Patents by Inventor John Koshak

John Koshak 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).

  • Elevator recessed car top for refuge area
    Publication number: 20050224299
    Abstract: An elevator car with an extended refuge area is disclosed. The elevator car has a top surface with an opening, and a refuge area structure with a first hinge, a first panel, a second hinge, and a second panel. The first hinge is coupled to the right side of the opening. The right side of the first panel is connected to the first hinge. The left side of the first panel is coupled to the second hinge. The second panel has its right side coupled to the second hinge. The left side of the second panel rests on the left side of the opening in the top surface of the elevator car.
    Type: Application
    Filed: April 13, 2004
    Publication date: October 13, 2005
    Inventors: San Soemardjan, John Koshak