Patents by Inventor Sanjay M. Rastogi

Sanjay M. Rastogi 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: 20220128839
    Abstract: An ophthalmic device is formed by additive fabrication, the optical device having an optical surface with a surface roughness on the order of less than 10 microns. A method is provided for making an ophthalmic device including an optical surface having a surface roughness of less than 10 microns by depositing on a stage in a first relative position a first lamina of particulates having a size less than 10 microns and in select configurations less than two microns and certain configurations less than one micron, and, synergistically stimulating the first lamina of particulates to form a first solidified layer.
    Type: Application
    Filed: December 15, 2021
    Publication date: April 28, 2022
    Inventors: Ronald Spoor, Sanjay M. Rastogi, Charles P. Henning
  • Patent number: 11287672
    Abstract: An ophthalmic device is formed by additive fabrication, the optical device having an optical surface with a surface roughness on the order of less than 10 microns. A method is provided for making an ophthalmic device including an optical surface having a surface roughness of less than 10 microns by depositing on a stage in a first relative position a first lamina of particulates having a size less than 10 microns and in select configurations less than two microns and certain configurations less than one micron, and, synergistically stimulating the first lamina of particulates to form a first solidified layer.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: March 29, 2022
    Assignee: Additive Ophthalmic Optics, LLC
    Inventors: Ronald Spoor, Sanjay M. Rastogi, Charles P. Henning
  • Publication number: 20180364499
    Abstract: An ophthalmic device is formed by additive fabrication, the optical device having an optical surface with a surface roughness on the order of less than 10 microns. A method is provided for making an ophthalmic device including an optical surface having a surface roughness of less than 10 microns by depositing on a stage in a first relative position a first lamina of particulates having a size less than 10 microns and in select configurations less than two microns and certain configurations less than one micron, and, synergistically stimulating the first lamina of particulates to form a first solidified layer.
    Type: Application
    Filed: August 22, 2018
    Publication date: December 20, 2018
    Inventors: Ronald Spoor, Sanjay M. Rastogi, Charles P. Henning
  • Patent number: 10139651
    Abstract: An ophthalmic device is formed by additive fabrication, the optical device having an optical surface with a surface roughness on the order of less than 10 microns. A method is provided for making an ophthalmic device including an optical surface having a surface roughness of less than 10 microns by depositing on a stage in a first relative position a first lamina of particulates having a size less than 10 microns and in select configurations less than two microns and certain configurations less than one micron, and, synergistically stimulating the first lamina of particulates to form a first solidified layer.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: November 27, 2018
    Assignee: Additive Ophthalmic Optics, LLC
    Inventors: Ronald Spoor, Sanjay M. Rastogi, Charles P. Henning
  • Publication number: 20150138499
    Abstract: An ophthalmic device is formed by additive fabrication, the optical device having an optical surface with a surface roughness on the order of less than 10 microns. A method is provided for making an ophthalmic device including an optical surface having a surface roughness of less than 10 microns by depositing on a stage in a first relative position a first lamina of particulates having a size less than 10 microns and in select configurations less than two microns and certain configurations less than one micron, and, synergistically stimulating the first lamina of particulates to form a first solidified layer.
    Type: Application
    Filed: December 22, 2014
    Publication date: May 21, 2015
    Inventors: Ronald Spoor, Sanjay M. Rastogi, Charles P. Henning
  • Patent number: 8940219
    Abstract: An ophthalmic device is formed by additive fabrication, the optical device having an optical surface with a surface roughness on the order of less than 10 microns. A method is provided for making an ophthalmic device including an optical surface having a surface roughness of less than 10 microns by depositing on a stage in a first relative position a first lamina of particulates having a size less than 10 microns and in select configurations less than two microns and certain configurations less than one micron, and, synergistically stimulating the first lamina of particulates to form a first solidified layer.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: January 27, 2015
    Inventors: Ronald Spoor, Sanjay M. Rastogi, Charles P. Henning
  • Publication number: 20090326651
    Abstract: An ophthalmic device is formed by additive fabrication, the optical device having an optical surface with a surface roughness on the order of less than 10 microns. A method is provided for making an ophthalmic device including an optical surface having a surface roughness of less than 10 microns by depositing on a stage in a first relative position a first lamina of particulates having a size less than 10 microns and in select configurations less than two microns and certain configurations less than one micron, and, synergistically stimulating the first lamina of particulates to form a first solidified layer.
    Type: Application
    Filed: December 22, 2008
    Publication date: December 31, 2009
    Inventors: Ronald Spoor, Sanjay M. Rastogi, Charles P. Henning
  • Publication number: 20090145461
    Abstract: An ophthalmic device forming system includes an inspection station configured to receive a plurality of ophthalmic devices, a fluid supply fluidly connected to the inspection station, the fluid supply containing a working fluid, and a degassing assembly fluidly connected between the fluid supply and the inspection station. The degassing assembly comprises a housing, a vacuum device, and a membrane. The vacuum device is fluidly connected to the housing adjacent to the membrane.
    Type: Application
    Filed: November 25, 2008
    Publication date: June 11, 2009
    Inventors: Sanjay M. Rastogi, William J. Appleton, Norbert Politi
  • Publication number: 20090126318
    Abstract: A packaging system for the storage of a hydrogel contact lens employs an aqueous solution including hydroxypropyl methylcellulose.
    Type: Application
    Filed: October 27, 2008
    Publication date: May 21, 2009
    Inventors: Sanjay M. Rastogi, Susan E. Burke, Thomas Menzel