Patents by Inventor Andrea Lejewski

Andrea Lejewski 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).

  • Respirator valve
    Patent number: 11445771
    Abstract: A personal respiratory protection device comprising a main body (12) carrying an exhalation valve (28), the valve (28) having a grip region (29) which is grippable in use by the user, the grip region (29) being configured to indicate to the user that the valve (28) is to be gripped during opening, donning and doffing of the device.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: September 20, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Christopher P. Henderson, Reyad A. Abdulqader, James J. May, Mark A. J. Fernandes, Daniel P. Jenkins, Stuart J. King, Elliott J. Baxter, Mario-Alexander Lehmann, Andrea Lejewski
  • Respirator Valve
    Publication number: 20170340031
    Abstract: A personal respiratory protection device comprising a main body (12) carrying an exhalation valve (28), the valve (28) having a grip region (29) which is grippable in use by the user, the grip region (29) being configured to indicate to the user that the valve (28) is to be gripped during opening, donning and doffing of the device.
    Type: Application
    Filed: December 2, 2015
    Publication date: November 30, 2017
    Inventors: Christopher P. Henderson, Reyad A. Abdulqader, James J. May, Mark A. J. Fenandes, Daniel P. Jenkins, Stuart J. King, Elliott J. Baxter, Mario-Alexander Lehmann, Andrea Lejewski