Patents by Inventor Roger Waser

Roger Waser 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).

  • Measuring system for investigating concentrated aerosol particles in the gas phase
    Patent number: 11293842
    Abstract: The present invention relates to a measuring system for investigating concentrated, larger aerosol particles of an aerosol in the gas phase, having a multi-stage aerosol particle concentrator and also a measuring chamber for analyzing the larger aerosol particles, with at least one measuring device for the qualitative and/or quantitative determination of the aerosol particles, in particular in real time. The aerosol particle concentrator separates a larger part of the aerosol with fine particles and concentrate the larger aerosol particles in the smaller part of the aerosol. The aerosol particle concentrator includes an aerosol suction pump generating a negative pressure in the virtual impactor stages and a circulating-flow channel in which a part of the separated aerosol with fine particles is returned in the circulating flow from the aerosol outlet to the aerosol inlet of the aerosol suction pump.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: April 5, 2022
    Assignee: SWISENS AG
    Inventors: David Roos Launchbury, Roger Waser, Erny Niederberger, Reto Abt, Philipp Burch
  • MEASURING SYSTEM FOR INVESTIGATING CONCENTRATED AEROSOL PARTICLES IN THE GAS PHASE
    Publication number: 20210341359
    Abstract: The present invention relates to a measuring system for investigating concentrated, larger aerosol particles of an aerosol in the gas phase, having a multi-stage aerosol particle concentrator and also a measuring chamber for analyzing the larger aerosol particles, with at least one measuring device for the qualitative and/or quantitative determination of the aerosol particles, in particular in real time. The aerosol particle concentrator separates a larger part of the aerosol with fine particles and concentrate the larger aerosol particles in the smaller part of the aerosol. The aerosol particle concentrator includes an aerosol suction pump generating a negative pressure in the virtual impactor stages and a circulating-flow channel in which a part of the separated aerosol with fine particles is returned in the circulating flow from the aerosol outlet to the aerosol inlet of the aerosol suction pump.
    Type: Application
    Filed: August 27, 2019
    Publication date: November 4, 2021
    Applicant: SWISENS AG
    Inventors: David ROOS LAUNCHBURY, Roger WASER, Erny NIEDERBERGER, Reto ABT, Philipp BURCH
  • Back-pressure safeguard
    Patent number: 9435110
    Abstract: The backflow prevention device consists of a funnel-shaped membrane and a clamping device for mounting in a pipe. The clamping device consists of a spread member expanding the membrane to the pipe cross section and pressing it against the pipe wall, and a support member supporting the spread member against the pipe wall.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: September 6, 2016
    Assignee: Lasso Technik AG
    Inventors: Daniel Rohrer, Roger Waser
  • BACK-PRESSURE SAFEGUARD
    Publication number: 20140290777
    Abstract: The backflow prevention device consists of a funnel-shaped membrane and a clamping device for mounting in a pipe. The clamping device consists of a spread member expanding the membrane to the pipe cross section and pressing it against the pipe wall, and a support member supporting the spread member against the pipe wall.
    Type: Application
    Filed: November 29, 2012
    Publication date: October 2, 2014
    Applicant: Lasso Technik AG
    Inventors: Daniel Rohrer, Roger Waser