Patents by Inventor Neidhard Gardiewski

Neidhard Gardiewski 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).

  • Internally plasticized vinyl chloride polymers and process for their manufacture
    Patent number: 5382636
    Abstract: An internally plasticized vinyl chloride polymer with a polycaprolactone content ranging from 32 to 40% is prepared by polymerizing vinyl chloride in the presence of polycaprolactone. The graft copolymers show good transparency, homogeneity, and processing properties.The copolymers of the present invention can be used to produce materials used in medical applications, such as, blood bags and dialysis tubing.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: January 17, 1995
    Assignee: Huels Aktiengesellschaft
    Inventors: Frank Schmidt, Neidhard Gardiewski