Patents by Inventor Ravindra Chandrappa

Ravindra Chandrappa 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).

  • POLYMORPHIC FORMS OF 4,5-DIHYDRO-1H-PYRROLO[2,3-F]QUINOLINE-2,7,9-TRICARBOXYLIC ACID AND ITS DISODIUM SALT, PROCESS FOR THEIR PREPARATION AND THEIR USE
    Publication number: 20170022200
    Abstract: The present disclosure relates to polymorphic form of PQQ and/or its salts represented by formula (I), wherein “n” and “m” are selected from a group consisting of: (a) “n”=3, “m”=0 and (b) “n”=1, “m”=2; and; R3 is Na+. The present disclosure also relates to a process for preparing the polymorphic form of compound of formula (I) and/or its salts, a composition comprising the polymorphic form of compound of formula (I) and/or its salts and use thereof.
    Type: Application
    Filed: April 15, 2015
    Publication date: January 26, 2017
    Applicant: ANTHEM BIOSCIENCES PRIVATE LIMITED
    Inventors: RAJULU GAVARA GOVINDA, GANESH SAMBASIVAM, TOM THOMAS PUTHIAPARAMPIL, RAVINDRA CHANDRAPPA KORAMANGALA
  • Compounds of 3-(5-substituted Oxy-2, 4-dinitrophenyl)-2-oxo-propionic acid ester, synthesis and applications thereof
    Patent number: 9115128
    Abstract: Synthesis of the novel compound 3 (3-(5-substituted Oxy-2,4-dinitro-phenyl)-2-oxo-propionic acid ester) to make Pyrroloquinoline quinone (PQQ) and using it for pharmaceutical purposes is described. More specifically, this disclosure relates to synthesizing the PQQ in an efficient method by using a novel intermediate Formula 1 resulting in a shorter process and higher yield of PQQ. A unique process to make sodium compound of PQQ using either sodium hydroxide and/or sodium carbonate is also shown.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: August 25, 2015
    Assignee: ANTHEM BIOSCIENCES PVT. LTD.
    Inventors: Tom Thomas Puthiaparampil, Ganesh Sambasivam, Rajulu Gavara Govinda, Ravindra Chandrappa Koramangala
  • COMPOUNDS OF 3-(5-SUSTITUTED OXY-2, 4-DINITROPHENYL)-2-OXO-PROPIONIC ACID ESTER, SYNTHESIS AND APPLICATIONS THEREOF
    Publication number: 20140364613
    Abstract: Synthesis of the novel compound 3 (3-(5-substituted Oxy-2,4-dinitro-phenyl)-2-oxo-propionic acid ester) to make Pyrroloquinoline quinone (PQQ) and using it for pharmaceutical purposes is described. More specifically, this disclosure relates to synthesizing the PQQ in an efficient method by using a novel intermediate Formula 1 resulting in a shorter process and higher yield of PQQ. A unique process to make sodium compound of PQQ using either sodium hydroxide and/or sodium carbonate is also shown.
    Type: Application
    Filed: March 18, 2014
    Publication date: December 11, 2014
    Applicant: ANTHEM BIOSCIENCES PVT.LTD
    Inventors: TOM THOMAS PUTHIAPARAMPIL, GANESH SAMBASIVAM, RAJULU GAVARA GOVINDA, RAVINDRA CHANDRAPPA KORAMANGALA
  • IDENTIFICATION OF CELLULOLYTIC MICROORGANISM CONTAMINATION IN FOOD AND OTHER MATERIALS
    Publication number: 20140113321
    Abstract: Compositions, kits, and methods for detecting cellulolytic microorganisms in a sample are disclosed herein. In some embodiments cellulolytic microorganisms are detected by detecting the presence of a secreted enzyme, such as but not limited to cellobiohydrolase.
    Type: Application
    Filed: August 7, 2012
    Publication date: April 24, 2014
    Applicant: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventors: Ayyappan Nair, Ramya Govindaswamy, Sunilkumar Sukumaran, Madhuri Subbiah, Kannan Thanukrishnan, Ganesh Sambasivam, Ravindra Chandrappa, Ajay Bharadwaj
  • Process for Preparation of 4-Fluoro-Alpha-[2-Methyl-1-Oxopropyl]-Gamma-Oxo-N-Beta- Diphenylbenzene Butane Amide
    Publication number: 20070249865
    Abstract: A novel process for the preparation of substantially pure 4-Fluoro-?-[2-methyl-1-oxopropyl]?-oxo-N-?-diphenyl-benzene butane amide.
    Type: Application
    Filed: August 26, 2004
    Publication date: October 25, 2007
    Applicant: BIOCON LIMITED
    Inventors: Joy Mathew, Tom Puthiaprampil, Ravindra Chandrappa, Sambasivam Ganesh
  • Amorphous HMG-CoA reductase inhibitors of desired particle size
    Patent number: 7230120
    Abstract: In one aspect, the invention provides a process for the preparation of an amorphous HMG-CoA reductase inhibitor and hydrates thereof of desired particle size, which comprises: dissolving the HMG-CoA reductase inhibitor in a hydroxylic solvent, and removing the solvent by freeze-drying.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: June 12, 2007
    Assignee: Biocon
    Inventors: Acharya Poornaprajna, Joy Mathew, Ravindra Chandrappa, Madhavan Sridharan, Sambasivam Ganesh
  • Amorphous hmg-coa reductase inhibitors of desired particle size
    Publication number: 20040186162
    Abstract: A process for the preparation of amorphous HMG-CoA reductase inhibitor and its hydrates thereof of desired particle size, which comprises: (a) dissolving the HMG-CoA reductase inhibitor in a hydroxylic solvent; (b) removing the solvent by freeze-drying.
    Type: Application
    Filed: January 12, 2004
    Publication date: September 23, 2004
    Inventors: Acharya Poornaprajna, Joy Mathew, Ravindra Chandrappa, Madhavan Sridharan, Sambasivam Ganesh