Patents by Inventor Leif Edvin Wide

Leif Edvin Wide 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).

  • Method for the determination of proteins and polypeptides
    Patent number: RE29474
    Abstract: A process comprising contacting particles of water insoluble polymers to which have been bound antibodies, by means of covalent bonds, against the protein or polypeptide to be determined, wherein a certain quantity of the protein or polypeptide is labeled with a radioactive isotope, whereupon the particles, subsequent to the reaction between the protein or the polypeptide and the antibodies attached to the particles are separated from the sample liquid and the radioactivity of the particle material and/or in the liquid is determined.
    Type: Grant
    Filed: July 23, 1975
    Date of Patent: November 15, 1977
    Assignee: Pharmacia AB
    Inventors: Rolf E. A. V. Axen, Jerker O. Porath, Leif Edvin Wide
  • Method for determining vitamin B.sub.12 and reagent therefor
    Patent number: RE29480
    Abstract: Method for determining vitamin B.sub.12 in aqueous samples by contacting said sample with radioactivity labelled vitamin B.sub.12 and with particles of water insoluble polymers to which substances capable of binding vitamin B.sub.12 have been bound, thereafter separating said particles and determining the radioactivity.
    Type: Grant
    Filed: July 23, 1975
    Date of Patent: November 22, 1977
    Assignee: Pharmacia AB
    Inventors: Rolf E. A. V. Axen, Jerker O. Porath, Leif Edvin Wide