Patents by Inventor Pierre Luthi

Pierre Luthi 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).

  • Patent number: 5236763
    Abstract: A method for engraving a series of consecutive cells in a solid surface, such as a liquid transfer surface, by impinging on the surface a pulsed laser beam in which the pulses of the laser beam are formed in a series of consecutive groups of two or more consecutive pulses and each of said groups form an individual cell in the solid surface. The article produced is also described.
    Type: Grant
    Filed: June 3, 1992
    Date of Patent: August 17, 1993
    Assignee: Praxair S. T. Technology, Inc.
    Inventor: Pierre Luthi
  • Patent number: 5143578
    Abstract: A method for engraving a series of consecutive cells in a solid surface, such as a liquid transfer surface, by impinging on the surface a pulsed laser beam in which the pulses of the laser beam are formed in a series of consecutive groups of two or more consecutive pulses and each of said groups form an individual cell in the solid surface. The article produced is also described.
    Type: Grant
    Filed: August 7, 1990
    Date of Patent: September 1, 1992
    Assignee: Union Carbide Coatings Service Technology Corporation
    Inventor: Pierre Luthi
  • Patent number: 5047116
    Abstract: The invention relates to a method for producing a liquid transfer article for use in transferring the liquid to another surface comprising the steps of:(a) coating an article with at least one layer of a coating material selected from the group consisting of ceramic and metallic carbides;(b) superimposing over the coated surface a removable mask material of discontinuous material opaque to a beam of radiation of a selected energy level;(c) directing a laser having a beam of radiation of said selected energy level onto the coated surface of the article so as to produce in the area of the coated surface not covered by the discontinuous material a pattern of wells adapted for receiving liquid and wherein said pattern of wells is defined by the area of the coated surface which is not covered by the discontinuous material; and(d) removing the mask material from the coated article.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: September 10, 1991
    Assignee: Union Carbide Coatings Service Technology Corporation
    Inventors: Pierre Luthi, Christian Hidber