Inventor · disambiguated record
John Happel
Also filed as: HAPPEL JOHN
5 granted patents·251 citations·filing 1977–1993
85Inventor score
Top patents by PatentIndex Score
5 records- 0193US5434330AProcess and apparatus for separation of constituents of gases using gas hydratesFiled 1993·Granted Jul 18, 1995·90 cites·29 claims
- 0293US4491639AMethods of making high activity transition metal catalystsGAS RES INST·Filed 1982·Granted Jan 1, 1985·78 cites·14 claims
- 0389US4320030AProcess for making high activity transition metal catalystsGAS RES INST·Filed 1980·Granted Mar 16, 1982·34 cites·6 claims
- 0489US4151191ASulfur resistant molybdenum catalysts for methanationAMERICAN GAS ASS·Filed 1977·Granted Apr 24, 1979·29 cites·7 claims
- 0586US4260553AAlumina-containing methanation catalystsGAS RES INST·Filed 1979·Granted Apr 7, 1981·20 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →