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USPTO Patent Rankings Data through Dec 31, 2025
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John A. Schofield — 7 Patents

Shell Oil Compny: 6 patents #511 of 4,423Top 15%
BPBritish Nuclear Fuels Plc: 1 patents #120 of 398Top 35%
Ashford, GB: #42 of 513 inventorsTop 9%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
John A. Schofield has been granted 7 US patents while listed as an inventor at Shell Oil Compny. The first was granted in 1981 and the most recent in May 2003. John A. Schofield ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list John A. Schofield in Ashford, GB.

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6568215 Method and apparatus for melting a particulate material James M. Lucas 2003-05-27
4927759 New strains of Pseudomonas putida and their use Peter R. Betteridge, George Ryback, Philip J. Geary 1990-05-22
4889804 Biochemical preparation of alkene derivatives 1989-12-26
4877732 Biochemical process for the preparation of new organofluorine compounds 1989-10-31
4876200 New strains of pseudomonas putida Peter R. Betteridge, George Ryback, Philip J. Geary 1989-10-24
4863861 Biochemical process to produce catechol or 1,2-dihydroxycyclohexa-3,5-diene compound(s) 1989-09-05
4249015 Preparation of organic acids and/or esters John E. Hawes 1981-02-03 $23,958,000