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Ilford, United Kingdom

The Plessey Company Plc

USPTO Granted Patents = 36

Forward Citations = 823

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49 inventors (with patents filed for the assignee):

Alexander S Philip (9 out of 14 patents)

Geoffrey Chopping (8 out of 30 patents)

Thomas S Maddern (8 out of 24 patents)

4. Clive Trundle (6 out of 11 patents)

5. Stephen N Oliver (5 out of 6 patents)

6. Harry G Heller (3 out of 8 patents)

7. Jack Brettle (3 out of 9 patents)

8. John W Ansell (3 out of 3 patents)

9. Ian Bennion (2 out of 14 patents)

10. Ernest Culley (2 out of 2 patents)

11. Frederick H Rees (2 out of 4 patents)

12. Anthony E Shuttleworth (2 out of 3 patents)

13. Milan Z Maric (2 out of 2 patents)

14. Martin W Baskerville (2 out of 2 patents)

15. John Whittall (2 out of 2 patents)

36 patents: Sort by Forward Citations

1. 5130668 - Amplifier arrangement with time constant control (1992-07-14),

2. 4990287 - Optical devices utilizing photochromic compounds (1991-02-05),

3. 4984236 - Circuit arrangement for use in the time division multiplexed signalling (1991-01-08),

4. 4912700 - Telecommunications digital switch (1990-03-27),

5. 4905223 - Wideband/multislot switching arrangement (1990-02-27),

6. 4888603 - Light emitting diode array (1989-12-19),

7. 4864556 - Synchronization arrangements for a digital telecommunications exchange (1989-09-05),

8. 4861899 - Photochromic gamma butyrolactones (1989-08-29),

9. 4858223 - Security arrangement for a telecommunications exchange system (1989-08-15),

10. 4838634 - Organic optical waveguides and method of fabricating waveguide structures (1989-06-13),

11. 4826977 - Photochromic spiropyran compounds (1989-05-02),

12. 4818096 - Photoreactive lenses with adamantane spiro compounds (1989-04-04),

13. 4812171 - Irreversible photochromic markings (1989-03-14),

14. 4794644 - Method of secured communications in a telecommunications system (1988-12-27),

15. 4737449 - Photochromic 3-pyrryl fulgides and fulgimides (1988-04-12),

The Plessey Company Plc is a leading global provider of innovative semiconductor solutions. They design and manufacture advanced electronic components primarily for the consumer electronics, healthcare, and automotive industries. With a rich history dating back to 1917, Plessey is recognized for its expertise in high-performance semiconductors, lighting technologies, and sensing solutions. Their cutting-edge products enable customers worldwide to create more efficient and sustainable technologies. For more information, visit their official website.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

36 Patents

#2 in Ilford

#484 in United Kingdom

#18,176 in the World

Ilford, United Kingdom

The Plessey Company Plc

Forward Citations = 823

49 inventors:

Alexander S Philip (9 out of 14 patents)

Geoffrey Chopping (8 out of 30 patents)

Thomas S Maddern (8 out of 24 patents)

4. Clive Trundle (6 out of 11 patents)

5. Stephen N Oliver (5 out of 6 patents)

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