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USPTO Patent Rankings Data through Dec 31, 2025
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John Demarco — 3 Patents

FMFmc: 3 patents #430 of 1,735Top 25%
Langhorne, PA: #102 of 299 inventorsTop 35%
Pennsylvania: #23,787 of 74,527 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
John Demarco has been granted 3 US patents while listed as an inventor at Fmc. The first was granted in 1991 and the most recent in December 2012. John Demarco ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list John Demarco in Langhorne, PA, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8323718 Co-precipitated carrageenan/xanthan gum compositions and processes for their preparation Robert Kopesky, W. Preston Brawn, Christopher J. Sewall, James Lamkey 2012-12-04 $26,606,000
8192778 Co-precipitated carrageenan/xanthan gum compositions and processes for their preparation Robert Kopesky, W. Preston Brawn, Christopher J. Sewall, James Lamkey 2012-06-05 $14,539,000
5035871 Production of concentrated aqueous polyphosphate solutions Charles F. Sikorski 1991-07-30 $2,215,000