Patents by Inventor Sunil Sitaram Bhongale

Sunil Sitaram Bhongale 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).

  • High refractive index (meth) acrylates
    Patent number: 9505700
    Abstract: Novel aromatic hydrophobic (meth)acrylate monomers of Formula I having high refractive index (more than 1.55) are provided herein. The present invention further provides efficient and improved process for the preparation of aromatic hydrophobic monomers of Formula (I), wherein the high refractive index property can be advantageously used to make light weight optical materials with high transparency.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: November 29, 2016
    Assignee: Council of Scientific & Industrial Research
    Inventors: Surendra Ponrathnam, Ravindra Vasant Ghorpade, Nayaku Nivrati Chavan, Rajan Chelanattukizhakkemadath, Sonali Madhavrao Bhosale, Sunil Sitaram Bhongale
  • FLEXIBLE, HIGH REFRACTIVE INDEX HYDROPHOBIC COPOLYMER
    Publication number: 20150353667
    Abstract: The present invention discloses an improved hydrophobic, flexible co-polymer with high refractive index for use in ophthalmic lenses, particularly intraocular lens and to the process of preparation thereof.
    Type: Application
    Filed: January 7, 2014
    Publication date: December 10, 2015
    Inventors: SURENDRA PONRATHNAM, RAVINDRA VASANT GHORPADE, NAYAKU NIVRATI CHAVAN, KISHOR SUDAM RAJDEO, SUNIL SITARAM BHONGALE
  • HIGH REFRACTIVE INDEX (METH) ACRYLATES
    Publication number: 20150321991
    Abstract: Novel aromatic hydrophobic (meth)acrylate monomers of Formula I having high refractive index (more than 1.55) are provided herein. The present invention further provides efficient and improved process for the preparation of aromatic hydrophobic monomers of Formula (I), wherein the high refractive index property can be advantageously used to make light weight optical materials with high transparency.
    Type: Application
    Filed: June 21, 2013
    Publication date: November 12, 2015
    Inventors: Surendra PONRATHNAM, Ravindra Vasant GHORPADE, Nayaku Nivrati CHAVAN, Rajan CHELANATTUKIZHAKKEMADATH, Sonali Madhavrao BHOSALE, Sunil Sitaram BHONGALE
  • SULPHUR CONTAINING HIGH REFRACTIVE INDEX MONOMER
    Publication number: 20150284324
    Abstract: This invention discloses aromatic based sulfur containing hydrophobic acrylate monomer with high refractive index. The invention further discloses process for the preparation of 2-phenyl-2-(phenylthio)ethyl acrylate of the formula (I). This monomer can be polymerized to take the form of an optical products having high refractive index. Optical products made from this monomer having high refractive index can be thinner and provide same refractive power as product made from a material having a relatively low refractive index. In particular the polymeric material prepared from the novel monomer can be used for making intraocular lenses that are thinner than the conventionally used ones offering advantages of reduced volume of space and light weight materials.
    Type: Application
    Filed: October 30, 2013
    Publication date: October 8, 2015
    Inventors: Surendra Ponrathnam, Ravindra Vasant Ghorpade, Nayaku Nivrati Chavan, Kishor Sudam Rajdeo, Sunil Sitaram Bhongale