Patents by Inventor Mustafa Humbel Ahmed

Mustafa Humbel Ahmed 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).

  • REGIOSELECTIVELY SUBSTITUTED CELLULOSE ESTER BASED NEGATIVE BIREFRINGENT COMPENSATION FILMS HAVING IMPROVED WAVELENGTH DISPERSION
    Publication number: 20230074167
    Abstract: The present application discloses stretched films comprising regioselectively substituted cellulose esters and a component A: (I), (II), (III), or (IV), wherein A, B, C, R1, R2, R5, R6, R8, R9, m, n, and k are defined herein. The films exhibit negative birefringence and improved wavelength dispersion.
    Type: Application
    Filed: February 10, 2021
    Publication date: March 9, 2023
    Applicant: Eastman Chemical Company
    Inventors: Qianqian Zhang, Charles Michael Buchanan, Casey Lynn Elkins, Wesley Wayne McConnell, Bin Wang, Robert Jacks Sharpe, Mustafa Humbel Ahmed
  • 2-ETHYLHEXANOYL SUBSTITUTED CELLULOSE ESTERS
    Publication number: 20220289947
    Abstract: The present application discloses regioselectively substituted cellulose esters comprising 2-ethylhexanoyl substituents that have desirable mechanical properties that allow the cellulose esters to be stretched into larger and thinner films while still maintaining their optical properties.
    Type: Application
    Filed: August 11, 2020
    Publication date: September 15, 2022
    Applicant: Eastman Chemical Company
    Inventors: Wesley Wayne McConnell, Mustafa Humbel Ahmed, Bin Wang