Patents by Inventor Johannes W. Hofstraat

Johannes W. Hofstraat 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: 7547926
    Abstract: An electronic device comprising a heterojunction, wherein the heterojunction comprises a blend comprising an electron donor and an electron acceptor; and wherein the blend is treated so as to form one or more linkages between the electron donor and/or electron acceptor in the treated blend.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: June 16, 2009
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Sepas Setayesh, Johannes W. Hofstraat
  • Patent number: 6818453
    Abstract: The invention pertains to a non-fluorescent label which is suitable for making a charge-transfer fluorescent probe having a donor-bridge-acceptor structure, characterized in that the label comprises a maleimide moiety and the donor-bridge-acceptor structure, wherein the bridge is a group which leads to an all-trans orbital coupling of the donor and the acceptor, and the donor-bridge-acceptor structure has a higher energy charge-transfer emissive state than at least one non-emissive state of part of the label comprising the maleimide moiety, which non-emissive state must have a higher energy than the charge-transfer emissive state of the donor-bridge-acceptor structure after coupling of the maleimide moiety to a suitable system.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: November 16, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Johannes W. Hofstraat, Jan W. Verhoeven, Marijn Goes