Patents by Inventor Douglas W. Voegeli

Douglas W. Voegeli 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).

  • Customizable spilt stem stethoscope and a method for providing same
    Patent number: 6691821
    Abstract: A stethoscope having a binaural and a chestpiece in acoustic communication with that binaural. The chestpiece has at least one microphone in acoustic communication with a hollow stem, with this stem having a slot. The binaural is on the type with a tubing assembly having two lumens, these lumens being separated by a wall. Upon assembly, the tubing assembly engages the stem with the wall disposed within the slot. A method of providing a custom stethoscope is also disclosed.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: February 17, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Craig D. Oster, Douglas W. Voegeli
  • Customizable split stem stethoscope and a method for providing same
    Publication number: 20030047376
    Abstract: A stethoscope having a binaural and a chestpiece in acoustic communication with that binaural. The chestpiece has at least one microphone in acoustic communication with a hollow stem, with this stem having a slot. The binaural is on the type with a tubing assembly having two lumens, these lumens being separated by a wall. Upon assembly, the tubing assembly engages the stem with the wall disposed within the slot. A method of providing a custom stethoscope is also disclosed.
    Type: Application
    Filed: September 7, 2001
    Publication date: March 13, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Craig D. Oster, Douglas W. Voegeli
  • Process for producing a porous matrix
    Patent number: 4115500
    Abstract: A method of adhering resin coated spherical particles of substantially uniform size together in the presence of an inert lubricant and under pressure at their points of contact to produce a porous matrix having numerous interconnecting passageways useful in making a body for a sparger for producing bubbles of uniform size in liquids.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: September 19, 1978
    Assignee: Minnesota Mining & Manufacturing Company
    Inventor: Douglas W. Voegeli
  • Sparger
    Patent number: 3978176
    Abstract: A sparger useful for producing bubbles of uniform size in liquids is formed from a body comprised of a cured, thermosetting resin matrix enclosing spherical particles of substantially uniform size and containing numerous interconnecting passageways formed by the interstices between said enclosed particles.
    Type: Grant
    Filed: January 7, 1975
    Date of Patent: August 31, 1976
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Douglas W. Voegeli
  • Bicycle rack
    Patent number: D263945
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: April 20, 1982
    Assignee: Thermograte, Inc.
    Inventor: Douglas W. Voegeli
  • Stethoscope chestpiece
    Patent number: D487928
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: March 30, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Thomas E. Drummond, Douglas W. Voegeli