Patents by Inventor Vijaya K. RANGARI

Vijaya K. RANGARI 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).

  • Crystalline nano cellulose reinforced chitosan based films for packaging and other biodegradeable applications
    Patent number: 11661486
    Abstract: A biopolymer film is provided that comprises a combination of crystalline nano cellulose (CNC)/esterified crystalline nano cellulose (ECNC) reinforced with chitosan. The two polymer components can be present in any ratio, but an approximate CNC to ECNC 70:30 ratio is preferred. The chitosan component is derived from exoskeletons of crustaceans. Also provided are methods of preparing biopolymer film and preparing food packaging components from said biopolymer film. The CNC/ECNC mixture is dissolved in an ethanol solution and the chitin is dissolved in acetic acid and mixed together to form a polymer blend.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: May 30, 2023
    Assignee: TUSKEGEE UNIVERSITY
    Inventors: Vijaya K. Rangari, Samia Islam, Woubit Abebe
  • Crystalline nano cellulose reinforced chitosan based films for packaging and other biodegradeable applications
    Patent number: 11365297
    Abstract: A biopolymer film is provided that comprises a combination of: crystalline nano cellulose (CNC)/esterified crystalline nano cellulose (ECNC) reinforced with chitosan. The two polymer components can be present in any ratio but an approximate CNC to ECNC 70:30 ratio is preferred. The chitosan component is derived from exoskeletons of crustaceans. Also provided are methods of preparing biopolymer film and preparing food packaging components from said biopolymer film. The CNC/ECNC mixture is dissolved in an ethanol solution and the chitin is dissolved in acetic acid and mixed together to form a polymer blend.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: June 21, 2022
    Assignee: TUSKEGEE UNIVERSITY
    Inventors: Vijaya K Rangari, Samia Islam, Woubit Salah Abebe
  • CRYSTALLINE NANO CELLULOSE REINFORCED CHITOSAN BASED FILMS FOR PACKAGING AND OTHER BIODEGRADEABLE APPLICATIONS
    Publication number: 20190203001
    Abstract: A biopolymer film is provided that comprises a combination of: crystalline nano cellulose (CNC)/esterified crystalline nano cellulose (ECNC) reinforced with chitosan. The two polymer components can be present in any ratio but an approximate CNC to ECNC 70:30 ratio is preferred. The chitosan component is derived from exoskeletons of crustaceans. Also provided are methods of preparing biopolymer film and preparing food packaging components from said biopolymer film. The CNC/ECNC mixture is dissolved in an ethanol solution and the chitin is dissolved in acetic acid and mixed together to form a polymer blend.
    Type: Application
    Filed: January 3, 2019
    Publication date: July 4, 2019
    Applicant: TUSKEGEE UNIVERSITY
    Inventors: Vijaya K. RANGARI, Samia ISLAM, Woubit ABDELA