Patents by Inventor Helmut Leier

Helmut Leier 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).

  • Amplitude and phase-controlled antennas-subsystem
    Patent number: 6876323
    Abstract: A radar system with a phase controlled antenna array that contains a number of data and supply networks (2), which are installed so that they are interchangeable, and a transmit/receive module (3) containing a transmitter and receiver circuit (4) as well as a number of circulator circuits (8) and a number of antenna elements (9) that are coupled via a circulator circuit (8) to the transmitter and receiver circuit (4). Transmitter and receiver circuits (4), circulator circuits (8), and antenna elements (9) are combined in each transmit/receive module (3) and the transmit/receive modules (3) are arranged interchangeably on the radiation side of the radar or EW system (1).
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: April 5, 2005
    Assignee: EADS Deutschland GmbH
    Inventors: Heinz-Peter Feldle, Helmut Leier, Wolfang Menzel, Marc Schreiner
  • Amplitude and phase-controlled antennas-subsystem
    Publication number: 20030218566
    Abstract: A radar system with a phase-controlled antenna array that contains a number of data and supply networks (2), which are installed so that they are interchangeable, and a sender/receiver module (3) containing a sender and receiver circuit (4) as well as a number of circulator circuits (8) and a number of antenna elements (9) that are coupled via a circulator circuit (8) to the sender and receiver circuit (4). Sender and receiver circuits (4), circulator circuits (8), and antenna elements (9) are combined in each sender/receiver module (3) and the sender/receiver modules (3) are arranged interchangeably on the radiation side of the radar system (1).
    Type: Application
    Filed: January 9, 2003
    Publication date: November 27, 2003
    Inventors: Heinz-Peter Feldle, Helmut Leier, Wolfang Menzel, Marc Schreiner
  • Method for producing a heterobiopolar transistor
    Patent number: 6365477
    Abstract: A method for producing a heterobipolar transistor, arranged on a substrate of semiconductor material on which is grown a semiconductor sequence for a collector, a base and an emitter, which method includes: etching the layer sequence to form a transistor with a mesa structure, carrying out a first planarizing step to the upper limit of the base during which the surface of the base is protected by a protecting portion of the emitter layer adjacent to the base; removing this protective layer; depositing a metal contact layer for the base; carrying out a second planarizing step for the base emitter mesa; and finally depositing a connecting metallization layer for the collector, base and emitter.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: April 2, 2002
    Assignee: DaimlerChrysler AG
    Inventors: Christoph Gässler, Helmut Leier, Hyunchol Shin