David W. Smith — 3 Patents at Ethyl

David W. Smith has been granted 3 US patents while listed as an inventor at Ethyl. The first was granted in 1996 and the most recent in October 1999. David W. Smith ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list David W. Smith in Richmond, VA, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
5972851	Automatic transmission fluids having enhanced performance capabilities	Sanjay Srinivasan, John P. Sunne	1999-10-26	$4,562,000
5891786	Substantially metal free synthetic power transmission fluids having enhanced performance capabilities	Sanjay Srinivasan	1999-04-06	$2,408,000
5578236	Power transmission fluids having enhanced performance capabilities	Sanjay Srinivasan	1996-11-26	$7,712,000

David W. Smith — 3 Patents

Issued Patents All Time

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