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Frederick L. Marsh — 3 Patents

GNGnb: 1 patents #7 of 15Top 50%
GTGnb Battery Technologies: 1 patents #9 of 19Top 50%
GOGould: 1 patents #131 of 364Top 40%
Fridley, MN: #96 of 315 inventorsTop 35%
Minnesota: #19,251 of 52,454 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Frederick L. Marsh has been granted 3 US patents while listed as an inventor at Gnb. The first was granted in 1982 and the most recent in October 1994. Frederick L. Marsh ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Frederick L. Marsh in Fridley, MN, US.

Patents per Year

Patents granted per year, 1982 to 1994Bar chart with a peak of 1 patents in 1982.peak 11982: 1 patents19821987: 1 patents19871994: 1 patents1994

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5352549 Lead oxide composition for use in lead-acid batteries Purushothama Rao 1994-10-04
4713304 Method of preparing lead-acid battery plates and lead-acid batteries containing plates so prepared Purushothama Rao 1987-12-15
4329408 Lead oxide composition for use in lead-acid batteries George W. Mao, Purushothama Rao, Francis M. Dunlevey 1982-05-11 $2,481,000

Frequent Collaborators

Purushothama Rao3 shared
George W. Mao1 shared
Francis M. Dunlevey1 shared

Nearby-Ranked Inventors

Daniel Silion3
Hangfeng Li3
Mark Vander Wal3
Chad M. Goltzman3
Sathish Kumar Thanganathan3
Debbie Maloyd3
Ethan Alexander Garrett3
Paul Sabatka3
Sergii Bomko3