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John E. Spencer

SB Shell Internationale Research Maatschappij B.V.: 1 patents #62 of 211Top 30%
SL Shell Research Limited: 1 patents #53 of 163Top 35%
📍 Sittingbourne, GB: #38 of 84 inventorsTop 50%
Overall (All Time): #2,311,215 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5139563 Herbicidal compounds David P. Astles, Andrew Flood, Alastair McArthur, Trevor William Newton, David C. Hunter 1992-08-18
5071468 Triazolopyrimidine herbicides David P. Astles, Andrew Flood 1991-12-10