Patents by Inventor Helmut Graf

Helmut Graf 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 producing a carrier element for semiconductor chips
    Patent number: 6088901
    Abstract: A carrier element for a semiconductor chip, in particular to be built into smart cards. The carrier element has a substrate that carries the chip and a stiffening sheet which also carries the chip and has a recess for receiving the chip and its connection leads therein. An edge of the recess is provided with a frame formed integrally from the sheet.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: July 18, 2000
    Assignee: Siemens Aktiengesellschaft
    Inventors: Michael Huber, Peter Stampka, Detlef Houdeau, Jurgen Fischer, Josef Heitzer, Helmut Graf
  • Reinforced concrete containing coated steel reinforcing member
    Patent number: 5100738
    Abstract: The reinforcing steel has a protective coating formed from a first layer of synthetic material and a second layer of aluminum or aluminum alloy between the first layer and the outer surface of the reinforcing steel.
    Type: Grant
    Filed: July 12, 1990
    Date of Patent: March 31, 1992
    Assignee: Rebar Couplerbox, Inc.
    Inventor: Helmut Graf
  • Direction-determining system
    Patent number: 4719469
    Abstract: A direction determining system having a Global Positioning System (GPS) receiver, a linear antenna array and a fast switching facility, the linear antenna array comprised of at least two antenna elements and the GPS receiver including two Costas Loops. The fast switching facility permits an input signal received by the two antenna elements to be processed and alternately supplied to the Costas Loops in synchronism for measuring the phases of the input signals received nearly simultaneously. The phase difference between the output signals of the two Costas Loops is measured in a phase meter and the pointing angle of the linear antenna array relative to the direction of a GPS satellite is determined by interferometry.
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: January 12, 1988
    Assignee: Standard Elektrik Lorenz AG
    Inventors: Wolfgang Beier, Helmut Graf
  • Rotation rate measuring instrument
    Patent number: 4704032
    Abstract: A rotation rate measuring instrument is disclosed in which two light beams propagate through a coiled optical fiber in opposite directions. After passing through the optical fiber, the two light beams are combined and directed onto a photodetector. One of the light beams is phase-modulated in a phase-modulator before entering the optical fiber. The modulation frequency is f.sub.m. The output signal of the photodetector is fed to a variable-gain amplifier whose output signal is separated into a signal of frequency f.sub.m and a signal of frequency 2f.sub.m. The rotation rate is derived from the signal of frequency f.sub.m. The signal of frequency 2f.sub.m is applied to a detector whose output is fed to an operational amplifier. The other signal applied to the operational amplifier is a reference signal of amplitude U.sub.R. The operational amplifier controls the gain of the variable-gain amplifier in such a way that the output signal of the detector has the same amplitude as the reference signal U.sub.R.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: November 3, 1987
    Assignee: Standard Elektrik Lorenz Aktiengesellschaft
    Inventors: Wilfried Auch, Helmut Graf, Eberhard Schlemper