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Daniel Duprez — 4 Patents

EUElf Union: 3 patents #2 of 20Top 10%
EFElf France: 1 patents #61 of 154Top 40%
Poitiers, FR: #44 of 327 inventorsTop 15%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Daniel Duprez has been granted 4 US patents while listed as an inventor at Elf Union. The first was granted in 1980 and the most recent in January 1982. Daniel Duprez ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Daniel Duprez in Poitiers, FR.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4311614 Catalysts for water dealkylation of aromatic hydrocarbons Michel Grand 1982-01-19
4268702 Catalytic conversion of aromatic fractions in the presence of steam Michel Grand 1981-05-19
4238368 Water dealkylation catalyst of aromatic hydrocarbons Michel Grand 1980-12-09
4233186 Catalysts for water dealkylation of aromatic hydrocarbons Michel Grand 1980-11-11

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