Patents by Inventor Steven James McMaster

Steven James McMaster 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).

  • Electronic car park management system
    Patent number: 6642854
    Abstract: An electronic system which facilitates active signs for car park management systems. There is a light sensitive sensor in each car space allowing a very simple circuit to distinguish whether a group of car spaces is full or has one or more vacant spaces available. There is not necessarily a need for a computer or even a microprocessor to ascertain the vacant or full state of a group of car spaces. This electronic system may directly switch devices accordingly.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: November 4, 2003
    Inventor: Steven James McMaster
  • Electronic car park management system
    Publication number: 20010052860
    Abstract: An electronic system which facilitates active signs for car park management systems. There is a light sensitive sensor in each car space allowing a very simple circuit to distinguish whether a group of car spaces is full or has one or more vacant spaces available. There is not necessarily a need for a computer or even a microprocessor to ascertain the vacant or full state of a group of car spaces. This electronic system may directly switch devices accordingly.
    Type: Application
    Filed: May 16, 2001
    Publication date: December 20, 2001
    Inventor: Steven James McMaster