Patents by Inventor Detlef Erich Schuhmann

Detlef Erich Schuhmann 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: 5876857
    Abstract: A coextruded, biaxially orientated film comprising a base layer, which comprises a polypropylene or a polypropylene mixture, and at least one top layer comprising olefinic polymers. The top layer comprises a combination of inorganic and/or organic particles and tertiary aliphatic amine of the formula I ##STR1## in which R.sup.1 essentially is an at least partially unsaturated alkyl radical having at least 18 carbon atoms or an essentially completely saturated alkyl radical having 8 to 26 carbon atoms andR.sup.2 and R.sup.3 are identical or different and are R.sup.4 --CH.sub.2 OH, in which R.sup.4 is an essentially saturated C.sub.1 -C.sub.6 -alkyl radical.The film is useful, for example, as a label or wrapping.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: March 2, 1999
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Detlef Erich Schuhmann, Thomas Dries, Adolf Wilhelm, Dieter Scheidecker, Harald Lohmann, Ursula Murschall, Herbert Peiffer, Gunter Schloegl
  • Patent number: 5851640
    Abstract: A sealable, transparent, biaxially oriented multilayer polypropylene film comprising a core layer, optionally one or more intermediate layers located on one or both sides of the core layer, and at least one top layer on the one or more intermediate layers or on one or both sides of the core layer, wherein the core layer contains a polypropylene polymer or a polypropylene mixture; the optional intermediate layers consist essentially of a polypropylene polymer or a polypropylene mixture; and wherein at least one top layer is sealable, comprises a polyolefin copolymer or terpolymer, has a thickness of .ltoreq.0.4 .mu.m, and does not contain silicon dioxide or polydimethylsiloxane. The film is suitable as a packaging or wrapping film.
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: December 22, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Detlef Erich Schuhmann, Herbert Peiffer, Gunter Schloegl