Patents by Inventor Erwin Endres

Erwin Endres 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).

  • Erythrocyte-retention substrates
    Patent number: 5055195
    Abstract: The present invention provides erythrocyte-retention substrates of the general formula:R.sub.1 --Sp--R.sub.2in which Sp is a bridge serving as a spacer, R.sub.1 is a strongly polar group and R.sub.2 is also a strongly polar group or, when Sp is an electron-conductive group, R.sub.2 can also be a polarizable group.The present invention also provides a process for the separation of erythrocytes from whole blood, wherein whole blood is brought into contact with one of the above substrates and subsequently filtered through a filter layer and the separated plasma obtained.
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: October 8, 1991
    Assignee: Boehringer Mannheim GMBH
    Inventors: Heinz-Friedrich Trasch, Erwin Endres, Andreas Trost, Walter Rittersdorf