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Bob Scheffer — 3 Patents

Shell Oil Compny: 3 patents #1,070 of 4,423Top 25%
Amsterdam, NL: #704 of 2,851 inventorsTop 25%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Bob Scheffer has been granted 3 US patents while listed as an inventor at Shell Oil Compny. The first was granted in 1991 and the most recent in November 2002. Bob Scheffer ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Bob Scheffer in Amsterdam, NL.

Patents per Year

Patents granted per year, 1991 to 2002Bar chart with a peak of 1 patents in 1991.peak 11991: 1 patents19911996: 1 patents19962002: 1 patents2002

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6479557 Process for the preparation of hydrocarbons from carbon monoxide and hydrogen Jean-Paul Lange, Ian E. Maxwell 2002-11-12
5554307 Process for improving lubricating base oil quality Daniel Dagorn, Taous Grandvallet Mahtout, Pierre Grandvallet 1996-09-10
5073661 Process for the preparation of hydrocarbons Andras G. T. G. Kortbeek 1991-12-17

Frequent Collaborators

Daniel Dagorn1 shared
Pierre Grandvallet1 shared
Andras G. T. G. Kortbeek1 shared
Jean-Paul Lange1 shared
Taous Grandvallet Mahtout1 shared
Ian E. Maxwell1 shared

Nearby-Ranked Inventors

Daniel Silion3
Hangfeng Li3
Mark Vander Wal3
Chad M. Goltzman3
Sathish Kumar Thanganathan3
Debbie Maloyd3
Ethan Alexander Garrett3
Paul Sabatka3
Sergii Bomko3