John L. Fitzjohn — 1 Patent at Conoco

John L. Fitzjohn — 1 Patent

COConoco: 1 patents #310 of 638Top 50%

EAE.I. Du Pont De Nemours And: 1 patents #7,390 of 12,129Top 65%

Wilmington, DE: #2,058 of 3,182 inventorsTop 65%

Delaware: #4,456 of 7,163 inventorsTop 65%

Overall (All Time): #2,406,284 of 4,157,543Top 60%

John L. Fitzjohn has been granted 1 US patent while listed as an inventor at Conoco. All of these patents were granted in 1988. John L. Fitzjohn ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list John L. Fitzjohn in Wilmington, DE, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
4732213	Colloidal silica-based fluid diversion	Karl E. Bennett, Richard A. Harmon, Paul C. Yates	1988-03-22	$15,284,000

John L. Fitzjohn — 1 Patent

Issued Patents All Time

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