Patents by Inventor Michael Collasius

Michael Collasius 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).

  • Patent number: 6959836
    Abstract: The invention relates to a dispensing device and a method for dispensing liquids, preferably reagents, in an essentially automated and finely dosed manner. The dispensing device comprises a first duct that is connected to a storage element for storing the liquid to be dispensed. In addition, a conveying element for conveying the liquid through the fist duct is provided, whereby the liquid has to be dispensed. Liquid is transported from the storage element and is conveyed into the first duct by the conveying element. Moreover, the dispensing device is provided with a closing device that is arranged downstream in the conveying direction of the liquid in relation to the conveying element and serves for quickly closing and quickly opening the first duct. The aim of the invention is to regulate the pressure of the liquid in the region between the conveying element and the closing device. A device for regulating the pressure of the liquid in this region is provided.
    Type: Grant
    Filed: February 19, 2001
    Date of Patent: November 1, 2005
    Assignee: Qiagen-GmbH
    Inventors: Michael Collasius, Konstantin Lutze, Pius Fink, Marco Di Berardino
  • Patent number: 6902680
    Abstract: A device for selectively filtering liquid samples in compartments comprising inlet and outlet openings of a carrier body under reduced pressure and vacuum drying of the sample liquid in the area of the outlet openings of the compartments. The device comprises a vacuum pump for producing two levels of subpressure, a suction conduit, and a chamber comprising an interior space limited walls by a top wall having an opening with an edge, a bottom wall, and lateral walls connecting the top and bottom walls. A lid or the carrier body with outlet openings directed towards the interior space of the chamber can be placed in a substantially gastight manner on the opening with an edge. One of the lateral walls is formed as an access wall which is opened and substantially gastightly sealed or introducing the carrier body into the interior space of the chamber.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: June 7, 2005
    Assignee: QIAGEN GmbH
    Inventors: Michael Collasius, Oliver-Guido Venschott
  • Patent number: 6652744
    Abstract: The invention relates to a device for processing, especially for filtering and removing, fluids and fluid remnants in a low-pressure chamber (1). The device comprises a vacuum pump (30) and a separator (16), whereby the low-pressure chamber is connected to the separator via a first line (10), and the low-pressure chamber is connected to the vacuum pump via a second line (20) so that the low-pressure chamber can be evacuated while bypassing the separator. The invention also relates to a low-pressure chamber for processing fluids which is equipped with a heating plate with holes for heating areas of the interior space of the low-pressure chamber.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: November 25, 2003
    Assignee: Qiagen GmbH
    Inventors: Konstantin Lutze, Michael Collasius, Ulf Friederichs
  • Publication number: 20030155371
    Abstract: The invention relates to a dispensing device and a method for dispensing liquids, preferably reagents, in an essentially automated and finely dosed manner. The dispensing device comprises a first duct that is connected to a storage element for storing the liquid to be dispensed. In addition, a conveying element for conveying the liquid through the fist duct is provided, whereby said liquid has to be dispensed. Liquid is sucked from the storage element and is conveyed into the first duct by means of the conveying element. Moreover, the dispensing device is provided with a closing device that is arranged downstream in the conveying direction of the liquid in relation to the conveying element and serves for quickly closing and quickly opening the first duct. The aim of the invention is to regulate the pressure of the liquid in the region between the conveying element and the closing device. A device for regulating the pressure of the liquid in said region is provided.
    Type: Application
    Filed: February 6, 2003
    Publication date: August 21, 2003
    Inventors: Michael Collasius, Konstantin Lutze, Pius Fink, Marco Di Berardino
  • Publication number: 20030146139
    Abstract: The invention relates to a device for processing, especially for filtering and removing, fluids and fluid remnants in a low-pressure chamber (1). Said device comprises a vacuum pump (30) and a separator (16), whereby the low-pressure chamber is connected to the separator via a first line (10), and the low-pressure chamber is connected to the vacuum pump via a second line (20) so that the low-pressure chamber can be evacuated while bypassing the separator. The invention also relates to a low-pressure chamber for processing fluids which is equipped with a heating plate with holes for heating areas of the interior space of the low-pressure chamber.
    Type: Application
    Filed: December 9, 2002
    Publication date: August 7, 2003
    Inventors: Konstantin Lutze, Michael Collasius, Ulf Friederichs
  • Publication number: 20020009746
    Abstract: A device for selectively filtering liquid samples in compartments comprising inlet and outlet openings of a carrier body under reduced pressure and vacuum drying of the sample liquid in the area of the outlet openings of the compartments. The device comprises a vacuum pump for producing two levels of subpressure, a suction conduit, and a chamber comprising an interior space limited walls by a top wall having an opening with an edge, a bottom wall, and lateral walls connecting the top and bottom walls. A lid or the carrier body with outlet openings directed towards the interior space of the chamber can be placed in a substantially gastight manner on the openings with an edge. One of the lateral walls is formed as an access wall which is opened and substantially gastightly sealed or introducing the carrier body into the interior space of the chamber.
    Type: Application
    Filed: September 27, 2001
    Publication date: January 24, 2002
    Applicant: Qiagen GmbH
    Inventors: Michael Collasius, Oliver-Guido Venschott
  • Patent number: 6315902
    Abstract: A device for selectively filtering liquid samples in compartments comprising inlet and outlet openings of a carrier body under reduced pressure and vacuum drying drops of the sample liquid in the area of the outlet openings of the compartments. The device comprises a vacuum pump for producing two levels of subpressure, a suction conduit, and a chamber comprising an interior space limited by a top wall having an opening with an edge, a bottom wall, and lateral walls connecting the top and bottom walls. A lid or the carrier body with outlet openings directed towards the interior space of the chamber can be placed in a substantially gastight manner on the opening with an edge. One of the lateral walls is formed as an access wall which is opened and substantially gastightly sealed for introducing the carrier body into the interior space of the chamber.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: November 13, 2001
    Assignee: Qiagen GmbH
    Inventors: Michael Collasius, Oliver-Guido Venschott