Patents by Inventor Anup Krishnnan Appukuttan Pillai

Anup Krishnnan Appukuttan Pillai 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 manufacturing of triaryl-organo borates
    Patent number: 11242360
    Abstract: The invention relates to a process for the preparation of triaryl-organo borates from boronic ester and the use of these substances in photo initiator systems, photopolymer compositions comprising such photo initiator systems, a holographic medium comprising said photopolymer composition and the respective hologram.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: February 8, 2022
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Thomas Rölle, Ganugapati Satyanarayana, Sumana Roychowdhury, Ravindra Mahadev Patil, Anup Krishnnan Appukuttan Pillai
  • PROCESS FOR THE MANUFACTURING OF TRIARYL-ORGANO BORATES
    Publication number: 20200062786
    Abstract: The invention relates to a process for the preparation of triaryl-organo borates from boronic ester and the use of these substances in photo initiator systems, photopolymer compositions comprising such photo initiator systems, a holographic medium comprising said photopolymer composition and the respective hologram.
    Type: Application
    Filed: November 7, 2017
    Publication date: February 27, 2020
    Inventors: Thomas RÖLLE, Ganugapati SATYANARAYANA, Sumana ROYCHOWDHURY, Ravindra Mahadev PATIL, Anup Krishnnan Appukuttan PILLAI
  • Methods for purifying 2-aryl-3,3-bis(hydroxyaryl)phthalimidines
    Patent number: 10005884
    Abstract: Methods for synthesizing and purifying 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine compounds are provided. The method includes heating a reaction mixture including a phenolphthalein, a primary aryl amine, and an acid catalyst to form a phthalimidine; precipitating the phthalimidine from the reaction mixture to provide a crude phthalimidine; providing a solution including the crude phthalimidine, an additive, and at least one solvent; contacting the solution with one or more purification agents to provide a treated solution; precipitating and recovering a phthalimidine adduct from the treated solution; and recovering a purified phthalimidine compound from the adduct.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: June 26, 2018
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Anup Krishnnan Appukuttan Pillai, Shivakumar Konda, Gaurav Mediratta, Venkata Rama Narayanan Ganapathy Bhotla, Salkod Parameshwar Mallika, Pradeep Jeevaji Nadkarni
  • METHODS FOR PURIFYING 2-ARYL-3,3-BIS(HYDROXYARYL)PHTHALIMIDINES
    Publication number: 20170029562
    Abstract: Methods for synthesizing and purifying 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine compounds are provided. The method includes heating a reaction mixture including a phenolphthalein, a primary aryl amine, and an acid catalyst to form a phthalimidine; precipitating the phthalimidine from the reaction mixture to provide a crude phthalimidine; providing a solution including the crude phthalimidine, an additive, and at least one solvent; contacting the solution with one or more purification agents to provide a treated solution; precipitating and recovering a phthalimidine adduct from the treated solution; and recovering a purified phthalimidine compound from the adduct.
    Type: Application
    Filed: April 22, 2015
    Publication date: February 2, 2017
    Inventors: Anup Krishnnan Appukuttan Pillai, Shivakumar Konda, Gaurav Mediratta, Venkata Rama Narayanan Ganapathy Bhotla, Salkod Parameshwar Mallika, Pradeep Jeevaji Nadkarni