Patents by Inventor John A. McEwan

John A. McEwan 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).

  • Publication number: 20140072305
    Abstract: Gigabit Ethernet connectivity is realized using off-the-shelf GIGABIT INTERFACE CONVERTER transceivers, wave division multiplexer/demultiplexers, and a single optical fiber. Simultaneous and bi-directional optical communication over a single optical fiber connecting two or more nodes is achieved by using at least one GIGABIT INTERFACE CONVERTER transceiver having at least one optical signal output and an optical signal input that are of different wavelengths from each other.
    Type: Application
    Filed: November 15, 2013
    Publication date: March 13, 2014
    Applicant: Technology Advancement Group, Inc.
    Inventors: John A. McEwan, James S. McEwan
  • Patent number: 8600238
    Abstract: Gigabit Ethernet connectivity is realized using off-the-shelf GIGABIT INTERFACE CONVERTER transceivers, wave division multiplexer/demultiplexers, and a single optical fiber. Simultaneous and bi-directional optical communication over a single optical fiber connecting two or more nodes is achieved by using at least one GIGABIT INTERFACE CONVERTER transceiver having at least one optical signal output and an optical signal input that are of different wavelengths from each other.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: December 3, 2013
    Assignee: Technology Advancement Group, Inc.
    Inventors: John A. McEwan, James S. McEwan
  • Publication number: 20110200329
    Abstract: Gigabit Ethernet connectivity is realized using off-the-shelf GIGABIT INTERFACE CONVERTER transceivers, wave division multiplexer/demultiplexers, and a single optical fiber. Simultaneous and bi-directional optical communication over a single optical fiber connecting two or more nodes is achieved by using at least one GIGABIT INTERFACE CONVERTER transceiver having at least one optical signal output and an optical signal input that are of different wavelengths from each other.
    Type: Application
    Filed: October 18, 2010
    Publication date: August 18, 2011
    Applicant: TECHNOLOGY ADVANCEMENT GROUP, INC.
    Inventors: John A. McEwan, James S. McEwan
  • Publication number: 20040207511
    Abstract: A security system includes a first transceiver for transmitting a signal to a second transceiver when the first transceiver is proximate a protected device such as a door or an electronic device. When the signal is received and authenticated, and when a verification device is activated, security features related to the device are deactivated. The verification device is configured to be activated when a person takes natural actions to access the device to thereby obfuscate the verification process and to eliminate the need to train authorized users to use the system.
    Type: Application
    Filed: April 21, 2003
    Publication date: October 21, 2004
    Applicant: TECHNOLOGY ADVANCEMENT GROUP, INC.
    Inventor: John A. McEwan
  • Patent number: 6315655
    Abstract: A low profile computer case having two centrifugal blowers mounted in a partition therein. An intake port of a first blower faces a bottom panel of the case and an intake port of the second blower faces a top panel of the case. Standoff dimensions are defined between the respective intake ports and panels to permit operation of the blowers.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: November 13, 2001
    Assignee: Technology Advancement Group, Inc.
    Inventors: John A. McEwan, James Stewart McEwan
  • Patent number: 4192400
    Abstract: The invention is an anti-theft system for motor vehicles and incorporates an electronic key which by virtue of a pre-coded shift register contained therein, and with the aid of an electronic clock contained within the vehicle can deliver this code as a series of impulses through a single output line to a decoder which is housed together with a disenabling gate inside the distributor or the starter motor casing to prevent circumvention of the electronic disenabling system.
    Type: Grant
    Filed: February 9, 1978
    Date of Patent: March 11, 1980
    Inventor: John A. McEwan
  • Patent number: RE40630
    Abstract: A low profile computer case having two centrifugal blowers mounted in a partition therein. An intake port of a first blower faces a bottom panel of the case and an intake port of the second blower faces a top panel of the case. Standoff dimensions are defined between the respective intake ports and panels to permit operation of the blowers.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: January 27, 2009
    Assignee: Technology Advancement Group, Inc.
    Inventors: John A. McEwan, James Stewart McEwan