1
John Christopher Greenwood, David Carotti: Method and apparatus for frequency domain data frame transmission. Nortel Networks, Barnes & Thornburg, July 22, 2003: US06598200 (48 worldwide citation)

Within a transmission channel in a frequency domain transmission medium, a plurality of non-contiguous channel portions are selected for data transmission. The selected channel portions are separated in frequency by unused channel portions. A transmitter generates a data frame of predetermined lengt ...


2
John Christopher Greenwood: Optical fiber switch. International Standard Electric Corporation, John T O Halloran, Peter C Van Der Sluys, October 24, 1978: US04121884 (36 worldwide citation)

An optical fiber switching arrangement contains a parallel-sided cell arranged within an optical fiber at an angle to the fiber axis. The arrangement includes means for introducing either a liquid or a vapor into the path of light passing through the cell. The cell is completely transparent to light ...


3
Kanakasabapathi Subramanian, Kuna Venkat Satya Rama Kishore, Parag Thakre, Russell William Craddock, Peter Ken Kinnell, John Christopher Greenwood: System and method for sensing differential pressure. General Electric Company, Patrick K Patnode, February 17, 2009: US07490519 (24 worldwide citation)

A differential pressure sensing system is provided. The sensing system includes a membrane layer having a channel extending diametrically therein, and including one or more cavities provided radially outbound of the channel and at least one resonant beam disposed in the channel and configured to osc ...


4
Robin Paul Rickard, John Christopher Greenwood, Philip Athelstan Wainman: Synchronization method and apparatus for frequency division multiplexed telecommunication systems. Nortel Networks, Barnes & Thornburg, March 28, 2006: US07020074 (9 worldwide citation)

In a frequency division multiplexed (FDM) telecommunications system, data is encoded on carriers stepped in frequency within each of a sequence of symbols. The carriers may be arranged in groups between which there are frequency bands in which interference may be expected. The symbols are of predete ...


5
John Christopher Greenwood: Sensor. Druck, Young & Basile P C, July 1, 2003: US06584864 (9 worldwide citation)

A resonant sensor comprises a support structure comprising two support points; a laminar resonator suspended between said two support points of said support structure and comprising a plurality of substantially parallel flexural members which are responsive to relative movement of said support point ...


6
John Christopher Greenwood: Diaphragm structure. General Electric Company, GE Global Patent Operation, August 12, 2008: US07409865 (1 worldwide citation)

A diaphragm structure with a first substrate including a first surface with an annular groove therein and a second opposing surface with an annular groove on each side of annular groove in the first surface defining a first diaphragm. A second substrate also includes a first surface with an annular ...


7
John Christopher GREENWOOD: Diaphragm structure. General Electric Co, Global Patent Operation, May 24, 2007: US20070113662-A1

A diaphragm structure with a first substrate including a first surface with an annular groove therein and a second opposing surface with an annular groove on each side of annular groove in the first surface defining a first diaphragm. A second substrate also includes a first surface with an annular ...


8
Kanakasabapathi Subramanian, Kuna Venkat Satya Rama Kishore, Parag Thakre, Russell William Craddock, Peter Ken Kinnell, John Christopher Greenwood: System and method for sensing differential pressure. General Electric Company, C O Fletcher Yoder, April 5, 2007: US20070074578-A1

A differential pressure sensing system is provided. The sensing system includes a membrane layer having a channel extending diametrically therein, and including one or more cavities provided radially outbound of the channel and at least one resonant beam disposed in the channel and configured to osc ...


9
John Christopher Greenwood: Sensor. Young & Basile PC, January 9, 2003: US20030005768-A1

A resonant sensor comprises a support structure comprising two support points; a laminar resonator suspended between said two support points of said support structure and comprising a plurality of substantially parallel flexural members which are responsive to relative movement of said support point ...