Patents by Inventor Howard PURCELL

Howard PURCELL 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).

  • Systems and methods for measuring refractive error and ophthalmic lenses provided therefrom
    Patent number: 9980638
    Abstract: Systems and methods for providing identification factors for an individual wearer. Some or all of the identification factors when within a predetermined value provide a prescription and corrective ophthalmic lenses for a selected individual wearer, the corrective ophthalmic lens having at least one correction that is to the nearest 0.20 diopter, or is in a range between about the nearest 0.01 diopter and about the nearest 0.20 diopter. The prescription and corrective ophthalmic lenses are obtained by at least first analysis performed with a first instrument, a second analysis performed with a second instrument, and a third analysis performed with a third instrument, in which each instrument is different, and each analysis is different.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: May 29, 2018
    Assignee: ESSILOR INTERNATIONAL (Compagnie Generale d'Optique)
    Inventors: Gabriel Keita, Howard Purcell
  • SYSTEMS AND METHODS FOR MEASURING REFRACTIVE ERROR AND OPHTHALMIC LENSES PROVIDED THEREFROM
    Publication number: 20170265738
    Abstract: Systems and methods for providing identification factors for an individual wearer. Some or all of the identification factors when within a predetermined value provide a prescription and corrective ophthalmic lenses for a selected individual wearer, the corrective ophthalmic lens having at least one correction that is to the nearest 0.20 diopter, or is in a range between about the nearest 0.01 diopter and about the nearest 0.20 diopter. The prescription and corrective ophthalmic lenses are obtained by at least first analysis performed with a first instrument, a second analysis performed with a second instrument, and a third analysis performed with a third instrument, in which each instrument is different, and each analysis is different.
    Type: Application
    Filed: November 20, 2014
    Publication date: September 21, 2017
    Applicant: ESSILOR INTERNATIONAL (Compagnie Generale d'Optique)
    Inventors: Gabriel KEITA, Howard PURCELL