Patents by Inventor Samir Hujur Chikkali

Samir Hujur Chikkali 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).

  • Patent number: 12060363
    Abstract: Embodiments of this disclosure are directed to isohexide-dioxalates compounds of formula (I), and polymerization processes that utilize diols, oxalic acid, and compounds according to formula (I): Embodiments of this disclosure also include polyoxalates compounds of formula (II), polymerization processes for the production of polymers having a general structure according to formula (II):
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: August 13, 2024
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Samir Hujur Chikkali, Kadhiravan Shanmuganathan, Bhausaheb Rajput, Farsa Ram
  • Publication number: 20230201815
    Abstract: The present invention discloses a homogeneous, single site catalyst of formula (I) and a process for preparation thereof using a ligand. The present invention further discloses a process for preparation of linear polyethylene of high molecular weight and degree of crystallinity by using the homogeneous, single site catalyst of formula I.
    Type: Application
    Filed: May 28, 2021
    Publication date: June 29, 2023
    Inventors: Samir Hujur CHIKKALI, Shailaja JAWOOR, Rajkumar S. BIRAJDAR, Sandip B. PAWAL, Nandakumar THENMANI, Parivesh CHUGH
  • Patent number: 11267833
    Abstract: The present invention relates to isomerizing hydroformylation of plant oils to feedstock chemicals and monomers. More particularly, the present invention relates to compound of formula (I) and process for preparation thereof using isomerizing functionalization of cashew nut shell liquid (CNSL).
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: March 8, 2022
    Assignee: Council of Scientific & Industrial Research
    Inventors: Samir Hujur Chikkali, Swechchha Pandey
  • Publication number: 20220048917
    Abstract: The present invention provides highly efficient process for the preparation of enantiomerically enriched Sitagliptin of Formula (Ia). More particularly, a direct rhodium catalyzed asymmetric hydrogenation in the presence of bis-phosphine chiral ligand has been developed to yield enantiopure Sitagliptin product with the highest enantiomeric excess of 85-99.9%.
    Type: Application
    Filed: December 9, 2019
    Publication date: February 17, 2022
    Inventors: Samir Hujur Chikkali, Kishor Vilas Khopade
  • Patent number: 11155654
    Abstract: The present invention disclosed a novel heterogeneous catalytic system (precatalyst), process for the preparation and use thereof for the synthesis of highly crystalline, disentangled ultra high molecular weight polyethylene (UHMWPE).
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: October 26, 2021
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Samir Hujur Chikkali, Dipa Mandal, Ravindra Gote, Ketan Patel
  • Publication number: 20210147438
    Abstract: The present invention discloses an isohexide-dioxalates compound of formula (I), a process for preparation and use thereof. The present invention further discloses a polyoxalates compound of formula (II), a process for preparation and use thereof.
    Type: Application
    Filed: July 12, 2018
    Publication date: May 20, 2021
    Inventors: Samir Hujur Chikkali, Kadhiravan Shanmuganathan, Bhausaheb Rajput, Farsa Ram
  • Patent number: 10865174
    Abstract: A one-step process for hydroformylation of olefins can include iron-catalyzed hydroformylation of olefins. The process can result in the conversion of olefin in the range of 40 to 99%. A reaction mixture includes iron precursor, ligand, substrate and solvent. The reaction mixture can be pressurized with syngas (CO/H2) under constant stirring to obtain a desired aldehyde compound. The ligand can be a monodentate ligand of a phosphines or a phosphite, and the iron precursor can be [HFe(CO)4]?.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: December 15, 2020
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIALRESEARCH
    Inventors: Samir Hujur Chikkali, Swechchha Pandey
  • Patent number: 10843179
    Abstract: The present invention relates to a self assembled catalyst. More particularly, the present invention relates to a self-assembled catalyst of formula (I) comprising supramolecular phosphine and carboxylate ligands, process for preparation thereof and use of said catalyst of formula (I) in olefin polymerization.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: November 24, 2020
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Samir Hujur Chikkali, Nilesh Rajesh Mote
  • Publication number: 20200277415
    Abstract: The present invention disclosed a novel heterogeneous catalytic system (precatalyst), process for the preparation and use thereof for the synthesis of highly crystalline, disentangled ultra high molecular weight polyethylene (UHMWPE).
    Type: Application
    Filed: October 8, 2018
    Publication date: September 3, 2020
    Inventors: Samir Hujur CHIKKALI, Dipa MANDAL, Ravindra GOTE, Ketan PATEL
  • Publication number: 20200247834
    Abstract: The present invention relates to isomerizing hydroformylation of plant oils to feedstock chemicals and monomers. More particularly, the present invention relates to compound of formula (I) and process for preparation thereof using isomerizing functionalization of cashew nut shell liquid (CNSL).
    Type: Application
    Filed: April 24, 2020
    Publication date: August 6, 2020
    Applicant: Council of Scientific & Industrial Research
    Inventors: Samir Hujur Chikkali, Swechchha Pandey
  • Patent number: 10683317
    Abstract: The present invention relates to isomerizing hydroformylation of plant oils to feedstock chemicals and monomers. More particularly, the present invention relates to compound of formula (I) and process for preparation thereof using isomerizing functionalization of cashew nut shell liquid (CNSL).
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: June 16, 2020
    Assignee: Council of Scientific & Industrial Research
    Inventors: Samir Hujur Chikkali, Swechchha Pandey
  • Publication number: 20200148615
    Abstract: A one-step process for hydroformylation of olefins can include iron-catalyzed hydroformylation of olefins. The process can result in the conversion of olefin in the range of 40 to 99%. A reaction mixture includes iron precursor, ligand, substrate and solvent. The reaction mixture can be pressurized with syngas (CO/H2) under constant stirring to obtain a desired aldehyde compound. The ligand can be a monodentate ligand of a phosphines or a phosphite, and the iron precursor can be [HFe(CO)4]?.
    Type: Application
    Filed: April 27, 2018
    Publication date: May 14, 2020
    Inventors: Samir Hujur Chikkali, Swechchha Pandey
  • Patent number: 10465019
    Abstract: The present invention relates to novel polymerization catalysts. More particularly, the present invention relates to a novel catalysts for the preparation of ultra high molecular weight polyethylene (UHMWPE) and process for preparation thereof. The present invention further relates to a process for the preparation of disentangled ultra high molecular weight polyethylene (dis-UHM-WPE).
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: November 5, 2019
    Assignee: Council of Scientific and Industrial Research
    Inventors: Samir Hujur Chikkali, Ketan Patel
  • Publication number: 20190292209
    Abstract: The present invention relates to isomerizing hydroformylation of plant oils to feedstock chemicals and monomers. More particularly, the present invention relates to compound of formula (I) and process for preparation thereof using isomerizing functionalization of cashew nut shell liquid (CNSL).
    Type: Application
    Filed: October 6, 2017
    Publication date: September 26, 2019
    Applicant: Council of Scientific & Industrial Research
    Inventors: Samir Hujur CHIKKALI, Swechchha PANDEY
  • Publication number: 20190262818
    Abstract: The present invention relates to a self assembled catalyst. More particularly, the present invention relates to a self-assembled catalyst of formula (I) comprising supramolecular phosphine and carboxylate ligands, process for preparation thereof and use of said catalyst of formula (I) in olefin polymerization.
    Type: Application
    Filed: July 28, 2017
    Publication date: August 29, 2019
    Applicant: Council of Scientific & Industrial Research
    Inventors: Samir Hujur CHIKKALI, Nilesh Rajesh MOTE
  • Patent number: 10266621
    Abstract: The present invention discloses nitrile ligated transition metal-phosphinobenzene-sulfonate complex of formula (I) as catalyst for insertion-copolymerization of mono and bis functionalized vinyl monomers with ethylene or other olefins. In particular, the present invention discloses nitrile ligated metal-phosphinobenzene-sulfonate complex of formula (I) as catalyst for insertion-copolymerization of mono and bis functionalized vinyl monomers with ethylene and or other olefins and to the process for preparation thereof. The invention further discloses a process for the insertion-(co)polymerization of mono and bis functionalized vinyl monomers with olefms catalyzed by the catalyst of formula (I).
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: April 23, 2019
    Assignee: Council of Scientific and Industrial Research
    Inventors: Samir Hujur Chikkali, Shahaji Rajaram Gaikwad
  • Publication number: 20180171039
    Abstract: The present invention relates to novel polymerization catalysts. More particularly, the present invention relates to a novel catalysts for the preparation of ultra high molecular weight polyethylene (UHMWPE) and process for preparation thereof. The present invention further relates to a process for the preparation of disentangled ultra high molecular weight polyethylene (dis-UHMWPE).
    Type: Application
    Filed: June 22, 2016
    Publication date: June 21, 2018
    Inventors: Samir Hujur CHIKKALI, Ketan PATEL
  • Publication number: 20170362352
    Abstract: The present invention discloses nitrile ligated transition metal-phosphinobenzene-sulfonate complex of formula (I) as catalyst for insertion-copolymerization of mono and bis functionalized vinyl monomers with ethylene or other olefins. In particular, the present invention discloses nitrile ligated metal-phosphinobenzene-sulfonate complex of formula (I) as catalyst for insertion-copolymerization of mono and bis functionalized vinyl monomers with ethylene and or other olefins and to the process for preparation thereof. The invention further discloses a process for the insertion-(co)polymerization of mono and bis functionalized vinyl monomers with olefms catalyzed by the catalyst of formula (I).
    Type: Application
    Filed: September 10, 2015
    Publication date: December 21, 2017
    Inventors: Samir Hujur Chikkali, Shahaji Rajaram Gaikwad
  • Patent number: 9815934
    Abstract: Potentially degradable isohexide based compounds and their polymers, derived from renewable resources, are described. Degradable isohexide-based monomers and polymers obtained from renewable resources are also described. Finally, processes for synthesizing such degradable polymers via copolymerization of the isohexide-based monomers and long chain diols are disclosed.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: November 14, 2017
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Samir Hujur Chikkali, Bhausaheb Shivaji Rajput
  • Publication number: 20160083506
    Abstract: The present invention discloses isohexide based compounds and their polymers which are derived from renewable resources and are potentially degradable. Also disclosed herein is the synthesis of isohexide based monomers and their polymers from renewable resources which are potentially degradable. Further, the present invention disclose a process for the synthesis of isohexide based copolymers via copolymerization of isohexide based monomers and long chain diols, which are degradable.
    Type: Application
    Filed: May 9, 2014
    Publication date: March 24, 2016
    Inventors: Samir Hujur Chikkali, Bhausaheb Shivaji Rajput