Patents by Inventor André Hamel

André Hamel 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 lance assembly and refractory lance tube
    Patent number: 12584862
    Abstract: Described are various embodiments of a refractory lance assembly and a composite refractory lance. In one embodiment, a refractory lance assembly is provided that comprises: an immersion tube having an immersion tip immersible within a melt and an extension tube coupled at an opposed end thereof to form a longitudinally extended composite tube therewith defining an optical path therein, wherein said longitudinally extended composite tube is injectable, in use, with an inert gas to form and probe an immersed melt surface. The assembly further comprises a shroud longitudinally encasing the composite tube and injectable with inert gas to mitigate fluid contamination of the composite tube and immersed melt surface.
    Type: Grant
    Filed: August 4, 2022
    Date of Patent: March 24, 2026
    Assignee: NATIONAL RESEARCH COUNCIL OF CANADA
    Inventors: André Moreau, André Hamel, Mohamad Sabsabi
  • REFRACTORY LANCE ASSEMBLY AND REFRACTORY LANCE TUBE
    Publication number: 20240344995
    Abstract: Described are various embodiments of a refractory lance assembly and a composite refractory lance. In one embodiment, a refractory lance assembly is provided that comprises: an immersion tube having an immersion tip immersible within a melt and an extension tube coupled at an opposed end thereof to form a longitudinally extended composite tube therewith defining an optical path therein, wherein said longitudinally extended composite tube is injectable, in use. with an inert gas to form and probe an immersed melt surface. The assembly further comprises a shroud longitudinally encasing the composite tube and injectable with inert gas to mitigate fluid contamination of the composite tube and immersed melt surface.
    Type: Application
    Filed: August 4, 2022
    Publication date: October 17, 2024
    Applicant: NATIONAL RESEARCH COUNCIL OF CANADA
    Inventors: André MOREAU, André HAMEL, Mohamad SABSABI
  • Reconfigurable ring transmission network with multiplexing in wave length for semi-permanent links
    Patent number: 6204943
    Abstract: Reconfigurable ring transmission network with multiplexing in wavelength for semi-permanent links, the network including at least one ring (10) comprising nodes (12) and at least one optical fiber (18, 20) passing through the nodes, and each site (13) in the network comprises transmission-reception means (EN, ES, RN, RS) for one or more wavelengths and each node comprises optical add-drop means (IN, IS, XN, XS) for this wavelength and optical switching means (CN, CS) to connect these means to the transmission-reception means, the network used for optical telecommunications.
    Type: Grant
    Filed: February 10, 1998
    Date of Patent: March 20, 2001
    Assignee: France Telecom
    Inventors: André Hamel, Daniel Laville, Jean Stoschek