Patents by Inventor Ramachandra A. Rao

Ramachandra A. Rao 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).

  • Publication number: 20170354644
    Abstract: Amorphous methyl((1S)-1-(((2S)-2-(5-(4?-(2-((2S)-1-((2S)-2-((methoxycarbonyl)amino)-3-methylbutanoyl)-2-pyrrolidinyl)-1H-imidazol-5-yl)-4-biphenylyl)-1H-imidazol-2-yl)-1-pyrrolidinyl) carbonyl)-2-methylpropyl) carbamate free base, amorphous methyl((1S)-1-(((2S)-2-(5-(4?-(2-((2S)-1-((2S)-2-((methoxycarbonyl)amino)-3-methylbutanoyl)-2-pyrrolidinyl)-1H-imidazol-5-yl)-4-biphenylyl)-1H-imidazol-2-yl)-1-pyrrolidinyl) carbonyl)-2-methylpropyl) carbamate dihydrochloride, methods of making them, and pharmaceutical compositions containing them.
    Type: Application
    Filed: December 24, 2015
    Publication date: December 14, 2017
    Inventors: Dharmaraj Ramachandra RAO, Geena MALHOTRA, Manjinder Singh PHULL, Shashirekha KANATHALA, Manish Gopaldas GANGRADE
  • Publication number: 20170267669
    Abstract: The present invention relates to an environmentally friendly process for preparing rivaroxaban. The present invention provides a process for preparing rivaroxaban of formula I, the process comprising: reacting a compound of formula VI with a base in the presence of a solvent to form a compound of formula VII; and condensing the compound of formula VII with a compound of formula VIII or a compound of formula IX in the presence of a solvent to prepare rivaroxaban of formula I, wherein the solvent used in both steps comprises water.
    Type: Application
    Filed: August 24, 2015
    Publication date: September 21, 2017
    Inventors: Dharmaraj Ramachandra RAO, Geena MALHOTRA, Venkata Srinivas PULLELA, Manohar Raghunath SURVE, Hemant Sanjeevan DORLE, Kiran Balasaheb JADHAV
  • Publication number: 20170240561
    Abstract: The present invention discloses a novel process for the preparation of macrocyclic ketone analogs of halichondrin B or pharmaceutically acceptable salts thereof and to novel intermediates which are produced during the course of carrying out the novel process.
    Type: Application
    Filed: September 9, 2015
    Publication date: August 24, 2017
    Inventors: Dharmaraj Ramachandra RAO, Geena MALHOTRA, Venkata Srinivas PULLELA, Vinod Parameshwaran ACHARYA, Nagarjuna Reddy VANTADOU
  • Publication number: 20170217988
    Abstract: The present invention relates to a novel process for the synthesis of everolimus of formula (I): and intermediates thereof.
    Type: Application
    Filed: August 4, 2015
    Publication date: August 3, 2017
    Inventors: Dharmaraj Ramachandra RAO, Geena MALHOTRA, Venkata Srinivas PULLELA, Vinod Parameshwaran ACHARYA
  • Patent number: 9676803
    Abstract: The present invention relates to an efficient process for the separation of diastereomers of 9-[(R)-2-[[(R,S)-[[(S)-1-(Isopropoxycarbonyl)ethyl]amino]-phenoxyphosphinyl]methoxy]propyl]adenine and to a process for preparing 9-[(R)-2-[[(R)-[[(S)-1-(Isopropoxycarbonyl)ethyl]amino]phenoxyphosphinyl]methoxy]propyl]adenine and 9-[(R)-2-[[(S)-[[(S)-1-(Isopropoxycarbonyl)ethyl]amino]phenoxyphosphinyl]methoxy]propyl]adenine.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: June 13, 2017
    Assignee: Cipla Limited
    Inventors: Dharmaraj Ramachandra Rao, Ashwini Amol Sawant, Nayan Shivalkar, Nitin Thakur
  • Patent number: 9659041
    Abstract: An aspect of the present invention provides for capturing of audit trail data related to processing of requests. In an embodiment, the received requests are classified into a first category and a second category. For each request in the first category, the corresponding audit trail data is stored directly into non-volatile storage upon processing of the request. On the other hand, for each request in the second category, the audit trail data is first stored into a volatile memory upon processing of the request, and then later copied from the volatile memory to non-volatile storage. Thus, the audit trail data corresponding to both categories of requests is eventually available stored on non-volatile storage.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: May 23, 2017
    Assignee: Oracle International Corporation
    Inventors: Govinda Raj Sambamurthy, Hari Charan Ramachandra Rao, Viswanath Pasupuleti
  • Patent number: 9630279
    Abstract: In view of the foregoing, an embodiment herein provides a method of manufacturing wheel disc, wherein said method comprising of steps providing a rectangular strip made of metallic materials, circling the strip to form a band, welding the band to form a hoop by welding process, forming one side of the hoop to make the center portion of the disc, spinning another side of the hoop to form flange of the disc, and achieving varying thickness across the disc to make variable thickness wherever needed, thereby reducing the usage of raw material and reducing wastage and making light weight wheel disc.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: April 25, 2017
    Assignee: WHEELS INDIA LIMITED
    Inventors: Badrinarayanan Ramachandra Rao, Sundararajan Thiagarajan, Rajaram Balaseshan
  • Patent number: 9505787
    Abstract: The present invention provides improved processes for the preparation of Bortezomib, tert -butyl[1-({(1S)-3-methyl-1-[(3aS,4S,6S,7aS)-3a,5,5-trimethylhexahydro-4,6-methano-1,3,2-benzodioxaborol-2-yl]butyl}amino)-1-oxo-3-phenylpropan-2-yl]carbamate of formula (IV) and N-{(1S)-3-methyl-1-[(3aS,4S,6S,7aS)-3a,5,5-trimethylhexahydro-4,6-methano-1,3,2-benzodioxaborol-2-yl]butyl} phenylalanine of formula (V). Compound (IV) is prepared by coupling (1R)-3-methyl-1-[(3aS,4S,6S,7aR)-3a,5,5-trimethyl-hexahydro-4,6-methano-1,3,2-benzodioxaborol-2-yl]butan-1-amine of formula (II) or its salt with N-(tert-butoxycarbonyl)-L -phenylalanine of formula (III) in a first solvent in the presence of a first coupling agent and a first base, wherein the coupling process does not comprise solvent exchange. Compound (V) is prepared by deprotecting compound (IV) using an alcoholic solution of an inorganic acid.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: November 29, 2016
    Assignee: Cipla Limited
    Inventors: Dharmaraj Ramachandra Rao, Rajendra Narayanrao Kankan, Srinivas Laxminarayan Pathi, Ravikumar Puppala
  • Publication number: 20160344470
    Abstract: A device is configured to store information indicating a threshold bandwidth with which a multi-lane link is permitted to operate. The device may establish the multi-lane link with a peer device. The multi-lane link may include multiple lanes used to communicate data with the peer device. The device may determine fault states for the lanes included in the multi-lane link. A fault state, for a particular lane, may indicate that the particular lane is faulty. The device may determine an available bandwidth for the multi-lane link based on the fault states for the lanes. The device may selectively terminate the multi-lane link or operate the multi-lane link at the available bandwidth based on whether the available bandwidth satisfies the threshold bandwidth.
    Type: Application
    Filed: August 5, 2016
    Publication date: November 24, 2016
    Inventors: Krishna REDDY BOVILLA, Sunil RAMACHANDRA RAO
  • Publication number: 20160247998
    Abstract: Methods for fabricating a piezoelectric device are provided. The methods can include providing a substrate and forming a nanocrystalline diamond layer on a first surface of the substrate. The methods can also include depositing a piezoelectric layer on a first surface of the nanocrystalline diamond layer.
    Type: Application
    Filed: May 2, 2016
    Publication date: August 25, 2016
    Applicant: INDIAN INSTITUTE OF TECHNOLOGY MADRAS
    Inventors: Maneesh CHANDRAN, M.S. Ramachandra RAO
  • Patent number: 9413454
    Abstract: A device is configured to store information indicating a threshold bandwidth with which a multi-lane link is permitted to operate. The device may establish the multi-lane link with a peer device. The multi-lane link may include multiple lanes used to communicate data with the peer device. The device may determine fault states for the lanes included in the multi-lane link. A fault state, for a particular lane, may indicate that the particular lane is faulty. The device may determine an available bandwidth for the multi-lane link based on the fault states for the lanes. The device may selectively terminate the multi-lane link or operate the multi-lane link at the available bandwidth based on whether the available bandwidth satisfies the threshold bandwidth.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: August 9, 2016
    Assignee: Juniper Networks, Inc.
    Inventors: Krishna Reddy Bovilla, Sunil Ramachandra Rao
  • Patent number: 9403844
    Abstract: Amorphous rifaximin, methods of making it, and pharmaceutical compositions containing it. Also described are methods of converting amorphous rifaximin to crystalline rifaximin and vice versa.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: August 2, 2016
    Assignee: Cipla Ltd.
    Inventors: Dharmaraj Ramachandra Rao, Rajendra Narayanrao Kankan, Manjinder Singh Phull, Maruti Ghagare
  • Patent number: 9400793
    Abstract: Convenient approach for managing records with respect to entities based on file plans. In an embodiment, historical data representing policies previously selected is maintained. The historical data is then used to generate custom file plans containing policies most likely to be used by a corresponding user. A list in such custom file plan may have more relevant policies prioritized higher. A user may thus conveniently select a desired policy, and associate the selected policy with a set of entities to cause the selected policies to be applied against management of the set of entities.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: July 26, 2016
    Assignee: Oracle International Corporation
    Inventors: Bhageerath Arasachetty, Shyam Babu Prasad, Hari Charan Ramachandra Rao
  • Publication number: 20160173455
    Abstract: Various aspects of a method and system for digital rights management of encrypted digital content are disclosed herein. The method includes determination of a seed value from a pre-stored vault file that corresponds to a registered user. The determination of the seed value is based on biometric information provided by the registered user. The method further includes generation of a set of intermediate values based on the determined seed value. The generation of the set of intermediate values is based on a pre-determined rule. The method further includes determination of a content key based on the generated set of intermediate values.
    Type: Application
    Filed: November 3, 2014
    Publication date: June 16, 2016
    Inventors: RAVI HONNAVALLI RAMACHANDRA RAO, VISHNUTEJA CHOKKANAHALLI, AJAY MARUTI GAONKAR
  • Patent number: 9362378
    Abstract: Methods for fabricating a piezoelectric device are provided. The methods can include providing a substrate and forming a nanocrystalline diamond layer on a first surface of the substrate. The methods can also include depositing a piezoelectric layer on a first surface of the nanocrystalline diamond layer.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: June 7, 2016
    Assignee: Indian Institute of Technology Madras
    Inventors: Maneesh Chandran, M. S. Ramachandra Rao
  • Publication number: 20160122373
    Abstract: The present invention relates to an efficient process for the separation of diastereomers of 9-[(R)-2-[[(R,S)-[[(S)-1-(Isopropoxycarbonyl)ethyl]amino]-phenoxyphosphinyl]methoxy]propyl]adenine and to a process for preparing 9-[(R)-2-[[(R)-[[(S)-1-(Isopropoxycarbonyl)ethyl]amino]phenoxyphosphinyl]methoxy]propyl]adenine and 9-[(R)-2-[[(S)-[[(S)-1-(Isopropoxycarbonyl)ethyl]amino]phenoxyphosphinyl]methoxy]propyl]adenine.
    Type: Application
    Filed: June 6, 2014
    Publication date: May 5, 2016
    Inventors: Dharmaraj Ramachandra RAO, Ashwini Amol SAWANT, Nayan SHIVALKAR, Nitin THAKUR
  • Patent number: 9309281
    Abstract: In one aspect, methods relate to the field of recombinant DNA therapeutics. Methods may involve bio-informatics design, synthesis of artificial genes for a human insulin precursor having a leader peptide coding sequence, cloning artificial genes into an expression vector, and expression in an organism such as one selected from the genus Pichia. In another aspect, methods may include downstream processing for obtaining protein precursor molecules and subsequent conversion of protein precursor molecules to functional proteins.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: April 12, 2016
    Assignee: Bigtec Private Limited
    Inventors: Mulakkapurath Narayanan Manoj, Venkata Ramachandra Rao Vasamsetty, Madhuri Baliga, Kirubakaran Naveen Kumar, Chandrasekhar Bhaskaran Nair, Pillarisetti Venkata Subbarao
  • Publication number: 20160075736
    Abstract: A novel and improved process for preparation of bortezomib mannitol ester is derived, which process avoids excessive use of solvents, involves convenient, industrially feasible and economical techniques, and provides improvements in purity over processes known in the art.
    Type: Application
    Filed: April 16, 2014
    Publication date: March 17, 2016
    Inventors: Ravikumar PUPPALA, Srinivas Laxminarayan PATHI, Dharmaraj Ramachandra RAO, Rajendra Narayanrao KANKAN
  • Patent number: 9238674
    Abstract: In one aspect, methods relate to the field of recombinant DNA therapeutics. Methods may involve bio-informatics design, synthesis of artificial genes for a human insulin precursor having a leader peptide coding sequence, cloning artificial genes into an expression vector, and expression in an organism such as one selected from the genus Pichia. In another aspect, methods may include downstream processing for obtaining protein precursor molecules and subsequent conversion of protein precursor molecules to functional proteins.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: January 19, 2016
    Assignee: Bigtec Private Limited
    Inventors: Mulakkapurath Narayanan Manoj, Venkata Ramachandra Rao Vasamsetty, Madhuri Baliga, Kirubakaran Naveen Kumar, Chandrasekhar Bhaskaran Nair, Pillarisetti Venkata Subbarao
  • Patent number: 9233967
    Abstract: There is provided a process for the preparation of sitagliptin or a pharmaceutically acceptable salt thereof, and a process for the preparation of intermediate compounds useful in the preparation of sitagliptin. In particular, there is provided a process comprising condensing 3-tert-butoxycarbonylamino-4-(2,4,5-trifluorophenyl)butyric acid of formula (II) with 3-(trifluoromethyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazine of formula (III) or a salt thereof in presence of a catalyst to obtain (R)-tert-butyl-4-oxo-4-(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]-triazolo[4,3-a]pyrazin-7(8H)-yl)-1-(2,4,5-trifluorophenyl)butan-2-yl-carbamate of formula (IV) or a pharmaceutically acceptable salt thereof. The catalyst is represented by the compound of formula (V). Compound of formula (IV) or its pharmaceutically acceptable salt obtained may be deprotected to obtain a compound of formula (I).
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: January 12, 2016
    Assignee: CIPLA Limited
    Inventors: Dharmaraj Ramachandra Rao, Rajendra Narayanrao Kankan, Maruti Ghagare, Swati Atul Kadam