Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Phillip R. DeVrou — 3 Patents

ALAlbemarle: 2 patents #165 of 439Top 40%
ETEthyl: 1 patents #298 of 494Top 65%
De Queen, AR: #10 of 57 inventorsTop 20%
Arkansas: #1,291 of 5,804 inventorsTop 25%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Phillip R. DeVrou has been granted 3 US patents while listed as an inventor at Albemarle. The first was granted in 1994 and the most recent in September 2002. Phillip R. DeVrou ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Phillip R. DeVrou in De Queen, AR, US.

Patents per Year

Patents granted per year, 1994 to 2002Bar chart with a peak of 1 patents in 1994.peak 11994: 1 patents19941997: 1 patents19972002: 1 patents2002

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6455739 Production of 4-fluorobenzaldehyde Steven G. Karseboom, Michael J. Turpie, John F. Balhoff 2002-09-24 $3,364,000
5672749 Process for preparing acetyl chloride W. Bryan Waites, Robert Erik Young 1997-09-30 $10,795,000
5324874 Process for a decarbromodiphenylethane predominate product having enhanced whiteness George H. Ransford, John C. Parks 1994-06-28 $8,985,000