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

Leonard Howell — 4 Patents

OLOlin: 3 patents #231 of 783Top 30%
Vernon, CT: #136 of 419 inventorsTop 35%
Connecticut: #10,205 of 34,797 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Leonard Howell has been granted 4 US patents while listed as an inventor at Olin. The first was granted in 2004 and the most recent in August 2024. Leonard Howell ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Leonard Howell in Vernon, CT, US.

Patents per Year

Patents granted per year, 2004 to 2024Bar chart with a peak of 2 patents in 2005.peak 22004: 1 patents20042005: 2 patents20052024: 1 patents2024

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12053452 Compositions comprising non-racemic mixtures of (R)- and (S)-3,4- methylenedioxymethamphetamine or (R) and (S) n-methyl-1,3- benzodioxolylbutanamine and uses thereof Nicholas Kadysh, Harpreet Kaur 2024-08-06
6852427 Chromium-free antitarnish adhesion promoting treatment composition Szuchain Chen 2005-02-08 $8,474,000
6837980 Bond enhancement antitarnish coatings Szuchain Chen 2005-01-04 $3,643,000
6797764 Water-based adhesive Efraim Sagiv, Gary L. Diehl, Julius C. Fister 2004-09-28 $8,030,000