Patents by Inventor Mats Ulrik Sernfält

Mats Ulrik Sernfält 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).

  • Heating for powered air unit
    Patent number: 11185722
    Abstract: A powered air purifying respirator (PAPR) with an active heating system. The PAPR includes a powered air component designed to be carried by a user of the PAPR, the powered air component including a fan and a filter, wherein the fan draws air from a user's environment through the filter. The PAPR further includes an electronically controlled active heating element and a control system. The control system varies the power provided to the heating element and further disables the heating element when potential overheating of the heating element is detected. The present invention further includes a heating module for use with a PAPR. The heating module includes an electronically controlled active heating element. The heating element is disabled when the fan in the PAPR is not rotating.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: November 30, 2021
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Mats Ulrik Sernfält, Fredrik A. Nisser, Michal S. Szulmanowicz
  • Heating for powered air unit
    Patent number: 10994158
    Abstract: A powered air purifying respirator (PAPR) with an active heating system. The PAPR includes a powered air component designed to be carried by a user of the PAPR, the powered air component including a fan and a filter, wherein the fan draws air from a user's environment through the filter. The PAPR further includes an electronically controlled active heating element and a control system. The control system varies the power provided to the heating element and further disables the heating element when potential overheating of the heating element is detected. The present invention further includes a heating module for use with a PAPR. The heating module includes an electronically controlled active heating element. The heating element is disabled when the fan in the PAPR is not rotating.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: May 4, 2021
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Mats Ulrik Sernfält, Fredrik A. Nisser, Michal S. Szulmanowicz
  • HEATING FOR POWERED AIR UNIT
    Publication number: 20150114389
    Abstract: A powered air purifying respirator (PAPR) with an active heating system. The PAPR includes a powered air component designed to be carried by a user of the PAPR, the powered air component including a fan and a filter, wherein the fan draws air from a user's environment through the filter. The PAPR further includes an electronically controlled active heating element and a control system. The control system varies the power provided to the heating element and further disables the heating element when potential overheating of the heating element is detected. The present invention further includes a heating module for use with a PAPR. The heating module includes an electronically controlled active heating element. The heating element is disabled when the fan in the PAPR is not rotating.
    Type: Application
    Filed: October 24, 2013
    Publication date: April 30, 2015
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Mats Ulrik Sernfält, Fredrik Nisser