Patents by Inventor Ronald Shade Hamilton

Ronald Shade Hamilton 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).

  • Patent number: 7225919
    Abstract: A package (10+20+30) for contact lenses (10), especially ‘daily-disposable’ lenses, in which the overall volume of the package and the internal volumes of the lens-holding cavities (20) in the package are minimised. The packages are preferably multi-cavity packages, with each cavity holding a single lens and all the lenses being inserted into their respective cavities with a common orientation such that a wearer of the contact lenses has the assurance that a lens can always be retrieved from a cavity in a standard orientation. The internal surface (24) of a cavity preferably deviates from sphericity by being formed with undulations (50) to break capillary attraction between the lens and the cavity wall (24) so aiding extraction of the lens from the cavity. On the instructions of an ophthalmic practitioner, packages of suitable lenses can be made up and dispatched by courier or by post to wearer of the lenses.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: June 5, 2007
    Assignee: Provis Limited
    Inventor: Ronald Shade Hamilton