Patents by Inventor Gilbert D. Pujol

Gilbert D. Pujol 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).

  • Apparatus for forming glass sheets with coaxial cavities
    Patent number: 5970747
    Abstract: A glass ceramic or glass-ceramic sheet is formed by progressively reducing the thickness of the sheet by passing the sheet between successive pairs of counter-rotating rollers. The average viscosity of the sheet is maintained between 5.times.10.sup.4 and 10.sup.9 P during the sheet forming operation.
    Type: Grant
    Filed: January 4, 1999
    Date of Patent: October 26, 1999
    Assignee: Corning Incorporated
    Inventors: Allan M. Fredholm, Claude F. M. Gille, Gilbert D. Pujol
  • Method for forming glass sheets
    Patent number: 5885315
    Abstract: A glass ceramic or glass-ceramic sheet is formed by progressively reducing the thickness of the sheet by passing the sheet between successive pairs of counterrotating rollers. The average viscosity of the sheet is maintained between 5.times.10.sup.4 and 10.sup.9 P during the sheet forming operation.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: March 23, 1999
    Assignee: Corning Incorporated
    Inventors: Allan M. Fredholm, Claude F.M. Gille, Gilbert D. Pujol
  • Method and apparatus for molding glass
    Patent number: 5676721
    Abstract: A method and apparatus for pressing glass articles. A single mold may be utilized for each article being pressed. The plunger has a ring-like member movably attached thereto. After pressing, when the plunger is retracted from the plunger, the plunger retains the glass article thereon. The ring-like member is then lowered relative to the plunger, thereby removing the pressed article therefrom.
    Type: Grant
    Filed: July 14, 1995
    Date of Patent: October 14, 1997
    Assignee: Corning Incorporated
    Inventors: Allan M. Fredholm, Gilbert D. Pujol
  • Process and apparatus for manufacturing networks of optical microlenses
    Patent number: 5623368
    Abstract: A plate of a deformable optical material is pressed against a rigid surface furrowed with a congruent network of alveoli by subjecting the two faces of the plate to fluid pressures of different values, the pressure on the face opposite the alveolate surface being less than the pressure on the other face of that plate. The alveoli are deeper than the thickness of the convex part of the microlenses formed therein by permanent deformation of the plate under the applied pressure.
    Type: Grant
    Filed: June 29, 1995
    Date of Patent: April 22, 1997
    Assignee: Corning Incorporated
    Inventors: Pierre V. Calderini, Thierry L. A. Dannoux, Gilbert D. Pujol, Jean-Pierre Themont
  • Automatic machine for moulding glass articles
    Patent number: 4990172
    Abstract: The invention relates to the moulding of glass articles.It concerns an automatic machine for moulding glass articles by means of pressing, comprising a single split mould (1), means for opening and closing the mould, means (9, 10) for introducing a metered batch of molten glass into the said mould, pressing means (12) in order to shape the batch of molten glass introduced into the said mould, and means for taking away the shaped glass article, characterized in that the mould has means (16) for periodically cooling using a pulse of cooling fluid, and in that it additionally comprises a plurality of mould bases (13) capable of being brought successively into a position in which they complete the said mould, the said mould bases additionally serving to take away the still malleable glass article having just been moulded.
    Type: Grant
    Filed: March 20, 1990
    Date of Patent: February 5, 1991
    Assignee: Corning Incorporated
    Inventors: Gilbert D. Pujol, Ian F. Rae