A stop element, which reduces the interior diameter of the syringe barrel, is provided at the open end of the syringe barrel to perform a back-stop function, i.e. to prevent unintended withdrawal of the piston stopper. For this purpose a plastic part (2) connected to the grip plate (4) is provided with snap catches (3), which snap onto the inner side of the syringe barrel (1). These snap-catches (3) prevent the piston rod (7) from being rotated out of the piston stopper and the piston stopper (6) from being withdrawn from the syringe barrel. At the same time the finger support is enlarged.
    Type: Application
    Filed: November 10, 2003
    Publication date: December 23, 2004
    Inventors: Horst Koller, Markus Steigenberger, Karl Mosimann, Thomas Kadur
  • Fire-resistant glass containing a gel with improved melting resistance, and process for the preparation thereof
    Patent number: 5885713
    Abstract: Fire-resistant glass, produced by placing between two panes of glass a gel former containing a) an acid aluminum phosphate, b) a reaction product of boric acid with an alkanolamine and one or more alkali metal compounds, and heating the glass to convert the gel former to a gel.
    Type: Grant
    Filed: September 10, 1997
    Date of Patent: March 23, 1999
    Assignees: Bayer Aktiengesellschaft, Schott Glaswerke
    Inventors: Wulf von Bonin, Roland Leroux, Markus Steigenberger, Thomas Karschti, Markus Ring
  • Gel formers having reduced gelling time and forming gels with improved melting resistance
    Patent number: 5709821
    Abstract: Gel formers comprising acid aluminum phosphate and a reaction product of boric acid and an alkanolamine, and further comprising alkali metal compounds in the aluminum: alkali metal ratio of 1:1.3-2.5 require short gelling times, and form gels having improved melting resistance.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: January 20, 1998
    Assignees: Bayer Aktiengesellschaft, Schott Glaswerke
    Inventors: Wulf von Bonin, Roland Leroux, Markus Steigenberger, Thomas Karschti, Markus Ring
  • Fireproofing glasses containing special gels and the preparation of fireproofing glasses of this type
    Patent number: 5580661
    Abstract: Fireproofing glasses containing gels free from organic gel formers are characterized in that they have been prepared with gel formers which containa) acidic aluminium phosphates andb) reaction products of boric acid with alkanolamines,a) and b) being present in a weight ratio of 100:55 to 100:0.5, calculated as solids.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: December 3, 1996
    Assignees: Schott Glaswerke, Bayer Aktiengesellschaft
    Inventors: Wulf von Bonin, Roland Leroux, Thomas M. Karschti, Markus Steigenberger