Patents by Inventor Richard Pfeiffer

Richard Pfeiffer 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: 11948704
    Abstract: Techniques described herein relate to systems and methods for obtaining a high temperature superconducting (HTS) cable assembly and filling the HTS cable assembly with a molten metal, such as solder.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: April 2, 2024
    Assignee: Massachusetts Institute of Technology
    Inventors: Amanda Hubbard, James Irby, Rui Vieira, William Beck, Richard Murray, Andrew Pfeiffer, Thomas Toland, William Burke
  • Publication number: 20100185411
    Abstract: An object monitor including two or more sensors for detecting two or more objects on two or more paths. Each sensor operates to detect location values of an object traveling along one of the paths. A processor receives first location values of a first object and calculates a first arrival time of the first object at a collision point. The processor receives second location values of a second object and calculates a second arrival time of the second object at the collision point. The processor operates to provide an alarm signal when the first arrival time and the second arrival time are within a safety difference value of being equal.
    Type: Application
    Filed: January 16, 2009
    Publication date: July 22, 2010
    Inventors: Randall Richard Pfeiffer, Niromi Leelamani Wijewantha
  • Patent number: 7386291
    Abstract: An off-chip signal is provided to a differential branch-line directional coupler implemented entirely on-chip. The coupler produces differential quadrature signals, which are then buffered and applied to a quadrature mixer. The coupler is implemented entirely on-chip using microstrip transmission lines. The coupler is made up of a plurality of rings and a plurality of underpasses connecting ports of the rings, wherein each of the plurality of rings is made up of four branch lines, and each branch line having an electrical length of one-quarter wavelength at the center design frequency. Coupling between the plurality of branch lines of the rings may be varied.
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: June 10, 2008
    Assignee: International Business Machines Corporation
    Inventors: Brian Allan Floyd, Ullrich Richard Pfeiffer, Scott Kevin Reynolds, Thomas Martin Zwick
  • Patent number: 6664197
    Abstract: A process for removing at least one thin-film layer from a surface of a workpiece pursuant to manufacturing a microelectronic interconnect or component is set forth. Generally stated, the process comprises the oxidation of at least a portion of the at least one thin-film layer and the etching of the oxidized thin-film layer using an etchant that selectively etches primarily the oxidized thin-film layer.
    Type: Grant
    Filed: November 1, 2001
    Date of Patent: December 16, 2003
    Assignee: Semitool, Inc.
    Inventors: E. Henry Stevens, Richard Pfeiffer
  • Publication number: 20030027430
    Abstract: A process for removing at least one thin-film layer from a surface of a workpiece pursuant to manufacturing a microelectronic interconnect or component is set forth. Generally stated, the process comprises the oxidation of at least a portion of the at least one thin-film layer and the etching of the oxidized thin-film layer using an etchant that selectively etches primarily the oxidized thin-film layer.
    Type: Application
    Filed: November 1, 2001
    Publication date: February 6, 2003
    Inventors: E. Henry Stevens, Richard Pfeiffer
  • Patent number: 6331490
    Abstract: A process for removing at least one thin-film layer from a surface of a workpiece pursuant to manufacturing a microelectronic interconnect or component is set forth. Generally stated, the process comprises the oxidation of at least a portion of the at least one thin-film layer and the etching of the oxidized thin-film layer using an etchant that selectively etches primarily the oxidized thin-film layer.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: December 18, 2001
    Assignee: Semitool, Inc.
    Inventors: E. Henry Stevens, Richard Pfeiffer
  • Patent number: 5639748
    Abstract: Alpha-adrenergic receptor antagonists having the formula: ##STR1## which are useful to produce .alpha.-adrenoceptor antagonism, pharmaceutical compositions including these antagonists, and methods of using these antagonists to produce .alpha.-adrenoceptor antagonism in mammals.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: June 17, 1997
    Assignee: SmithKline Beecham Corporation
    Inventors: Robert Michael DeMarinis, Francis Richard Pfeiffer
  • Patent number: 4540536
    Abstract: Method of manufacturing a transformer winding embedded in casting resin by winding coils respectively by themselves and independently of one another for disposition thereof in tandem in axial direction of the winding includes placing the wound coils in a substantially annular casting mold having an inner and an outer jacket, with respective impregnated corrugated mats of insulating material as spacers disposed between the inner jacket and the coils as well as between the coils and the outer jacket, the inner and the outer jackets being fixed between mold end walls at respective ends of the casting mold; and disposing the casting mold containing the wound coils in an evacuated chamber and pouring casting resin into the casting mold through an axially parallel slot formed in the outer jacket thereof.
    Type: Grant
    Filed: September 13, 1983
    Date of Patent: September 10, 1985
    Assignee: Transformatoren Union Aktiengesellschaft
    Inventors: Gerhard Altmann, Wolfgang Bendel, Rudolf Dedelmahr, Richard Pfeiffer
  • Patent number: 4488134
    Abstract: Transformer, including an iron core, high voltage and low voltage windings, at least one cast resin body completely embedding, holding and insulating the windings, the cast resin body having cooling channels formed therein and having additional channels formed therein being separated from the cooling channels, and insulating gas filling the additional channels.
    Type: Grant
    Filed: September 23, 1982
    Date of Patent: December 11, 1984
    Assignee: Transformatoren Union Aktiengesellschaft
    Inventor: Richard Pfeiffer
  • Patent number: 4349801
    Abstract: Single-phase transformer, including windings being wound around an axis and cast in resin forming a cast resin body, the cast resin winding body having an outer surface and a rectangular window formed therein with sides disposed in given planes, a wound core formed of tape material extended through the window, two flanges being cast with and integral with the cast resin winding body on opposite sides thereof and parallel to the winding axis and to the window, the flanges having outer edges, mutually parallel inner surfaces substantially disposed in the plane of the narrow sides of the window and grooves formed in the inner surfaces in the vicinity of and parallel to the outer edges, an encapsulation for the wound core being anchored in the grooves, and a grounded metallization layer formed on the outer surface of the cast resin winding body at least immediately adjacent to the wound core.
    Type: Grant
    Filed: September 18, 1980
    Date of Patent: September 14, 1982
    Assignee: Transformatoren Union AG
    Inventors: Garhard Altmann, Richard Pfeiffer
  • Patent number: D1024123
    Type: Grant
    Filed: June 15, 2022
    Date of Patent: April 23, 2024
    Assignee: Siemens Healthineers AG
    Inventors: Richard Max Bögel, Anja Pfeiffer, Linda Löser-beck, Julian Böhner, Sarah Donnelson, Hang Li, Michaela Rodenbücher, Melanie Hanke, Jaqueline Wassmansdorf Mattos