Patents by Inventor Michael Andrew Calvert

Michael Andrew Calvert 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).

  • Aspirating smoke detectors
    Patent number: 9576458
    Abstract: Improvements in and Relating to Aspirating Smoke Detectors Disclosed is an aspirating smoke detection system comprising: at least two different types of detector; and a processor operable to receive signals from the at least two different types of detector, and to determine an alarm status, wherein the alarm status is one of: an all clear status; a critical status; and a status intermediate between the all clear status and the critical status.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: February 21, 2017
    Assignee: PROTEC FIRE DETECTION PLC
    Inventor: Michael Andrew Calvert
  • IMPROVEMENTS IN AND RELATING TO ASPIRATING SMOKE DETECTORS
    Publication number: 20160086468
    Abstract: Improvements in and Relating to Aspirating Smoke Detectors Disclosed is an aspirating smoke detection system comprising: at least two different types of detector; and a processor operable to receive signals from the at least two different types of detector, and to determine an alarm status, wherein the alarm status is one of: an all clear status; a critical status; and a status intermediate between the all clear status and the critical status.
    Type: Application
    Filed: April 23, 2014
    Publication date: March 24, 2016
    Inventor: Michael Andrew Calvert