Inventor · disambiguated record
James R. Ryffel
Also filed as: RYFFEL JAMES R
3 granted patents·24 citations·filing 1978–1988
68Inventor score
Top patents by PatentIndex Score
3 records- 0155US4173586AProcess for cleavage of unsaturated multi-cyclic ketonesBADISCHE·Filed 1978·Granted Nov 6, 1979·5 cites·5 claims
- 0254US4362682AChip-free staple fiber processBADISCHE CORP·Filed 1980·Granted Dec 7, 1982·11 cites·7 claims
- 0339US4891420AContinuous process for the hydrolytic production of polycaprolactam by tempering unextracted granular polymer material with moist inert gasBASF AG·Filed 1988·Granted Jan 2, 1990·8 cites·11 claims
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