Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Gerald E. Carkin — 13 Patents

AAAluminum Company Of America: 5 patents #112 of 1,017Top 15%
ALAlcoa: 5 patents #84 of 632Top 15%
EAElkem As: 2 patents #14 of 96Top 15%
AUAlcoa Usa: 2 patents #25 of 71Top 40%
ALAlcon: 1 patents #518 of 866Top 60%
EAElkem Asa: 1 patents #22 of 72Top 35%
CUCarnegie Mellon University: 1 patents #637 of 1,507Top 45%
Lower Burrell, PA: #18 of 383 inventorsTop 5%
Pennsylvania: #6,020 of 74,527 inventorsTop 9%
Overall (All Time): #362,438 of 4,157,543Top 9%
13 Patents All Time
Gerald E. Carkin has been granted 13 US patents while listed as an inventor at Alcoa. The first was granted in 1988 and the most recent in August 2019. Gerald E. Carkin ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list Gerald E. Carkin in Lower Burrell, PA, US.

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10377677 Fertilizer compositions and methods of making and using the same Mark L. Weaver, Kyle Crum, Judodine Nichols, David Iwig, Steven Orkis +6 more 2019-08-13
9527779 Fertilizer compositions and methods of making and using the same Mark L. Weaver, Kyle Crum, Judodine Nichols, David Iwig, Steven Orkis +6 more 2016-12-27
9068246 Decarbonization process for carbothermically produced aluminum Marshall J. Bruno, David H. DeYoung, Ronald M. Dunlap 2015-06-30
8406268 Electrode holder assembly and furnace comprising same Jarie-Erland Herstad, Joseph A. Lepish 2013-03-26 $20,007,000
7854783 Carbothermic aluminum production apparatus, systems and methods Joseph A. Lepish 2010-12-21 $52,194,000
7704443 Carbothermic aluminum production apparatus, systems and methods Joseph A. Lepish 2010-04-27 $129,034,000
6849101 Method using selected carbons to react with Al2O and Al vapors in the carbothermic production of aluminum Richard J. Fruehan, Yun Li 2005-02-01 $132,529,000
6511590 Alumina distribution in electrolysis cells including inert anodes using bubble-driven bath circulation R. Lee Troup, Don R. Careatti 2003-01-28 $118,579,000
5669436 Method of continuously casting composite strip Kevin S. Papich, Ronald Bachowski, Stephen F. Baumann, Robert A. Cargnel, Donald J. Clements +11 more 1997-09-23 $74,126,000
5476725 Clad metallurgical products and methods of manufacture Kevin S. Papich, Ronald Bachowski, Stephen F. Baumann, Robert A. Cargnel, Donald J. Clements +11 more 1995-12-19 $21,974,000
5198200 Process for the recovery of values from secondary aluminum dross Daniel Yerushalmi, Donald L. Stewart, Jr., Jan H. L. van Linden 1993-03-30 $27,880,000
4830881 Method of making a container Aaron J. Becker, G. Edward Graddy, Jr., Stephen C. Libby, Jan H. L. van Linden 1989-05-16 $8,465,000
4772320 Metal recovery from dross Jan H. L. van Linden, David I. Yun 1988-09-20 $34,592,000