Patents by Inventor Ashok R. Thakrar

Ashok R. Thakrar 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).

  • Publication number: 20040114101
    Abstract: A contact lens is provided including a lens body and an image component effective in producing a color shifting appearance of the contact lens. For example, the image component may include a light diffracting component made up of flakes of a multilayered interference film suspended in a polymeric medium.
    Type: Application
    Filed: December 8, 2003
    Publication date: June 17, 2004
    Applicant: Ocular Sciences, Inc.
    Inventor: Ashok R. Thakrar
  • Patent number: 6743438
    Abstract: Optical lenses and methods of preparing the same, in which an active material encapsulated in resin capsules is impregnated in said lens, adjacent an optical surface thereof. The active material may be a coloring material for producing a printed color pattern in the iris or other areas of the lens, or it may be a therapeutic agent.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: June 1, 2004
    Assignee: PBH, Inc.
    Inventors: Ashok R. Thakrar, Bradley K. Overmyer, William E. Meyers
  • Publication number: 20030117576
    Abstract: A tinted or colored contact lens has a pupil section, an iris section having an area and circumferentially surrounding the pupil section, and a colorant component extending across a major portion of the area of the iris section. The colorant component provides a color to the iris section and at least one additional benefit to the contact lens. For example, the colorant component may enhance the natural appearance of the iris section when the contact lens is in an eye. Alternatively or in addition, the colorant component may enhance the perception of depth in the iris section by an ordinary viewer. Still further, the colorant component may provide a darkened-image within an outer portion of the iris section.
    Type: Application
    Filed: November 27, 2002
    Publication date: June 26, 2003
    Applicant: Ocular Sciences, Inc.
    Inventors: Ashok R. Thakrar, J. Christopher Marmo
  • Publication number: 20020027638
    Abstract: Optical lenses and methods of preparing the same, in which an active material encapsulated in resin capsules is impregnated in said lens, adjacent an optical surface thereof. The active material may be a coloring material for producing a printed color pattern in the iris or other areas of the lens, or it may be a therapeutic agent.
    Type: Application
    Filed: November 9, 2001
    Publication date: March 7, 2002
    Inventors: Ashok R. Thakrar, Bradley K. Overmyer, William E. Meyers
  • Patent number: 6337040
    Abstract: Optical lenses and methods of preparing the same, in which an active material encapsulated in resin capsules is impregnated in said lens, adjacent an optical surface thereof. The active material may be a coloring material for producing a printed color pattern in the iris or other areas of the lens, or it may be a therapeutic agent.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: January 8, 2002
    Assignee: PBH, INC
    Inventors: Ashok R. Thakrar, Bradley K. Overmyer, William E. Meyers
  • Patent number: 6284161
    Abstract: Optical lenses and methods of preparing the same, in which an active material encapsulated in resin capsules is impregnated in said lens, adjacent an optical surface thereof. The active material may be a coloring material for producing a printed color pattern in the iris or other areas of the lens, or it may be a therapeutic agent.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: September 4, 2001
    Assignee: PBH, Inc.
    Inventors: Ashok R. Thakrar, Bradley K. Overmyer
  • Patent number: 6099926
    Abstract: Disclosed are medical devices of aliphatic polyketone polymers and/or polyketone polymer compositions comprising at least one aliphatic polyketone and at least one plasticizer. Also disclosed are polyketone compositions that comprise at least one aliphatic polyketone and at least one plasticizer.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: August 8, 2000
    Assignee: Intella Interventional Systems, Inc.
    Inventor: Ashok R. Thakrar
  • Patent number: 6093463
    Abstract: Disclosed are medical devices including a composition that includes an aliphatic polyketone and a thermoplastic polymer.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: July 25, 2000
    Assignee: Intella Interventional Systems, Inc.
    Inventor: Ashok R. Thakrar
  • Patent number: 5433898
    Abstract: Methods of manufacturing a contact lens form a mold which has a first section formed from a first material and a second section formed from a second material. The methods permit the facile preparation of contact lenses having two or more differing materials, for example, a composite lens, a bifocal lens, a trifocal lens and the like.
    Type: Grant
    Filed: September 11, 1992
    Date of Patent: July 18, 1995
    Assignee: Pilkington Barnes Hind, Inc.
    Inventors: Ashok R. Thakrar, Khushroo Gandhi
  • Patent number: 5302978
    Abstract: A contact lens of generally disc-like configuration having a central axis extending through the contact lens and about which the contact lens is substantially symmetric in configuration. The contact lens hasa pupil zone through which the central axis extends and which comprises the area immediately circumferentially surrounding the central axis;an iris zone, which comprises the area circumferentially surrounding the pupil zone; anda peripheral zone which comprises the area circumferentially surrounding the iris zone and extends to the edge of the contact lens.Further in the area immediately adjacent to the periphery of the iris zone and the contact lens and circumferentially extending therearound a band of dark substantially light-absorbing color is provided.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: April 12, 1994
    Assignee: Pilkington Visioncare, Inc.
    Inventors: John M. Evans, Ashok R. Thakrar, Praful Doshi, C. Edward Williams
  • Patent number: 5160463
    Abstract: A method of manufacturing a contact lens with an iris simulating pattern by moulding comprising applying to the mould at least two differing designs so as to form an overall pattern. This overall pattern is transferred to the surface or surfaces of the contact lens during moulding and curing thereof, where the designs transferred interact with each other to substantially cover the iris and produce a coloured natural simulation of the iris of the eye when in use.
    Type: Grant
    Filed: July 18, 1991
    Date of Patent: November 3, 1992
    Assignee: Pilkington Visioncare, Inc.
    Inventors: John M. Evans, Ashok R. Thakrar