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USPTO Patent Rankings Data through Dec 31, 2025
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D. Emil Johnson — 6 Patents

ExxonMobil: 6 patents #1,830 of 10,161Top 20%
Canandaigua, NY: #29 of 186 inventorsTop 20%
New York: #23,374 of 115,490 inventorsTop 25%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
D. Emil Johnson has been granted 6 US patents while listed as an inventor at ExxonMobil. The first was granted in 1982 and the most recent in June 1989. D. Emil Johnson ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list D. Emil Johnson in Canandaigua, NY, US.

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4842788 Process of an apparatus for extruding a meltable composition 1989-06-27 $13,195,000
4832889 Vaulted screw/grooved barrel extrusion machine, method and system 1989-05-23 $8,168,000
4470938 Method and apparatus for extrusion of thermoplastic foam 1984-09-11 $11,650,000
4424287 Polymer foam process Charles M. Krutchen, G. Vincent Sharps, Jr. 1984-01-03 $9,818,000
4352893 Production of foamed polymer G. Vincent Sharps, Jr. 1982-10-05 $17,324,000
4344710 Polymer foam extrusion system Charles M. Krutchen, G. Vincent Sharps, Jr. 1982-08-17 $7,719,000