Patents by Inventor Santanu Dhara

Santanu Dhara 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: 10421777
    Abstract: Polyelectrolyte based bioactive super-absorbent material ionotropically crosslinked/neutralized involving polyvalent carboxylic acids, citrate, Kojic Acid, Alpha Arbutin along with fish scale collagen cross linked with other polyelectrolyte biopolymers preferably selected from chitosan, alginate or their combinations is used in this invention. The advancement is also directed to process of extraction of collagen of high purity from fresh water fish scale by salt and alkaline washing, crushing followed by continuous dialysis thereby minimizing the chance of collagen degradation. Also disclosed are different forms of collagen-chitosan composite biomaterial using citrate as the neutralizing buffer in combination with antimicrobial agent, antioxidant, skin plumper and melanin reducer wherein the different forms of collagen chitosan particularly sheet, flakes, powder, gel, particles, fiber, film, spray etc. reveal efficient wound healing properties.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: September 24, 2019
    Assignee: Amnivor Medicare Private Limited
    Inventors: Santanu Dhara, Pallab Majumdar, Nilanjana Maiti
  • Patent number: 10022792
    Abstract: Processing of polymer-metal blend composition involving viscosity control under ambient conditions suitable for shape forming and homogeneous green body preparation. The advancement involves effective controlling of the rate of settling of the metal particles in polymer-metal blend under ambient conditions to generate a cost effective and simple process for producing shape formable dough. Advantageously, the present invention provides a rapid, energy saving process involving minimum material loss and utilizing non hazardous solvent system such as water.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: July 17, 2018
    Assignee: The Indian Institute of Technology
    Inventors: Pavan Kumar Srivas, Kausik Kapat, Santanu Dhara
  • Publication number: 20170204136
    Abstract: Polyelectrolyte based bioactive super-absorbent material ionotropically crosslinked/neutralized involving polyvalent carboxylic acids, citrate, Kojic Acid, Alpha Arbutin along with fish scale collagen cross linked with other polyelectrolyte biopolymers preferably selected from chitosan, alginate or their combinations is used in this invention. The advancement is also directed to process of extraction of collagen of high purity from fresh water fish scale by salt and alkaline washing, crushing followed by continuous dialysis thereby minimizing the chance of collagen degradation. Also disclosed are different forms of collagen-chitosan composite biomaterial using citrate as the neutralizing buffer in combination with antimicrobial agent, antioxidant, skin plumper and melanin reducer wherein the different forms of collagen chitosan particularly sheet, flakes, powder, gel, particles, fiber, film, spray etc. reveal efficient wound healing properties.
    Type: Application
    Filed: January 13, 2017
    Publication date: July 20, 2017
    Inventors: Santanu Dhara, Pallab Majumdar, Nilanjana Maiti
  • Publication number: 20160136728
    Abstract: Processing of polymer-metal blend composition involving viscosity control under ambient conditions suitable for shape forming and homogeneous green body preparation. The advancement involves effective controlling of the rate of settling of the metal particles in polymer-metal blend under ambient conditions to generate a cost effective and simple process for producing shape formable dough. Advantageously, the present invention provides a rapid, energy saving process involving minimum material loss and utilizing non hazardous solvent system such as water.
    Type: Application
    Filed: November 12, 2015
    Publication date: May 19, 2016
    Inventors: Pavan Kumar Srivas, Kausik Kapat, Santanu Dhara