Patents by Inventor Yvette Gertrude Roman

Yvette Gertrude Roman 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).

  • Exhaust device for a turbine engine
    Patent number: 6257366
    Abstract: The invention relates to an exhaust device for a turbine engine, comprising a liner made of a fiber-reinforced ceramic matrix composite. The liner is preferably fitted some distance away from the inside of the exhaust section. The liner has a thickness of 1 to 10 mm, preferably of 2 to 6 mm. There is a gap of at least 10 mm, preferably 10 to 40 mm, between the liner and the inside of the exhaust.
    Type: Grant
    Filed: July 20, 1998
    Date of Patent: July 10, 2001
    Assignee: Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek
    Inventors: Jurriaan Gerretsen, Yvette Gertrude Roman, Everhardus Gerretsen
  • Method for manufacturing a fiber-reinforced bioactive ceramic implant
    Patent number: 6248392
    Abstract: The invention relates to a method for manufacturing a fiber-reinforced bioactive ceramic implant, wherein a base form is made from fibrous material and interspaces between the different fibers are filled using chemical vapor phase infiltration. The fibrous material is coated with a composition which optimizes the bonding with the infiltrant. Preferably, a calcium-phosphate compound is brought between the fibers, which are preferably of the continuous-fiber type.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: June 19, 2001
    Assignee: Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Ondersoek TNO
    Inventors: Rinse Alle Terpstra, Yvette Gertrude Roman, Klaas Timmer, Harmen Anne Meinema
  • Method for manufacturing a fiber-reinforced bioactive ceramic implant
    Patent number: 6093450
    Abstract: The invention relates to a method for manufacturing a fiber-reinforced bioactive ceramic implant, wherein a base form is made from fibrous material and interspaces between the different fibers are filled using chemical vapor phase infiltration. Preferably, a calcium-phosphate compound is brought between the fibers, which are preferably of the continuous-fiber type.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: July 25, 2000
    Assignee: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
    Inventors: Rinse Alle Terpstra, Yvette Gertrude Roman, Klaas Timmer, Harmen Anne Meinema