Patents by Inventor Jacqueline Tan

Jacqueline Tan 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).

  • Bifocal contact lens
    Patent number: 7810925
    Abstract: A contact lens having near vision and distance vision portions, the lens being movable on the eye between first and second positions, those positions corresponding with aligning the wearer's vision through the near vision and distance vision portions respectively. The lens is positionally stable on the eye in each of the two positions, and requires a force to be applied to the lens to move between the first and second positions. Preferably the lens has a back surface and a front surface, and said back surface has either one or two major back curve zones occupying a major portion of the lens back surface.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: October 12, 2010
    Inventors: Simon Rodney Evans, Arthur Ho, Geoffrey Peter Brent, Klaus Ehrmann, Darrin Mark Falk, Sandya Indrani Perera, Jacqueline Tan, Renee Du Toit
  • BIFOCAL CONTACT LENS
    Publication number: 20090231542
    Abstract: A contact lens having near vision and distance vision portions, the lens being movable on the eye between first and second positions, those positions corresponding with aligning the wearer's vision through the near vision and distance vision portions respectively. The lens is positionally stable on the eye in each of the two positions, and requires a force to be applied to the lens to move between the first and second positions. Preferably the lens has a back surface and a front surface, and said back surface has either one or two major back curve zones occupying a major portion of the lens back surface.
    Type: Application
    Filed: April 30, 2009
    Publication date: September 17, 2009
    Inventors: Simon Rodney EVANS, Arthur Ho, Geoffrey Peter Brent, Klaus Ehrmann, Darrin Mark Falk, Sandya Indrani Perera, Jacqueline Tan, Renee Du Toit
  • Bifocal contact lens
    Patent number: 7537338
    Abstract: A contact lens having near vision and distance vision portions, the lens being movable on the eye between first and second positions, those positions corresponding with aligning the wearer's vision through the near vision and distance vision portions respectively. The lens is positionally stable on the eye in each of the two positions, and requires a force to be applied to the lens to move between the first and second positions. Preferably the lens has a back surface and a front surface, and said back surface has either one or two major back curve zones occupying a major portion of the lens back surface.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: May 26, 2009
    Inventors: Simon Rodney Evans, Arthur Ho, Geoffrey Peter Brent, Klaus Ehrmann, Darrin Mark Falk, Sandya Indrani Perera, Jacqueline Tan, Renee Du Toit
  • Bifocal contact lens
    Publication number: 20070132948
    Abstract: A contact lens having near vision and distance vision portions, the lens being movable on the eye between first and second positions, those positions corresponding with aligning the wearer's vision through the near vision and distance vision portions respectively. The lens is positionally stable on the eye in each of the two positions, and requires a force to be applied to the lens to move between the first and second positions. Preferably the lens has a back surface and a front surface, and said back surface has either one or two major back curve zones occupying a major portion of the lens back surface.
    Type: Application
    Filed: January 28, 2005
    Publication date: June 14, 2007
    Inventors: Simon Evans, Arthur Ho, Geoffrey Brent, Klaus Ehrmann, Darrin Falk, Sandya Perera, Jacqueline Tan, Renee Toit