Patents by Inventor Wilhelmus Jacobus Hoogerwerf

Wilhelmus Jacobus Hoogerwerf 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).

  • Gas chromatography with ambient pressure stability control
    Patent number: 8549894
    Abstract: In a gas chromatography apparatus, a carrier gas is flowed from a carrier gas supply toward an analytical column at a carrier gas pressure. A sample is added to the carrier gas to form a sample gas. The sample gas is flowed through the analytical column to a gas detector that includes a sample gas outlet communicating with a gas buffer vessel. The carrier gas pressure is controlled relative to a buffer pressure of the gas buffer vessel.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: October 8, 2013
    Assignee: Bruker Chemical Analysis BV
    Inventor: Wilhelmus Jacobus Hoogerwerf
  • Gas Chromatography With Ambient Pressure Stability Control
    Publication number: 20120125083
    Abstract: In a gas chromatography apparatus, a carrier gas is flowed from a carrier gas supply toward an analytical column at a carrier gas pressure. A sample is added to the carrier gas to form a sample gas. The sample gas is flowed through the analytical column to a gas detector that includes a sample gas outlet communicating with a gas buffer vessel. The carrier gas pressure is controlled relative to a buffer pressure of the gas buffer vessel.
    Type: Application
    Filed: November 23, 2010
    Publication date: May 24, 2012
    Applicant: BRUKER CHEMICAL ANALYSIS BV
    Inventor: Wilhelmus Jacobus Hoogerwerf