Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
TM

Thomas C. Mackereth — 5 Patents

U.S. Philips: 5 patents #925 of 8,851Top 15%
Cambridge, GB: #1,021 of 4,587 inventorsTop 25%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Thomas C. Mackereth has been granted 5 US patents while listed as an inventor at U.S. Philips. The first was granted in 1984 and the most recent in November 1987. Thomas C. Mackereth ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Thomas C. Mackereth in Cambridge, GB.

Patents per Year

Patents granted per year, 1984 to 1987Bar chart with a peak of 2 patents in 1984.peak 21984: 2 patents19841986: 1 patents19861987: 2 patents1987

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4707742 Video signal processing arrangement Anthony J. Field, Atma Heerah 1987-11-17
4668989 Fading circuit for video signals 1987-05-26 $509,000
4574302 Television signal encoder 1986-03-04 $569,000
4473846 Clamping video signals 1984-09-25 $645,000
4427273 Film projection system Tadeusz Zebrowski 1984-01-24 $793,000