Patents by Inventor Sunil Singh

Sunil Singh 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).

  • Process for the preparation of optically pure isomers of 2-(4-hydroxy phenoxy)-2-methyl-butyric acid methyl ester
    Publication number: 20060194980
    Abstract: The invention provides a process for preparing R-(+)-2-(4-hydroxyphenoxy)-2-methyl-butyric acid methyl ester of the formula (1): Various embodiments and variants are provided. The invention also provides a process for preparing S-(?)-2-(4-hydroxyphenoxy)-2-methyl-butyric acid methyl ester of the formula (II) Various embodiments and variants are provided.
    Type: Application
    Filed: October 11, 2005
    Publication date: August 31, 2006
    Inventors: Potlapally Kumar, Velagala Reddy, Jangalgar Reddy, Gurram Madhaven, Sunil Singh
  • Handling assembly for fixturing ophthalmic lenses
    Patent number: 6729835
    Abstract: An assembly for orienting and fixturing an array of contact lenses in a lens-fixturing tray to enable automated picking of the lenses includes an array of tubes to which a first support tray having an array of lens receptacles each having a respective contact lens therein is removably mounted. A lens-fixturing tray having an array of lens receptacles is removably mounted to the other end of the tubes and the assembly is rotated and submerged in a fluid bath whereby the lenses release from the first support tray and float downwardly through a respective tube coming to rest in a centered, concave side-up position in a respective receptacle of the lens-fixturing tray.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: May 4, 2004
    Assignee: Bausch & Lomb Incorporated
    Inventors: William J. Appleton, Marc Bergendahl, Ted Foos, David Lewison, Raymond H. Puffer, Jr., Sunil Singh
  • Handling assembly for fixturing ophthalmic lenses
    Publication number: 20030185662
    Abstract: An assembly for orienting and fixturing an array of contact lenses in a lens-fixturing tray to enable automated picking of the lenses includes an array of tubes to which a first support tray having an array of lens receptacles each having a respective contact lens therein is removably mounted. A lens-fixturing tray having an array of lens receptacles is removably mounted to the other end of the tubes and the assembly is rotated and submerged in a fluid bath whereby the lenses release from the first support tray and float downwardly through a respective tube coming to rest in a centered, concave side-up position in a respective receptacle of the lens-fixturing tray.
    Type: Application
    Filed: March 28, 2002
    Publication date: October 2, 2003
    Inventors: William J. Appleton, Marc Bergendahl, Ted Foos, David Lewison, Raymond H. Puffer, Sunil Singh