D. Lamont Smith — 2 Patents at Ethyl

D. Lamont Smith has been granted 2 US patents while listed as an inventor at Ethyl. The first was granted in 1980 and the most recent in October 2025. D. Lamont Smith ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list D. Lamont Smith in Terre Haute, IN, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12453427	Therapeutic mattress	—	2025-10-28
4203715	Rotating joint for extrusion die	Garland E. Raley, C. W. Miller	1980-05-20	$1,398,000

D. Lamont Smith — 2 Patents

Issued Patents All Time

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