Johnson and Johnson Vision Care, Inc.

Gerald Robert Krebsbach

Scott Frederick Ansell

Robert MacDonald Smith

Carl G Crowe, Jr

Jan Albert Maria Windey

Kenneth W Foley, Jr

Gregory L Berckmiller

Michael William Litwin

Robert B Phillips

Timothy P Freeman

Richard J Fox

Thomas R Daniels

Richard F Barbas

This invention provides a mold for forming a contact lens comprising an overflow collector, which causes the overflow reactive mixture to be accumulated, and not to spread out as it would upon the typically flat surface of a prior art mold. This invention further provides a method of preventing the formation of contaminating pieces of overflow reactive mixture comprising the step of: preventing the overflow reactive mixture from spreading out on the mold.

Mold for forming a contact lens and method of preventing formation of small strands of contact lens material during contact lens manufacture

This invention provides a method and a mold for improving the release of a molded ophthalmic device from a mold. The method comprises the steps of: providing a first mold half and second mold half each having opposing top surfaces at least one of which has been hollowed out to define a cavity for forming said ophthalmic device and at least said first mold half further defining a boundary for a release element, said boundary is part of said cavity, said release element comprising a ramped surface, said cavity having a corresponding ramped surface, and said release element having its widest part near the top surface of said at least said first mold half that defines said release element therein. The mold of this invention has a hollowed-out portion as part of the cavity to provide a release element to the molded ophthalmic device.

Method and mold for making ophthalmic devices

This invention provides a mold for forming a contact lens including an overflow collector, which causes the overflow reactive mixture to be accumulated, and not to spread out as it would upon the typically flat surface of a prior art mold. This invention further provides a method of preventing the formation of contaminating pieces of overflow reactive mixture comprising the step of: preventing the overflow reactive mixture from spreading out on the mold.

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Jacksonville, FL, United States of America

Gerald Robert Krebsbach