Inventor · disambiguated record
Helmut Scharf
Also filed as: FRANZ GERHARD · SCHARF HELMUT
8 granted patents·31 citations·filing 1976–1990
84Inventor score
Files withHUELS CHEMISCHE WERKE AG8
Top patents by PatentIndex Score
8 records- 0157US4200589AProcess for preparing acetone from isobutyraldehydeHUELS CHEMISCHE WERKE AG·Filed 1978·Granted Apr 29, 1980·5 cites·8 claims
- 0256US4867763AProcess and equipment for the fractional desublimation of solids in vapor form from gas/vapor mixturesHUELS CHEMISCHE WERKE AG·Filed 1988·Granted Sep 19, 1989·6 cites·19 claims
- 0352US4250119AProcess for the production of acetone from isobutyraldehydeHUELS CHEMISCHE WERKE AG·Filed 1978·Granted Feb 10, 1981·3 cites·13 claims
- 0444US4598157AMethod for the manufacture of pyromellitic acid dianhydrideHUELS CHEMISCHE WERKE AG·Filed 1985·Granted Jul 1, 1986·3 cites·8 claims
- 0542US4681046AMethod of utilizing distillation residues of phthalic acid anhydride or maleic acid anhydrideHUELS CHEMISCHE WERKE AG·Filed 1986·Granted Jul 21, 1987·3 cites·11 claims
- 0633US4773923AProcess and apparatus for fractional desublimation of vapor-phase solids from gas-vapor mixturesHUELS CHEMISCHE WERKE AG·Filed 1987·Granted Sep 27, 1988·6 cites·25 claims
- 0730US4085240AProcess for improving the adhesion of coatings of vulcanized EPDM articlesHUELS CHEMISCHE WERKE AG·Filed 1976·Granted Apr 18, 1978·3 cites·8 claims
- 0827US5009878AZirconium dioxide powder, processes for its preparation and its use for the production of sintered articlesHUELS CHEMISCHE WERKE AG·Filed 1990·Granted Apr 23, 1991·2 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →