Patents by Inventor Ulrich E. Ahrens

Ulrich E. Ahrens 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).

  • Process and apparatus for producing sterilized and bacteria-free water
    Patent number: 4342651
    Abstract: In a process and apparatus for obtaining sterilized and bacteria-free water suitable for medicinal injections and other purposes, deionized water is supplied to a reverse osmosis filter, which is impervious to attack by bacteria and which is arranged such that its entire surface may be sterilized, to obtain a sterile permeate and a portion of the deionized water supplied to the filter is recycled. The recycled portion of deionized water may be recycled through the deionization plant from which it is derived or through a closed circuit and may be recycled in combination with the sterile permeate.
    Type: Grant
    Filed: March 14, 1980
    Date of Patent: August 3, 1982
    Assignee: Blutspendedientst der Landesverbande des Deutshen Roten Kreuzes Niedersachsen Oldenburg and Remen, GmbH
    Inventor: Ulrich E. Ahrens
  • Method for the preparation of a gamma globulin solution suitable for intravenous use
    Patent number: 4312949
    Abstract: A gamma globulin solution suitable for intravenous use is prepared by treating the gamma globulin fraction of plasma or serum obtained in known manner with a peptic enzyme at a pH value of about 4. The treatment is carried out with at most 20,000 A.E./100 g. protein at a temperature of about from 37.degree.-40.degree. C.
    Type: Grant
    Filed: February 2, 1981
    Date of Patent: January 26, 1982
    Assignee: Blutspendedienst det Landesverbande des Deutschen Roten Kreuzes Niedersachsen, Oldenburg und Bremen GmbH
    Inventor: Ulrich E. Ahrens