Patents by Inventor K. M. Natarajan

K. M. Natarajan 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).

  • Polyacetal stabilizer formulation with improved color stability
    Patent number: 4843115
    Abstract: An oxymethylene polymer composition which exhibits a reduced tendency to form mold deposits upon molding, reduced tendency to discolor under thermal stress and low extractable formaldehyde levels is provided by utilizing as a stabilizer a major amount of superpolyamide and a minor amount of a cyclic amidine compound of the formula: ##STR1## wherein R is phenyl, polynuclear aromatic, heterocyclic, cycloaliphatic and aliphatic containing at least 6 carbon atoms, as well as substituted derivatives of the listed substituents.
    Type: Grant
    Filed: February 9, 1988
    Date of Patent: June 27, 1989
    Assignee: Hoechst Celanese Corporation
    Inventors: Andrew B. Auerbach, James L. Paul, K. M. Natarajan
  • Printable polyacetal compositions
    Patent number: 4795477
    Abstract: The printability of oxymethylene polymers such as by the heat transfer of sublimable dyes is improved by the addition of an amorphous or partially crystalline polymer to the oxymethylene polymer molding composition.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: January 3, 1989
    Assignee: Celanese Corporation
    Inventors: Rajal Kusumgar, K. M. Natarajan, Carl A. Amond