Patents by Inventor Prashant Santan

Prashant Santan 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: 12259523
    Abstract: A hydrophobic and/or oleophobic coating system for an ophthalmic lens having increased effective thickness and water contact angle. In one embodiment, the hydrophobic and/or oleophobic coating system comprises an anti-reflective coating applied to an ophthalmic lens, the anti-reflective coating comprising alternating layers of high and low index materials with an outer layer of silicon dioxide having exposed hydroxyl groups. A hydrophobic coating is applied to the anti-reflective coating, the hydrophobic coating comprising a silane with a hydrophobic group and fewer than three reactive groups capable of bonding to the exposed hydroxyl groups of the anti-reflective coating.
    Type: Grant
    Filed: August 17, 2023
    Date of Patent: March 25, 2025
    Assignee: Essilor Laboratories of America, Inc.
    Inventor: Prashant Santan
  • Publication number: 20230393308
    Abstract: A hydrophobic and/or oleophobic coating system for an ophthalmic lens having increased effective thickness and water contact angle. In one embodiment, the hydrophobic and/or oleophobic coating system comprises an anti-reflective coating applied to an ophthalmic lens, the anti-reflective coating comprising alternating layers of high and low index materials with an outer layer of silicon dioxide having exposed hydroxyl groups. A hydrophobic coating is applied to the anti-reflective coating, the hydrophobic coating comprising a silane with a hydrophobic group and fewer than three reactive groups capable of bonding to the exposed hydroxyl groups of the anti-reflective coating.
    Type: Application
    Filed: August 17, 2023
    Publication date: December 7, 2023
    Applicant: Essilor Laboratories of America, Inc.
    Inventor: Prashant SANTAN
  • Patent number: 11774639
    Abstract: A hydrophobic and/or oleophobic coating system for an ophthalmic lens having increased effective thickness and water contact angle. In one embodiment, the hydrophobic and/or oleophobic coating system comprises an anti-reflective coating applied to an ophthalmic lens, the anti-reflective coating comprising alternating layers of high and low index materials with an outer layer of silicon dioxide having exposed hydroxyl groups. A hydrophobic coating is applied to the anti-reflective coating, the hydrophobic coating comprising a silane with a hydrophobic group and fewer than three reactive groups capable of bonding to the exposed hydroxyl groups of the anti-reflective coating.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: October 3, 2023
    Assignee: Essilor Laboratories of America, Inc.
    Inventor: Prashant Santan
  • Patent number: 11016313
    Abstract: A thin film coating for an ophthalmic lens is provided, that comprises alternating layers of high and low index materials. The coating attenuates the transmission of light and has a spectral reflectance curve characterized by a reflectance of at least about 90% in a range from 320 nm to 420 nm, by 50% at 440 nm, by 5% or less at 460 nm, and wherein the spectral reflectance curve is monotonically or strictly decreasing between 420 nm to 460 nm.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: May 25, 2021
    Assignee: Signet Armorlite, Inc.
    Inventors: Prashant Santan, Newton M. Tarleton
  • Publication number: 20200301047
    Abstract: A hydrophobic and/or oleophobic coating system for an ophthalmic lens having increased effective thickness and water contact angle. In one embodiment, the hydrophobic and/or oleophobic coating system comprises an anti-reflective coating applied to an ophthalmic lens, the anti-reflective coating comprising alternating layers of high and low index materials with an outer layer of silicon dioxide having exposed hydroxyl groups. A hydrophobic coating is applied to the anti-reflective coating, the hydrophobic coating comprising a silane with a hydrophobic group and fewer than three reactive groups capable of bonding to the exposed hydroxyl groups of the anti-reflective coating.
    Type: Application
    Filed: March 19, 2020
    Publication date: September 24, 2020
    Inventor: Prashant Santan
  • Publication number: 20190107737
    Abstract: A thin film coating for an ophthalmic lens is provided, that comprises alternating layers of high and low index materials. The coating attenuates the transmission of light and has a spectral reflectance curve characterized by a reflectance of at least about 90% in a range from 320 nm to 420 nm, by 50% at 440 nm, by 5% or less at 460 nm, and wherein the spectral reflectance curve is monotonically or strictly decreasing between 420 nm to 460 nm.
    Type: Application
    Filed: December 10, 2018
    Publication date: April 11, 2019
    Inventors: Prashant Santan, Newton M. Tarleton
  • Patent number: 10191305
    Abstract: A thin film coating for an ophthalmic lens is provided, that comprises alternating layers of high and low index materials. The coating attenuates the transmission of light and has a spectral reflectance curve characterized by a reflectance of at least about 90% in a range from 320 nm to 420 nm, by 50% at 440 nm, by 5% or less at 460 nm, and wherein the spectral reflectance curve is monotonically or strictly decreasing between 420 nm to 460 nm.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: January 29, 2019
    Assignee: Signet Armorlite, Inc.
    Inventors: Prashant Santan, Newton M. Tarleton
  • Patent number: 10018530
    Abstract: A system is disclosed for measuring the transmission of light through a pair of eyeglasses having least one eyeglass lens mounted in a spectacle frame having a position of wear. The system comprises a light source, a support for mounting the eyeglasses, and a light detector coupled to the support. The support is configured to mount the eyeglasses with the position of wear relative to the light detector. A microprocessor is coupled to the light detector, and a display coupled to the processor. The processor receives spectral data from the light detector and outputs the spectral data to the display as a spectral curve.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: July 10, 2018
    Assignee: Signet Armorlite, Inc.
    Inventors: Prashant Santan, Newton M. Tarleton, Gavin Ho
  • Publication number: 20170284894
    Abstract: A system is disclosed for measuring the transmission of light through a pair of eyeglasses having least one eyeglass lens mounted in a spectacle frame having a position of wear. The system comprises a light source, a support for mounting the eyeglasses, and a light detector coupled to the support. The support is configured to mount the eyeglasses with the position of wear relative to the light detector. A microprocessor is coupled to the light detector, and a display coupled to the processor. The processor receives spectral data from the light detector and outputs the spectral data to the display as a spectral curve.
    Type: Application
    Filed: April 1, 2016
    Publication date: October 5, 2017
    Inventors: Prashant Santan, Newton M. Tarleton, Gavin Ho
  • Publication number: 20170192255
    Abstract: A thin film coating for an ophthalmic lens is provided, that comprises alternating layers of high and low index materials. The coating attenuates the transmission of light and has a spectral reflectance curve characterized by a reflectance of at least about 90% in a range from 320 nm to 420 nm, by 50% at 440 nm, by 5% or less at 460 nm, and wherein the spectral reflectance curve is monotonically or strictly decreasing between 420 nm to 460 nm.
    Type: Application
    Filed: December 30, 2015
    Publication date: July 6, 2017
    Inventors: Prashant Santan, Newton M. Tarleton