Patents by Inventor Patrick Calvin Friesen

Patrick Calvin Friesen 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).

  • Whole plant gas exchange chamber using pressurization and ventilation of separated canopy and root zones
    Patent number: 10935534
    Abstract: A whole plant gas exchange apparatus employs a chamber having a first region for accommodating a growth medium and a root system of a whole plant, and a second region accommodating a canopy of the plant. The regions are separated by a barrier, except for an opening through which the stem of the plant is accommodated. An air source supplies incoming air to the second region through an intake. An air outlet conveys outgoing air from the second region to a gas sensor for analysis of the outgoing air after photosynthetic interaction with the plant canopy. A vent communicates the first region of the chamber to an ambient environment outside the chamber. A resulting pressurized state of the second region is used to exhaust air from the first region through the vent in order to isolate this exhausted air from the analyzed canopy air.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: March 2, 2021
    Assignee: BioChambers Incorporated
    Inventors: Robert Barry Pauls, Marc Albert Joseph Theroux, Patrick Calvin Friesen, Ronald Rowland Sugden, Bruce Kettner
  • Whole Plant Gas Exchange Chamber Using Pressurization and Ventilation of Separated Canopy and Root Zones
    Publication number: 20180113104
    Abstract: A whole plant gas exchange apparatus employs a chamber having a first region for accommodating a growth medium and a root system of a whole plant, and a second region accommodating a canopy of the plant. The regions are separated by a barrier, except for an opening through which the stem of the plant is accommodated. An air source supplies incoming air to the second region through an intake. An air outlet conveys outgoing air from the second region to a gas sensor for analysis of the outgoing air after photosynthetic interaction with the plant canopy. A vent communicates the first region of the chamber to an ambient environment outside the chamber. A resulting pressurized state of the second region is used to exhaust air from the first region through the vent in order to isolate this exhausted air from the analyzed canopy air.
    Type: Application
    Filed: October 3, 2017
    Publication date: April 26, 2018
    Inventors: Robert Barry Pauls, Marc Albert Joseph Theroux, Patrick Calvin Friesen, Ronald Rowland Sugden, Bruce Kettner