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John D. Speake — 4 Patents

U.S. Philips: 4 patents #1,253 of 8,851Top 15%

Cambridge, GB: #1,207 of 4,587 inventorsTop 30%

Overall (All Time): #1,080,739 of 4,157,543Top 30%

4 Patents All Time

John D. Speake has been granted 4 US patents while listed as an inventor at U.S. Philips. The first was granted in 1989 and the most recent in August 2001. John D. Speake ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list John D. Speake in Cambridge, GB.

Patents per Year

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date
6272330	Radio receiver and gain controlled amplifier therefor	—	2001-08-07
5953643	Receiver circuit	Anthony Richards	1999-09-14
5028894	Bandpass filter circuit arrangement	—	1991-07-02
4839617	Bandpass filter circuit arrangement	—	1989-06-13

John D. Speake — 4 Patents

Patents per Year

Issued Patents All Time

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