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

Nelson E. Prieto — 8 Patents

Shell Oil Compny: 7 patents #428 of 4,423Top 10%
PEPetroferm: 1 patents #8 of 18Top 45%
Richmond, TX: #100 of 594 inventorsTop 20%
Texas: #19,067 of 125,132 inventorsTop 20%
Overall (All Time): #600,572 of 4,157,543Top 15%
8 Patents All Time
Nelson E. Prieto has been granted 8 US patents while listed as an inventor at Shell Oil Compny. The first was granted in 1992 and the most recent in January 2003. Nelson E. Prieto ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Nelson E. Prieto in Richmond, TX, US.

Patents per Year

Patents granted per year, 1992 to 2003Bar chart with a peak of 3 patents in 1995.peak 31992: 1 patents19921995: 3 patents19951996: 1 patents19961997: 1 patents19971999: 1 patents19992003: 1 patents2003

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
6511546 Aqueous cleaning Elizabeth A. Bivins, Michael E. Hayes, Byron A. Starkweather 2003-01-28
5997763 Corrosion inhibiting antifreeze compositions containing various carboxylic acids Raul A. Pabon, Jr. 1999-12-07
H1680 Secondary alkyl sulfate-containing hard surface cleaning compositions 1997-09-02
H1559 Secondary alkyl sulfate-containing light duty liquid detergent JanElsa E. Carty, Ruth Javier Blanco, William W. Schmidt 1996-07-02
H1478 Secondary alkyl sulfate-containing liquid laundry detergent compositions 1995-09-05
H1467 Detergent formulations containing a surface active composition Kirk Herbert Raney, Werner Lilienthal 1995-08-01
5389277 Secondary alkyl sulfate-containing powdered laundry detergent compositions 1995-02-14
5145597 Cleaning composition and method of use Manual S. Rodriguez 1992-09-08