Patents by Inventor Jan B. Svochak

Jan B. Svochak 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).

  • Multifocal contact lens and method and apparatus for making the same
    Patent number: 5743159
    Abstract: A monocentric, multivision contact lens having a single optical axis and an anterior side. A first spherical vision surface is disposed on a first portion of the anterior side and has a first radius of curvature and a first center of curvature disposed along the single optical axis. A second spherical vision surface is disposed on a second portion of the anterior side and has a second radius of curvature and a second center of curvature disposed along the single optical axis. A transition surface is disposed intermediate the first portion and the second portion and has a plurality of centers of curvature disposed along the single optical axis. A method of making a monocentric contact lens and a mandrel for mounting a lens on a lathe for producing a monocentric contact lens are disclosed.
    Type: Grant
    Filed: October 21, 1996
    Date of Patent: April 28, 1998
    Assignee: Tru-Form Optics, Inc.
    Inventors: Jan B. Svochak, Colin Howard Wess
  • Multifocal contact lens and method and apparatus for making the same
    Patent number: 5740707
    Abstract: A monocentric, multivision contact lens having a single optical axis and an anterior side. A first spherical vision surface is disposed on a first portion of the anterior side and has a first radius of curvature and a first center of curvature disposed along the single optical axis. A second spherical vision surface is disposed on a second portion of the anterior side and has a second radius of curvature and a second center of curvature disposed along the single optical axis. A transition surface is disposed intermediate the first portion and the second portion and has a plurality of centers of curvature disposed along the single optical axis. A method of making a monocentric contact lens and a mandrel for mounting a lens on a lathe for producing a monocentric contact lens are disclosed.
    Type: Grant
    Filed: October 21, 1996
    Date of Patent: April 21, 1998
    Assignee: Tru-Form Optics, Inc.
    Inventors: Jan B. Svochak, Colin Howard Wess
  • Multifocal contact lens and method and apparatus for making the same
    Patent number: 5724120
    Abstract: A monocentric, multivision contact lens having a single optical axis and an anterior side. A first spherical vision surface is disposed on first portion of the anterior side and has a first radius of curvature and a first center of curvature disposed along the single optical axis. A second spherical vision surface is disposed on a second portion of the anterior side and has a second radius of curvature and a second center of curvature disposed along the single optical axis. A transition surface is disposed intermediate the first portion and the second portion and has a plurality of centers of curvature disposed along the single optical axis. A method of making a monocentric contact lens and a mandrel for mounting a lens on a lathe for producing a monocentric contact lens are disclosed.
    Type: Grant
    Filed: October 2, 1995
    Date of Patent: March 3, 1998
    Inventors: Jan B. Svochak, Colin Howard Wess
  • Bifocal contact lens and method of making same
    Patent number: 5371976
    Abstract: A bifocal contact lens is provided having a posterior surface that is formed to fit a human cornea and an anterior surface. The bifocal contact lens has an upper portion and a lower portion when viewed in a planar view. The anterior surface includes a distance vision surface and a near vision surface. The distance vision surface is substantially semicircular in form and located in the upper portion of the bifocal lens. A near vision surface is disposed within the lower portion of the bifocal contact lens and also surrounds the distance vision surface.
    Type: Grant
    Filed: June 10, 1993
    Date of Patent: December 13, 1994
    Inventor: Jan B. Svochak
  • Bifocal contact lens and method of making same
    Patent number: 5245366
    Abstract: A bifocal contact lens is provided having a posterior surface that is formed to fit a human cornea and an anterior surface. The bifocal contact lens has an upper portion and a lower portion when viewed in a planar view. The anterior surface includes a distance vision surface and a near vision surface. The distance vision surface is substantially semicircular in form and located in the upper portion of the bifocal lens. A near vision surface is disposed within the lower portion of the bifocal contact lens and also surrounds the distance vision surface.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: September 14, 1993
    Inventor: Jan B. Svochak