Inventor
John C. Greenwood
Inventor
Harlow, GB
Overview
Patents· 23 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Lprimary
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure22%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
G01PMeasuring linear or angular speed, acceleration, deceleration, or shock9%
G01DMeasuring not specially adapted for a specific variable7%
H01HElectric switches7%
H10DInorganic electric semiconductor devices7%
G02BOptical elements, systems or apparatus4%
H03KPulse technique4%
H04LTransmission of digital information, e.g. telegraphic communication4%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h104%
PatentTitleYear
7,490,519'System and method for sensing differential pressure'20097,409,865'Diaphragm structure'20087,020,074'Synchronization method and apparatus for frequency division multiplexed telecommunication systems'20066,598,200'Method and apparatus for frequency domain data frame transmission'20036,584,864'Sensor'20034,942,766'Transducer'19904,884,450'Sensor device'19894,813,271'Resonator device'19894,691,117'Switch device'19874,660,418'Flexible hinge device'19874,655,091'Rotational movement'19874,636,829'Photodetector integrated circuit'19874,567,451'Resonator having optical feedback coupling'19864,503,715'Load sensors'19854,480,162'Electrical switch device with an integral semiconductor contact element'19844,305,298'Mechanical resonator arrangements'19814,293,373'Method of making transducer'19814,244,225'Mechanical resonator arrangements'19814,229,979'Transducer and method of making the same'19804,182,937'Mechanically biased semiconductor strain sensitive microphone'19804,131,985'Thin silicon devices'19794,121,884'Optical fiber switch'19784,116,531'Fiber optic switch arrangement'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1987Patents assigned to INT STANDARD ELECTRIC CORP (10)· patent assignee history
1978–1990Based in Harlow, GB· patent location history
1979–1987Patents assigned to ITT (5)· patent assignee history
1989–1990Patents assigned to STC PLC (3)· patent assignee history
2003–2006Patents assigned to NORTEL NETWORKS LTD (2)· patent assignee history
2003Based in Chippenham, GB· patent location history
2003Based in Loughborough, GB· patent location history
2006Based in Wiltshire, GB· patent location history
2008–2009Patents assigned to GEN ELECTRIC (2)· patent assignee history
2008–2009Based in Leicestershire, GB· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| INT STANDARD ELECTRIC CORP | 10 | 1978–1987 |
| ITT | 5 | 1979–1987 |
| STC PLC | 3 | 1989–1990 |
| GEN ELECTRIC | 2 | 2008–2009 |
| NORTEL NETWORKS LTD | 2 | 2003–2006 |
Locations
| Location | Patents | Span |
|---|---|---|
| Harlow, GB | 18 | 1978–1990 |
| Leicestershire, GB | 2 | 2008–2009 |
| Wiltshire, GB | 1 | 2006 |
| Chippenham, GB | 1 | 2003 |
| Loughborough, GB | 1 | 2003 |