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John Stephen — 2 Patents

Overall (All Time): #1,709,992 of 4,157,543Top 45%

2 Patents All Time

John Stephen has been granted 2 US patents. The first was granted in 1990 and the most recent in April 2025. John Stephen ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list John Stephen in Cheltenham, SC, GB.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
12285511	Perfume prolonger	Patricia Obwolo	2025-04-29
4947298	Bed lighting apparatus	—	1990-08-07

John Stephen — 2 Patents

Issued Patents All Time

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