Patents by Inventor Sanjoy Kumar Chowdhury

Sanjoy Kumar Chowdhury 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).

  • Antistatic agents, compositions thereof, and methods of manufacture
    Patent number: 7851524
    Abstract: A quaternary onium aromatic sulfonate represented by the formula: wherein each R1 independently comprises substituted or unsubstituted, aliphatic or aromatic, hydrocarbyl, carbocyclic or heterocyclic radicals, each X is selected from the group consisting of phosphorus and nitrogen; wherein “a” has a value of 0, 1 or 2, and “b” has a value of 0 or 1 with the proviso that (a+b) is equal to 1 or 2; G1 is an aromatic group; E comprises a bis(carbonyloxyalkyl)polydiorganosiloxane, a bis(carbonyloxyaryl)polydiorganosiloxane, and an ether linkage; each Y1 independently comprises hydrogen, a monovalent hydrocarbon group, alkenyl, allyl, halogen, bromine, chlorine; nitro; and OR, wherein R is a monovalent hydrocarbon group.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: December 14, 2010
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Sanjoy Kumar Chowdhury, Prakash P. Wadgaonkar, Theodorus Lambertus Hoeks, Suresh K. Rajaraman, Bhimrao D. Sarwade, Chilukuri Ver Advadhani
  • Antistatic and antidust agents, compositions thereof, and methods of manufacture
    Patent number: 7569714
    Abstract: A quaternary onium aromatic sulfonate represented by the formula: wherein each R1 independently comprises substituted or unsubstituted, aliphatic or aromatic, hydrocarbyl, carbocyclic or heterocyclic radicals, each X is selected from the group consisting of phosphorus and nitrogen; wherein “a” has a value of 0, 1 or 2, and “b” has a value of 0 or 1 with the proviso that (a+b) is equal to 1 or 2; G1 is an aromatic group; E comprises a bis(carbonyloxyalkyl) polydiorganosiloxane, a bis(carbonyloxyaryl) polydiorganosiloxane, and an ether linkage; each Y1 independently comprises hydrogen, a monovalent hydrocarbon group, alkenyl, allyl, halogen, bromine, chlorine; nitro; and OR, wherein R is a monovalent hydrocarbon group; “q” represents any integer from and including zero through the number of positions on G1 available for substitution; “t” represents an integer equal to at least one; “s” represents an integer equal to either zero or one; and “u” represents any integer including zero; with the proviso that whe
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: August 4, 2009
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Sanjoy Kumar Chowdhury, Prakash P. Wadgaonkar, Theodorus Lambertus Hoeks, Suresh K. Rajaraman, Bhimrao D. Sarwade, Chilukuri Ver Avadhani
  • ANTISTATIC AGENTS, COMPOSITIONS THEREOF, AND METHODS OF MANUFACTURE
    Publication number: 20090184442
    Abstract: A quaternary onium aromatic sulfonate represented by the formula: wherein each R1 independently comprises substituted or unsubstituted, aliphatic or aromatic, hydrocarbyl, carbocyclic or heterocyclic radicals, each X is selected from the group consisting of phosphorus and nitrogen; wherein “a” has a value of 0, 1 or 2, and “b” has a value of 0 or 1 with the proviso that (a+b) is equal to 1 or 2; G1 is an aromatic group; E comprises a bis(carbonyloxyalkyl) polydiorganosiloxane, a bis(carbonyloxyaryl) polydiorganosiloxane, and an ether linkage; each Y1 independently comprises hydrogen, a monovalent hydrocarbon group, alkenyl, allyl, halogen, bromine, chlorine; nitro; and OR, wherein R is a monovalent hydrocarbon group.
    Type: Application
    Filed: April 6, 2009
    Publication date: July 23, 2009
    Applicant: SABIC INNOVATIVE PLASTICS IP B.V.
    Inventors: Sanjoy Kumar CHOWDHURY, Prakash P. WADGAONKAR, Theodorus Lambertus HOEKS, Suresh K. RAJARAMAN, Bhimrao D. SARWADE, Chilukuri VER ADVADHANI
  • Antistatic agents and polymer compositions derived therefrom
    Patent number: 6900257
    Abstract: An antistatic additive comprises a quaternary onium organosilicon compound having the formula (I) wherein each R1 independently comprises an aliphatic or aromatic functional groups that may be substituted or unsubstituted; X comprises phosphorus or nitrogen; each R2 independently comprises an aliphatic or aromatic functional group that may be substituted or unsubstituted; each R3 independently comprises a hydrogen or an aliphatic or aromatic functional group that may be substituted or unsubstituted; and “n” has a value of about 1 to about 20.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: May 31, 2005
    Assignee: General Electric Company
    Inventors: Sanjoy Kumar Chowdhury, Theodorus Lambertus Hoeks
  • Antistatic and antidust agents, compositions thereof, and methods of manufacture
    Patent number: 6841598
    Abstract: A quaternary onium aromatic sulfonate represented by the formula: wherein each R1 independently comprises substituted or unsubstituted, aliphatic or aromatic, hydrocarbyl, carbocyclic or heterocyclic radicals, each X is selected from the group consisting of phosphorus and nitrogen; wherein “a” has a value of 0, 1 or 2, and “b” has a value of 0 or 1 with the proviso that (a+b) is equal to 1 or 2; G1 is an aromatic group; E comprises a bis(carbonyloxyalkyl) polydiorganosiloxane, a bis (carbonyloxyaryl) polydiorganosiloxane, and an ether linkage; each Y independently comprises hydrogen, a monovalent hydrocarbon group, alkenyl, allyl, halogen, bromine, chlorine; nitro; and OR, wherein R is a monovalent hydrocarbon group; “q” represents any integer from and including zero through the number of positions on G1 available for substitution; “t” represents an integer equal to at least one; “s” represents an integer equal to either zero or one; and “u” represents any integer including zero; with the proviso that whe
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: January 11, 2005
    Assignee: General Electric Company
    Inventors: Sanjoy Kumar Chowdhury, Prakash P. Wadgaonkar, Theodorus Lambertus Hoeks, Alex Bernard Scholten, Suresh K. Rajaraman, Bhimrao D. Sarwade, Chilukuri Ver Avadhani
  • Antistatic and antidust agents, compositions thereof, and methods of manufacture
    Publication number: 20040034131
    Abstract: A quaternary onium aromatic sulfonate represented by the formula: 1
    Type: Application
    Filed: August 16, 2002
    Publication date: February 19, 2004
    Applicant: General Electric Company
    Inventors: Sanjoy Kumar Chowdhury, Prakash P. Wadgaonkar, Theodorus Lambertus Hoeks, Alex Bernard Scholten, Suresh K. Rajaraman, Bhimrao D. Sarwade, Chilukuri Ver Avadhani
  • Antistatic agents and polymer compositions derived therefrom
    Publication number: 20040030015
    Abstract: An antistatic additive comprises a quaternary onium organosilicon compound having the formula (I) 1
    Type: Application
    Filed: August 6, 2002
    Publication date: February 12, 2004
    Inventors: Sanjoy Kumar Chowdhury, Theodorus Lambertus Hoeks