Patents by Inventor Rajyashri Ramakrishna Karur

Rajyashri Ramakrishna Karur 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: 10981975
    Abstract: The present invention describes a simple purification process for recombinant human serum albumin. The process results in highly purified protein with limited number of purification steps. The broth containing human albumin is clarified by centrifugation and microfiltration, diafiltered and captured by cation exchange chromatography by a process that allows 140-230 mg of albumin to be captured per ml of resin. Product related impurities are removed by hydrophobic interaction chromatography, optimised to allow 87-97% recovery in flow through mode. The final series of processes are so combined that there is easy transition from one step to the next with minimal interventions and adjustments. The entire process of purification is completed within two days from harvest to final product. Thus a cost-effective process with improved recovery of protein at each step is developed. The purified human serum albumin is analyzed for purity and shows physicochemical characteristics that are similar to standard albumin.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: April 20, 2021
    Assignee: SHILPA BIOLOGICALS PVT. LTD.
    Inventor: Rajyashri Ramakrishna Karur
  • Publication number: 20190367582
    Abstract: The present invention describes a simple purification process for recombinant human serum albumin. The process results in highly purified protein with limited number of purification steps. The broth containing human albumin is clarified by centrifugation and microfiltration, diafiltered and captured by cation exchange chromatography by a process that allows 140-230 mg of albumin to be captured per ml of resin. Product related impurities are removed by hydrophobic interaction chromatography, optimised to allow 87-97% recovery in flow through mode. The final series of processes are so combined that there is easy transition from one step to the next with minimal interventions and adjustments. The entire process of purification is completed within two days from harvest to final product. Thus a cost-effective process with improved recovery of protein at each step is developed. The purified human serum albumin is analyzed for purity and shows physicochemical characteristics that are similar to standard albumin.
    Type: Application
    Filed: July 12, 2019
    Publication date: December 5, 2019
    Applicant: NAVYA BIOLOGICALS PVT LTD.
    Inventor: Rajyashri Ramakrishna KARUR
  • Patent number: 10377812
    Abstract: The present invention describes a simple purification process for recombinant human serum albumin. The process results in highly purified protein with limited number of purification steps. The broth containing human albumin is clarified by centrifugation and microfiltration, diafiltered and captured by cation exchange chromatography by a process that allows 140-230 mg of albumin to be captured per ml of resin. Product related impurities are removed by hydrophobic interaction chromatography, optimized to allow 87-97% recovery in flow through mode. The final series of processes are so combined that there is easy transition from one step to the next with minimal interventions and adjustments. The entire process of purification is completed within two days from harvest to final product. Thus a cost-effective process with improved recovery of protein at each step is developed. The purified human serum albumin is analyzed for purity and shows physicochemical characteristics that are similar to standard albumin.
    Type: Grant
    Filed: January 1, 2016
    Date of Patent: August 13, 2019
    Assignee: NAVYA BIOLOGICALS PVT LTD
    Inventor: Rajyashri Ramakrishna Karur
  • Publication number: 20170349645
    Abstract: The present invention describes a simple purification process for recombinant human serum albumin. The process results in highly purified protein with limited number of purification steps. The broth containing human albumin is clarified by centrifugation and microfiltration, diafiltered and captured by cation exchange chromatography by a process that allows 140-230 mg of albumin to be captured per mi of resin. Product related impurities are removed by hydrophobic interaction chromatography, optimised to allow 87-97% recovery in flow through mode. The final series of processes are so combined that there is easy transition from one step to the next with minimal interventions and adjustments. The entire process of purification is completed within two days from harvest to final product. Thus a cost-effective process with improved recovery of protein at each step is developed. The purified human serum albumin is analyzed for purity and shows physicochemical characteristics that are similar to standard albumin.
    Type: Application
    Filed: January 1, 2016
    Publication date: December 7, 2017
    Applicant: NAVYA BIOLOGICALS PVT LTD.
    Inventor: Rajyashri Ramakrishna KARUR
  • Patent number: 8030543
    Abstract: The invention describes a highly improved, reproducible and a consistent method of transformation and regeneration that results in obtaining 12-15% transgenic plants. The present invention relates to a method of selecting genetically transformed Sunflower explants based on their ability to utilize Xylose as a sole carbohydrate source. Further disclosed is the nucleic acid sequence of the Xylose Isomerase gene, vector construction for incorporation of the selection marker gene and the process of Agrobacterium Mediated Transformation of target host plant with the vector comprising the gene encoding the enzyme Xylose isomerase under the functional combination of the heterologous regulatory sequences. Also disclosed is the method of selecting the putative transformants post transformation with the said vector that possess a metabolic advantage of utilizing Xylose as a sole carbon source.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: October 4, 2011
    Assignee: Avesthagen Limited
    Inventors: Villoo Morawala Patell, Rajyashri Ramakrishna Karur