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USPTO Patent Rankings Data through Dec 31, 2025
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Robert E. Ernhoffer — 3 Patents

ExxonMobil: 3 patents #3,063 of 10,161Top 35%
Sewell, NJ: #53 of 171 inventorsTop 35%
New Jersey: #23,671 of 69,400 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Robert E. Ernhoffer has been granted 3 US patents while listed as an inventor at ExxonMobil. The first was granted in 1991 and the most recent in October 1993. Robert E. Ernhoffer ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Robert E. Ernhoffer in Sewell, NJ, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5252237 Complex alkoxy borates of alkylated phenols as lubricant stabilizers Harry J. Andress, Henry Ashjian, William F. Olszewski 1993-10-12 $129,039,000
5171861 Thiadiazole-aryl sulfonate reaction products as multifunctional additives and compositions containing same Arjun K. Goyal, Andrew G. Horodysky, Derek A. Law, Shi-Ming Wu 1992-12-15 $15,793,000
4985157 Mixed alkoxylated alcohol-hydroquinone/resorcinol borates-antioxidants Liehpao O. Farng, Andrew G. Horodysky, John A. Keller, Jr. 1991-01-15 $8,202,000