Patents by Inventor Sylvie Thelohan

Sylvie Thelohan 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).

  • Mineral fibres capable of dissolving in a physiological medium
    Patent number: 6060414
    Abstract: The present invention relates to mineral fibre composition which can dissolve in contact with a physiological medium. The composition of these fibres includes the following components, in accordance with the following proportions by weight:______________________________________ SiO.sub.2 48 to 67% Al.sub.2 O.sub.3 0 to 8% Fe.sub.2 O.sub.3 0 to 12% ______________________________________(total iron expressed in this form) ______________________________________ CaO 16 to 35% MgO 1 to 16% Na.sub.2 O + K.sub.2 O 0 to 6.5% P.sub.2 O.sub.5 0 to 5% ______________________________________taking into consideration that these compositions are also defined by the fact that the contents of these components comply with the following ratios:Na.sub.2 O+P.sub.2 O.sub.5 .gtoreq.2%Fe.sub.2 O.sub.3 +Al.sub.2 O.sub.3 .ltoreq.12%CaO+MgO+Fe.sub.2 O.sub.3 .gtoreq.23%.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: May 9, 2000
    Assignee: Isover Saint-Gobain
    Inventors: Wolfgang Holstein, Peter Lohe, Wolfgang Schwab, Alain DeMeringo, Sylvie Thelohan
  • Mineral fibres which can dissolve in a physiological medium
    Patent number: 6037284
    Abstract: The present invention relates to mineral fiber composition which can dissolve in contact with a physiological medium. The composition of these fibers includes the following components, in accordance with the following proportions by weight:______________________________________ SiO.sub.2 48 to 67% Al.sub.2 O.sub.3 0 to 8% Fe.sub.2 O.sub.3 0 to 12% ______________________________________(total iron expressed in this form) ______________________________________ CaO 16 to 35% MgO 1 to 16% Na.sub.2 O + K.sub.2 O 0 to 6.5% P.sub.2 O.sub.5 0 to 5% ______________________________________taking into consideration that these compositions are also defined by the fact that the contents of these components comply with the following ratios:Na.sub.2 O+P.sub.2 O.sub.5 .gtoreq.2%Fe.sub.2 O.sub.3 +Al.sub.2 O.sub.3 .ltoreq.12%CaO+MgO+Fe.sub.2 O.sub.3 .gtoreq.23%.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: March 14, 2000
    Assignee: Isover Saint-Gobain
    Inventors: Wolfgang Holstein, Peter Lohe, Wolfgang Schwab, Alain DeMeringo, Sylvie Thelohan
  • Mineral fibers decomposable in a physiological medium
    Patent number: 5250488
    Abstract: The present invention relates to mineral fiber compositions useful for forming fibers which are readily degraded in a physiological medium such as that found within the human body. Advantageous compositions formed according to the present invention comprise the following components in the proportions by weight set forth below:______________________________________ SiO.sub.2 37 to 58 wt. %; Al.sub.2 O.sub.3 4 to 14 wt. %; CaO 7 to 40 wt. %; MgO 4 to 16 wt. %; P.sub.2 O.sub.5 1 to 10 wt. %; Fe.sub.2 O.sub.3 up to about to 15 wt. %; ______________________________________wherein the amount of CaO+MgO+Fe.sub.2 O.sub.3 is greater than 25% and the total amount of Na.sub.2 O+K.sub.2 O is less than 7%. The total iron contained within the composition is expressed in the form of ferric oxide (Fe.sub.2 O.sub.3).
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: October 5, 1993
    Inventors: Sylvie Thelohan, Alain De Meringo, Hans Furtak, Wolfgang Holstein
  • Glass fibers decomposable in a physiological medium
    Patent number: 5108957
    Abstract: Glass compositions useful for forming fibers which are readily able to be degraded in a physiological medium such as that found in a human body. Advantageous compositions formed according to the present invention comprise the following components, set forth in percent by weight:SiO.sub.2 : 57 to 70%Al.sub.2 O.sub.3 : 0 to 5%CaO: 5 to 10%MgO: 0 to 5%Na.sub.2 O+K.sub.2 O: 13 to 18%B.sub.2 O.sub.3 : 2 to 12%F: 0 to 1.5%P.sub.2 O.sub.
    Type: Grant
    Filed: August 9, 1990
    Date of Patent: April 28, 1992
    Assignee: Isover Saint-Gobain
    Inventors: Isabelle Cohen, Sylvie Thelohan, Hans Furtak, Hartmut Tiesler
  • Mineral fibers decomposable in a physiological medium
    Patent number: RE35557
    Abstract: The present invention relates to mineral fiber compositions useful for forming fibers which are readily degraded in a physiological medium such as that found within the human body. Advantageous compositions formed according to the present invention comprise the following components in the proportions by weight set forth below:______________________________________ SiO.sub.2 37 to 58 wt. %; Al.sub.2 O.sub.3 4 to 14 wt. %; CaO 7 to 40 wt. %; MgO 4 to 16 wt. %; P.sub.2 O.sub.5 1 to 10 wt. %; Fe.sub.2 O.sub.3 up to about to 15 wt. %: ______________________________________wherein the amount of CaO+MgO+Fe.sub.2 O.sub.3 is greater than 25% and the total amount of Na.sub.2 O+K.sub.2 O is less than 7%. The total iron contained within the composition is expressed in the form of ferric oxide (Fe.sub.2 O.sub.3).
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: July 8, 1997
    Assignee: Isover-Saint Gobain
    Inventors: Sylvie Thelohan, Alain DeMeringo, Hans Furtak, Wolfgang Holstein