Patents by Inventor Satyendra Sarmah

Satyendra Sarmah 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).

  • D1479 stable liquid BAP photoinitiator and its use in radiation curable compositions
    Patent number: 9062082
    Abstract: The invention relates to radiation curable compositions comprising a liquid 0/s(acyl)phosphine photo initiators of formula (Ï): wherein each of Ar1, Ar2 and Ar3 is independently a substituted or unsubstituted aryl group. The invention also relates to stabilized forms of liquid bis(acyl)phosphines of formula (I) and radiation curable composition comprising said stabilized photoinitiators. The radiation curable compositions are selected from the group consisting of an optical fiber coating composition and a coating composition capable of radiation cure on concrete and a coating composition capable of radiation cure on metal.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: June 23, 2015
    Assignee: DSM IP ASSETS B.V.
    Inventors: Timothy Edward Bishop, Edward Joseph Murphy, John Edmond Southwell, Satyendra Sarmah, TaiYeon Lee, John Monroe Zimmerman
  • D1479 stable liquid bap photoinitiator and its use in radiation curable compositions
    Patent number: 9062083
    Abstract: The invention relates to radiation curable compositions comprising a liquid 0/s(acyl)phosphine photo initiators of formula (I): wherein each of Ar1, Ar2 and Ar3 is independently a substituted or unsubstituted aryl group. The invention also relates to stabilized forms of liquid bis(acyl)phosphines of formula (I) and radiation curable composition comprising said stabilized photoinitiators. The radiation curable compositions are selected from the group consisting of an optical fiber coating composition and a coating composition capable of radiation cure on concrete and a coating composition capable of radiation cure on metal.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: June 23, 2015
    Assignee: DSM IP ASSETS B.V.
    Inventors: Timothy Edward Bishop, Edward Joseph Murphy, John Edmond Southwell, Satyendra Sarmah, TaiYeon Lee
  • D1479 STABLE LIQUID BAP PHOTOINITIATOR AND ITS USE IN RADIATION CURABLE COMPOSITIONS
    Publication number: 20130237626
    Abstract: The invention relates to radiation curable compositions comprising a liquid 0/s(acyl)phosphine photo initiators of formula (I): wherein each of Ar1, Ar2 and Ar3 is independently a substituted or unsubstituted aryl group. The invention also relates to stabilized forms of liquid bis(acyl)phosphines of formula (I) and radiation curable composition comprising said stabilized photoinitiators. The radiation curable compositions are selected from the group consisting of an optical fiber coating composition and a coating composition capable of radiation cure on concrete and a coating composition capable of radiation cure on metal.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 12, 2013
    Applicant: DSM IP Assets B.V.
    Inventors: Timothy Edward BISHOP, Edward Joseph Murphy, John Edmond Southwell, Satyendra Sarmah, TaiYeon Lee
  • D1479 STABLE LIQUID BAP PHOTOINITIATOR AND ITS USE IN RADIATION CURABLE COMPOSITIONS
    Publication number: 20120129969
    Abstract: The invention relates to radiation curable compositions comprising a liquid 0/s(acyl)phosphine photo initiators of formula (Ï): wherein each of Ar1, Ar2 and Ar3 is independently a substituted or unsubstituted aryl group. The invention also relates to stabilized forms of liquid bis(acyl)phosphines of formula (I) and radiation curable composition comprising said stabilized photoinitiators. The radiation curable compositions are selected from the group consisting of an optical fiber coating composition and a coating composition capable of radiation cure on concrete and a coating composition capable of radiation cure on metal.
    Type: Application
    Filed: June 21, 2011
    Publication date: May 24, 2012
    Inventors: Timothy Edward Bishop, Edward Joseph Murphy, John Edmond Southwell, Satyendra Sarmah, TaiYeon Lee