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USPTO Patent Rankings Data through Dec 31, 2025
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Gerald A. MacAlpine — 3 Patents

ExxonMobil: 3 patents #3,063 of 10,161Top 35%
Sarnia, CA: #100 of 327 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Gerald A. MacAlpine has been granted 3 US patents while listed as an inventor at ExxonMobil. The first was granted in 1983 and the most recent in July 1993. Gerald A. MacAlpine ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Gerald A. MacAlpine in Sarnia, ON, CA.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5225094 Lubricating oil having an average ring number of less than 1.5 per mole containing a succinic anhydride amine rust inhibitor Lilianna Z. Pillon, Andre E. Asselin 1993-07-06 $43,339,000
5149452 Wax isomerate having a reduced pour point Partick M. E. Halls, Andre E. Asselin 1992-09-22 $181,177,000
4367152 Selected heteroaromatic nitrogen compounds as antioxidant/metal deactivators/electrical insulators in lubricating oils and petroleum liquid fuels Peter G. Wright, John MacDonald 1983-01-04 $20,311,000