Patents by Inventor Nirappurackal Raveendran Shiju

Nirappurackal Raveendran Shiju 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).

  • Core-shell particles with catalytic activity
    Patent number: 10005069
    Abstract: The present invention pertains to novel core-shell particles comprising a core of alumina and a shell of cobalt oxide, characterized in that they are spherical with a number average diameter, as measured by TEM, of between 10 and 30 nm. This invention also pertains to the method for preparing these core-shell particles and to their uses in the manufacture of a catalyst.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: June 26, 2018
    Assignee: Total Raffinage Marketing
    Inventors: Vincenzo Roberto Calderone, Nirappurackal Raveendran Shiju, Gad Rothenberg, Daniel Curulla-Ferre
  • Core-shell particles with catalytic activity
    Patent number: 9956545
    Abstract: The present invention pertains to novel core-shell particles comprising a core of iron oxide and a shell of cobalt oxide, characterized in that they are spherical with a number average diameter, as measured by TEM, of between 1 and 20 nm. This invention is also directed to their uses in the manufacture of a catalyst, and to the method for preparing these particles, by precipitating cobalt oxide onto magnetite or hematite particles which are themselves precipitated from Fe(III) and optionally Fe(II) salts.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: May 1, 2018
    Assignee: Total Raffinage Chimie
    Inventors: Vincenzo Roberto Calderone, Nirappurackal Raveendran Shiju, Gad Rothenberg, Daniel Curulla-Ferre
  • Core-shell particles with catalytic activity
    Patent number: 9539563
    Abstract: The present invention pertains to novel core-shell particles comprising a core of iron oxide and a shell of cobalt oxide, characterized in that they are spherical with a number average diameter, as measured by TEM, of between 1 and 20 nm. This invention is also directed to their uses in the manufacture of a catalyst, and to the method for preparing these particles, by precipitating cobalt oxide onto magnetite or hematite particles which are themselves precipitated from Fe(III) and optionally Fe(II) salts.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: January 10, 2017
    Assignee: Total Raffinage Chimie
    Inventors: Vincenzo Roberto Calderone, Nirappurackal Raveendran Shiju, Gad Rothenberg, Daniel Curulla-Ferre
  • CORE-SHELL PARTICLES WITH CATALYTIC ACTIVITY
    Publication number: 20160354762
    Abstract: The present invention pertains to novel core-shell particles comprising a core of iron oxide and a shell of cobalt oxide, characterized in that they are spherical with a number average diameter, as measured by TEM, of between 1 and 20 nm. This invention is also directed to their uses in the manufacture of a catalyst, and to the method for preparing these particles, by precipitating cobalt oxide onto magnetite or hematite particles which are themselves precipitated from Fe(III) and optionally Fe(II) salts.
    Type: Application
    Filed: August 15, 2016
    Publication date: December 8, 2016
    Inventors: Vincenzo Roberto CALDERONE, Nirappurackal Raveendran SHIJU, Gad ROTHENBERG, Daniel CURULLA-FERRE
  • Core-shell particles with catalytic activity
    Patent number: 9468910
    Abstract: The present invention pertains to novel core-shell particles comprising a core of alumina and a shell of cobalt oxide, characterized in that they are spherical with a number average diameter, as measured by TEM, of between 10 and 30 nm. This invention also pertains to the method for preparing these core-shell particles and to their uses in the manufacture of a catalyst.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: October 18, 2016
    Assignee: Total Raffinage Chimie
    Inventors: Vincenzo Roberto Calderone, Nirappurackal Raveendran Shiju, Gad Rothenberg, Daniel Curulla-Ferre
  • CORE-SHELL PARTICLES WITH CATALYTIC ACTIVITY
    Publication number: 20160296914
    Abstract: The present invention pertains to novel core-shell particles comprising a core of alumina and a shell of cobalt oxide, characterized in that they are spherical with a number average diameter, as measured by TEM, of between 10 and 30 nm. This invention also pertains to the method for preparing these core-shell particles and to their uses in the manufacture of a catalyst.
    Type: Application
    Filed: June 21, 2016
    Publication date: October 13, 2016
    Inventors: Vincenzo Roberto Calderone, Nirappurackal Raveendran Shiju, Gad Rothenberg, Daniel Curulla-Ferre
  • CORE-SHELL PARTICLES WITH CATALYTIC ACTIVITY
    Publication number: 20150306573
    Abstract: The present invention pertains to novel core-shell particles comprising a core of alumina and a shell of cobalt oxide, characterized in that they are spherical with a number average diameter, as measured by TEM, of between 10 and 30 nm. This invention also pertains to the method for preparing these core-shell particles and to their uses in the manufacture of a catalyst.
    Type: Application
    Filed: December 4, 2013
    Publication date: October 29, 2015
    Inventors: Vincenzo Roberto CALDERONE, Nirappurackal Raveendran SHIJU, Gad ROTHENBERG, Daniel CURULLA-FERRE
  • CORE-SHELL PARTICLES WITH CATALYTIC ACTIVITY
    Publication number: 20140087936
    Abstract: The present invention pertains to novel core-shell particles comprising a core of iron oxide and a shell of cobalt oxide, characterized in that they are spherical with a number average diameter, as measured by TEM, of between 1 and 20 nm. This invention is also directed to their uses in the manufacture of a catalyst, and to the method for preparing these particles, by precipitating cobalt oxide onto magnetite or hematite particles which are themselves precipitated from Fe(III) and optionally Fe(II) salts.
    Type: Application
    Filed: May 30, 2012
    Publication date: March 27, 2014
    Inventors: Vincenzo Roberto Calderone, Nirappurackal Raveendran Shiju, Gad Rothenberg, Daniel Curulla-Ferre
  • Catalytic process for the ammoximation of carbonyl compounds
    Patent number: 8278487
    Abstract: The present disclosure pertains to a process for preparing an oxime in which a carbonyl compound is reacted in the liquid phase with NH3 and H2O2 in the presence of a catalyst to form the corresponding oxime, wherein the catalyst comprises a catalytic component selected from the oxides of metals of group 5 and group 6. The use of a niobia catalyst is particularly preferred. The process according to the disclosure is suitable for the manufacture of numerous oximes, in particular cyclohexanone oxime.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: October 2, 2012
    Assignee: DSM IP Assets B.V.
    Inventor: Nirappurackal Raveendran Shiju
  • Catalytic process for the ammoximation of carbonyl compounds
    Publication number: 20110190539
    Abstract: The present disclosure pertains to a process for preparing an oxime in which a carbonyl compound is reacted in the liquid phase with NH3 and H2O2 in the presence of a catalyst to form the corresponding oxime, wherein the catalyst comprises a catalytic component selected from the oxides of metals of group 5 and group 6. The use of a niobia catalyst is particularly preferred. The process according to the disclosure is suitable for the manufacture of numerous oximes, in particular cyclohexanone oxime.
    Type: Application
    Filed: February 4, 2010
    Publication date: August 4, 2011
    Applicant: Universiteit Van Amsterdam
    Inventor: Nirappurackal Raveendran Shiju