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

Y.-D. Mark Chen — 3 Patents

ETEthyl: 2 patents #215 of 494Top 45%
ALAlbemarle: 1 patents #228 of 439Top 55%
Baton Rouge, LA: #584 of 1,896 inventorsTop 35%
Louisiana: #2,243 of 10,876 inventorsTop 25%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Y.-D. Mark Chen has been granted 3 US patents while listed as an inventor at Ethyl. The first was granted in 1991 and the most recent in December 1997. Y.-D. Mark Chen ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Y.-D. Mark Chen in Baton Rouge, LA, US.

Patents per Year

Patents granted per year, 1991 to 1997Bar chart with a peak of 1 patents in 1991.peak 11991: 1 patents19911993: 1 patents19931997: 1 patents1997

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5693861 Process for preparing solid amine oxides Rebecca Smith, R. Woodrow Wilson, Jr., Mayur Shah, Kim R. Smith, Sharon B. McGee 1997-12-02 $3,569,000
5254735 Process for preparing solid amine oxides Kim R. Smith, Rebecca Smith, James E. Borland, Joe D. Sauer 1993-10-19 $1,728,000
5068430 Bleaching of colored amine oxides James E. Borland, Joe D. Sauer, Kim R. Smith, Rebecca Smith 1991-11-26 $4,531,000