Patents by Inventor Josef Backes

Josef Backes 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 and apparatus for parallel dispensing of defined volumes of solid particles
    Patent number: 7159740
    Abstract: A sample preparation system provides an automated process that dispenses appropriate amounts of solid material into wells of a microtiter plate for mixing into a suspension. The system utilizes an array of hollow tubes that are lowered into a particle reservoir such that particle material is forced up into the tubes. During loading, solid plungers in the tubes are positioned a known distance from the open end of the tubes. When the particle material is to be dispensed, the plungers are lowered to push the particle material out of the tubes and into receiving wells of the microtiter plate. The plunger stroke and internal diameter of the tubes defines the dispensed volume of particle material.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: January 9, 2007
    Assignee: Sequenom, Inc.
    Inventors: Elizabeth Nanthakumar, Josef Backes, Siegfried Unger
  • Method and apparatus for parallel dispensing of defined volumes of solid particles
    Publication number: 20030124735
    Abstract: A sample preparation system provides an automated process that dispenses appropriate amounts of solid material into wells of a microtiter plate for mixing into a suspension. The system utilizes an array of hollow tubes that are lowered into a particle reservoir such that particle material is forced up into the tubes. During loading, solid plungers in the tubes are positioned a known distance from the open end of the tubes. When the particle material is to be dispensed, the plungers are lowered to push the particle material out of the tubes and into receiving wells of the microtiter plate. The plunger stroke and internal diameter of the tubes defines the dispensed volume of particle material.
    Type: Application
    Filed: October 25, 2002
    Publication date: July 3, 2003
    Applicant: Sequenom, Inc.
    Inventors: Elizabeth Nanthakumar, Josef Backes, Siegfried Unger
  • Process for preparing 1-substituted 2-methyl-tetrahydropyrimidines
    Patent number: 4001232
    Abstract: 1-SUBSTITUTED 2-METHYL-TETRAHYDROPYRIMIDINES ARE PREPARED BY REACTING AN N-substituted propylene diamine with an acetoacetic acid ester or amine at a temperature of from 0.degree. to 80.degree. C and removing the water produced in the reaction at a temperature of from 0.degree. to 80.degree. C.
    Type: Grant
    Filed: July 22, 1975
    Date of Patent: January 4, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerhard Groegler, Gerhard Dankert, Klaus Recker, Josef Backes