Patents by Inventor Olaf H. Dossel

Olaf H. Dossel 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).

  • Miniaturized squid module having an intermediate super conducting support for connecting squid input terminals to gradiometer wires
    Patent number: 5453691
    Abstract: A miniaturized SQUID module (10), notably for multi-channel magnetometers, for measurement of varying magnetic fields in a field strength range below 10.sup.-10 T, includes superconducting and shielded connections between a SQUID chip (19) and a gradiometer (12). The module can be mounted in the lower part of a cryostat and enables a large number of measurement points per unit of surface area. The SQUID chip (19) is arranged on a fully shielded supporting plate (18) which has a width of only a few millimeters and which is provided with electronic circuitry (23), the SQUID chip (19) being connected in a superconducting manner, at least by soldering, to the wires (11) of the gradiometer (12) via a superconducting, solderable and bondable intermediate support (27).
    Type: Grant
    Filed: August 20, 1993
    Date of Patent: September 26, 1995
    Assignee: U.S. Philips Corporation
    Inventors: Bernd R. David, Olaf H. Dossel, Wilfried Edeler, Wolfgang Hoppe, Rolf U. D. Kobs, Johann E. W. Kruger, Kai-Michael Ludeke, Gert Rabe
  • Squid magnetometer in which feedback current for a squid flux-locked-loop is conductively coupled into the input circuit of the squid
    Patent number: 5453690
    Abstract: The feedback current for the flux-locked-loop of a DC-SQUID is conductively supplied directly to the input circuit of the SQUID rather than to a separate feedback or modulation coil that is inductively coupled to the SQUID, thereby eliminating the feedback or modulation coil and simplifying construction of an integrated SQUID module.
    Type: Grant
    Filed: August 20, 1993
    Date of Patent: September 26, 1995
    Assignee: U.S. Philips Corporation
    Inventors: Johann E. W. Kruger, Olaf H. Dossel
  • Apparatus for multi-channel measurement of weak magnetic fields with squids and superconducting gradiometers on individual detachable assemblies, and method of manufacture
    Patent number: 5012190
    Abstract: Apparatus for multi-channel measurement of weak magnetic fields having assigned to each channel an assembly, which is arranged on a base carrier (30) and includes a DC-SQUID (6, 27), a gradiometer coil (8, 12, 15, 16, 37), a coupling-in coil (9, 19, 38), superconductive connecting leads (10, 17, 18, 41), and a modulation coil (7, 26). The gradiometer coil, the coupling-in coil and the SQUID are made from thin-film structures. An evaluation element (11) serves to evaluate the signals generated in each channel by the SQUIDS. A separate plate (29) is provided for each channel, on which the SQUID and the modulation coil are deposited. The assembly of gradiometer coil, connecting leads and coupling-in coil provided for each channel is deposited on a separate gradiometer carrier (12, 32). A plate is arranged on a gradiometer carrier, and the individual gradiometer carriers are attached to the base carrier.
    Type: Grant
    Filed: October 19, 1988
    Date of Patent: April 30, 1991
    Assignee: U.S. Philips Corporation
    Inventor: Olaf H. Dossel
  • Thin-film strain gauge system and method of manufacturing same
    Patent number: 4786887
    Abstract: Thin film strain gauge system consisting of an elastically deformable flexible metallic substrate on which an electrically insulating layer of a plasma-polymerized material, in particular of Si:N:O:C:H-containing compounds and thereon a structured resistance layer as well as an electrically readily conducting layer having a structure for the electrical contacting are provided.
    Type: Grant
    Filed: July 30, 1987
    Date of Patent: November 22, 1988
    Assignee: U.S. Philips Corporation
    Inventors: Udo Bringmann, Olaf H. Dossel, Klaus W. Gerstenberg, Gerhard Kursten, Reiner U. Orlowski, Detlef G. Schon