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For the Inventor, By the Inventor

Middlesex, United Kingdom

Central Research Laboratories Limited


USPTO Granted Patents = 74

% Expired Patents = 10.8


Forward Citations = 1,227

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70 inventors (with patents filed for the assignee):

goldMedal Alastair Sibbald (11 out of 27 patents)

silverMedal Richard David Clemow (10 out of 26 patents)

bronzeMedal Ian Macdonald Green (9 out of 13 patents)

4.  John Robert Dodgson (7 out of 12 patents)

5.  Malcolm Trayton Austen (5 out of 7 patents)

6.  John Graham Holden (4 out of 5 patents)

7.  Martin Peter Todd (4 out of 4 patents)

8.  Anthony Robert Corless (4 out of 7 patents)

9.  Ian A Shanks (4 out of 32 patents)

10.  Paul W Surguy (4 out of 7 patents)

11.  Christoph Dobrusskin (3 out of 34 patents)

12.  Fawad Nackvi (3 out of 5 patents)

13.  Adam Rupert Philp (3 out of 3 patents)

14.  Monica Backes (3 out of 3 patents)

15.  Ian Robins (3 out of 3 patents)


Core Competencies:
Audio Signal Identification
Liquid Crystal Compositions
Gas Sensor
Stereo Sound Expander
Electrochemical Cell
Analytical Sampling Device
Plasma Processing Device
Optical Modulator
Ferroelectric LCD
Image Display Apparatus
Dioxane Derivatives
Master-Slave Manipulator

74 patents:

1. 6754633 - Encoding a code signal into an audio or video signal (2004-06-22),
2. 6680767 - Method of forming a liquid crystal polymer layer without support substrate (2004-01-20),
3. 6643375 - Method of processing a plural channel audio signal (2003-11-04),
4. 6635160 - Gas sensor (2003-10-21),
5. 6630919 - Optical modulator and integrated circuit therefor (2003-10-07),
6. 6614910 - Stereo sound expander (2003-09-02),
7. 6577736 - Method of synthesizing a three dimensional sound-field (2003-06-10),
8. 6564655 - Analytical sampling device (2003-05-20),
9. 6558519 - Gas sensors (2003-05-06),
10. 6545695 - Apparatus for locating a plurality of articles (2003-04-08),
11. 6523747 - Apparatus for reading permanently structured magnetic records (2003-02-25),
12. 6522472 - Apparatus for displaying a real image in space (2003-02-18),
13. 6498857 - Method of synthesizing an audio signal (2002-12-24),
14. 6467913 - Apparatus for displaying a suspended image (2002-10-22),
15. 6454923 - Gas sensor (2002-09-24),
Central Research Laboratories Limited, based in Middlesex, GB, specializes in advanced audio signal processing technologies. The company focuses on developing innovative solutions in audio signal identification and stereo sound expansion, enhancing the auditory experience across various applications. Additionally, it explores diverse technological domains, including liquid crystal compositions, gas sensors, electrochemical cells, and analytical sampling devices, contributing to advancements in both consumer electronics and industrial applications.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

74 Patents

#6 in Middlesex

#252 in United Kingdom

#10,119 in the World

Middlesex, GB
Middlesex, United Kingdom

Central Research Laboratories Limited

Forward Citations = 1,227

70 inventors:

goldMedal Alastair Sibbald (11 out of 27 patents)

silverMedal Richard David Clemow (10 out of 26 patents)

bronzeMedal Ian Macdonald Green (9 out of 13 patents)

4.  John Robert Dodgson (7 out of 12 patents)

5.  Malcolm Trayton Austen (5 out of 7 patents)

Please report any incorrect information to [email protected]
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