Patents by Inventor Olaf Dannappel

Olaf Dannappel 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).

  • Array of ultrasound transducers
    Patent number: 6972510
    Abstract: The invention relates to an array of ultrasound transducers which each comprise a substrate (1), a membrane (2), a first electrode (4), a piezoelectric layer (5), and a second electrode (6), wherein the substrate (1) comprises at least one opening (3) which adjoins the membrane (2) at one side, while the piezoelectric layer (5) has a high piezoelectric coupling coefficient k and is textured. The invention further relates to an ultrasound transducer and to a method of manufacturing an array of ultrasound transducers.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: December 6, 2005
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventors: Mareike Klee, Tilman Schlenker, Olaf Dannappel, Hans-Peter Loebl, Georg Schmitz, John Fraser
  • Array of ultrasound transducers
    Publication number: 20030141783
    Abstract: The invention relates to an array of ultrasound transducers which each comprise a substrate (1), a membrane (2), a first electrode (4), a piezoelectric layer (5), and a second electrode (6), wherein the substrate (1) comprises at least one opening (3) which adjoins the membrane (2) at one side, while the piezoelectric layer (5) has a high piezoelectric coupling coefficient k and is textured. The invention further relates to an ultrasound transducer and to a method of manufacturing an array of ultrasound transducers.
    Type: Application
    Filed: November 27, 2002
    Publication date: July 31, 2003
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Mareike Klee, Tilman Schlenker, Olaf Dannappel, Hans-Peter Loebl, Georg Schmitz, John Fraser
  • Array of ultrasound transducers
    Patent number: 6515402
    Abstract: The invention relates to an array of ultrasound transducers which each comprise a substrate (1), a membrane (2), a first electrode (4), a piezoelectric layer (5), and a second electrode (6), wherein the substrate (1) comprises at least one opening (3) which adjoins the membrane (2) at one side, while the piezoelectric layer (5) has a high piezoelectric coupling coefficient k and is textured. The invention further relates to an ultrasound transducer and to a method of manufacturing an array of ultrasound transducers.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: February 4, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Mareike Klee, Tilman Schlenker, Olaf Dannappel, Hans-Peter Loebl, Georg Schmitz, John Fraser
  • Array of ultrasound transducers
    Publication number: 20020105250
    Abstract: The invention relates to an array of ultrasound transducers which each comprise a substrate (1), a membrane (2), a first electrode (4), a piezoelectric layer (5), and a second electrode (6), wherein the substrate (1) comprises at least one opening (3) which adjoins the membrane (2) at one side, while the piezoelectric layer (5) has a high piezoelectric coupling coefficient k and is textured. The invention further relates to an ultrasound transducer and to a method of manufacturing an array of ultrasound transducers.
    Type: Application
    Filed: January 24, 2001
    Publication date: August 8, 2002
    Applicant: U.S. PHILIPS CORPORATION
    Inventors: Mareike Klee, Tilman Schlenker, Olaf Dannappel, Hans-Peter Loebl, Georg Schmitz, John Fraser