Patents by Inventor William Walden

William Walden 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).

  • Publication number: 20220307708
    Abstract: An air purification device includes a housing configured to house a desiccant material filter and a fan coupled to the housing and configured to cause airflow to pass through the desiccant material filter. Moisture is to be collected from the airflow by the desiccant material filter. The moisture is to be removed from the desiccant material filter via one or more of heat or microwave energy.
    Type: Application
    Filed: March 14, 2022
    Publication date: September 29, 2022
    Inventors: Chang Yul Cha, Suk-Bae Cha, George Crandell, Craig Henricksen, William Walden
  • Publication number: 20220152540
    Abstract: A microwave enhanced air disinfection (MEAD) device includes a housing and a microwave generator coupled to the housing. The microwave generator is configured to generate microwave energy. The MEAD device further includes a multi-component filter disposed in the housing. The multi-component filter is configured to collect contaminants from airflow. At least a portion of the contaminants from the airflow is to be destroyed at least one of directly or indirectly via the microwave energy.
    Type: Application
    Filed: November 9, 2021
    Publication date: May 19, 2022
    Inventors: Chang Yul Cha, Suk-Bae Cha, George Crandell, Craig Henricksen, William Walden
  • Publication number: 20220152264
    Abstract: A method includes identifying a schedule to operate a microwave enhanced air disinfection (MEAD) system and causing, based on the schedule, intermittent generation of microwave energy by a microwave generator of the MEAD system. A multi-component filter disposed in a housing of the MEAD system is configured to collect contaminants from airflow through the housing. At least a portion of the contaminants from the airflow is to be destroyed at least one of directly or indirectly via the microwave energy.
    Type: Application
    Filed: November 9, 2021
    Publication date: May 19, 2022
    Inventors: Chang Yul Cha, Suk-Bae Cha, George Crandell, Craig Henricksen, William Walden
  • Publication number: 20060177392
    Abstract: An oil-based topical composition for use on the skin containing at least one compound from the class of retinoids, which are useful as medicinal agents, in an oleaginous solution composed substantially of non-ionic lipids, which are useful as vehicles for nonpolar compounds.
    Type: Application
    Filed: December 5, 2005
    Publication date: August 10, 2006
    Inventor: William Walden