Patents by Inventor Lawrence D. Castleman

Lawrence D. Castleman 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).

  • Foldable intraocular disc lens
    Patent number: 4878912
    Abstract: An intraocular disc lens is provided that is fully foldable and unfoldable for intercapsular plantation in the aphakic capsular sac. The lens when thus folded is well suited for insertion through an incision such as an endophakeoemulsification incision and for unfolding with autocentration in the sac. The lens includes a posterior capsule supporting ridge for purposes of postoperative corrective laser surgery and/or barrier protection against unwanted invasive cell growth into the visual axis.
    Type: Grant
    Filed: November 9, 1988
    Date of Patent: November 7, 1989
    Inventor: Lawrence D. Castleman
  • Intraocular posterior chamber lens
    Patent number: 4547914
    Abstract: A new type of intraocular posterior chamber lens is provided for implantation in the eye following cataract extraction. The new lens is uniquely structured at its rear face such that, when implanted, a separation or an open zone is provided at the visual axis between the lens body and the posterior capsule so that, in the event of haziness or opacification of the posterior capsule, corrective surgery can later be provided in this open zone means that will allow a corrective or restorative opening to be made in the posterior capsule.
    Type: Grant
    Filed: October 31, 1983
    Date of Patent: October 22, 1985
    Inventor: Lawrence D. Castleman
  • Intraocular posterior chamber lens
    Patent number: 4547915
    Abstract: A new type of intraocular posterior chamber lens is provided for implantation in the eye following cataract extraction. The new lens is uniquely structured at its rear face such that, when implanted, a separation or an open zone is provided at the visual axis between the lens body and the posterior capsule so that, in the event of haziness or opacification of the posterior capsule, corrective surgery can later be provided in this open zone means that will allow a corrective or restorative opening to be made in the posterior capsule.
    Type: Grant
    Filed: November 16, 1984
    Date of Patent: October 22, 1985
    Assignee: Margaret L. Roszkowski
    Inventor: Lawrence D. Castleman
  • Intraocular posterior chamber lens
    Patent number: 4485499
    Abstract: A new type of intraocular posterior chamber lens is provided for implantation in the eye following cataract extraction. The new lens is uniquely structured at its rear face such that, when implanted, a separation or an open zone is provided at the visual axis between the lens body and the posterior capsule so that, in the event of haziness or opacification of the posterior capsule, corrective surgery can later be provided in this open zone means that will allow a corrective or restorative opening to be made in the posterior capsule.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: December 4, 1984
    Inventor: Lawrence D. Castleman