John E. Buffum — 2 Patents at Shell Oil Compny

John E. Buffum has been granted 2 US patents while listed as an inventor at Shell Oil Compny. The first was granted in 1992 and the most recent in January 1995. John E. Buffum ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list John E. Buffum in Houston, TX, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5380697	Ethylene oxide catalyst and process	Marek Matusz, Carolus Matthias Anna Maria Mesters	1995-01-10
5145824	Ethylene oxide catalyst	Ruth Mary Kowaleski, William H. Gerdes	1992-09-08

John E. Buffum — 2 Patents

Issued Patents All Time

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