Individual holder
HERFELD FRIEDRICH W
DE·9 granted patents·148 citations·filing 1976–1988
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
9 records- 0171US4002325AApparatus for mixing powdery or granulated materialsHERFELD FRIEDRICH W·Filed 1976·Granted Jan 11, 1977·27 cites·14 claims
- 0269US4781468AMixing apparatusHERFELD FRIEDRICH W·Filed 1986·Granted Nov 1, 1988·35 cites·9 claims
- 0367US4372686ADouble-cone rotating mixerHERFELD FRIEDRICH W·Filed 1981·Granted Feb 8, 1983·26 cites·6 claims
- 0462US4671666AMixing deviceHERFELD FRIEDRICH W·Filed 1985·Granted Jun 9, 1987·27 cites·8 claims
- 0543US4918665AApparatus for mixing materialHERFELD FRIEDRICH W·Filed 1986·Granted Apr 17, 1990·12 cites·20 claims
- 0635US4325515AMixing apparatus and method for condensing, mixing and granulating thermoplastic materialsHERFELD FRIEDRICH W·Filed 1979·Granted Apr 20, 1982·6 cites·7 claims
- 0733US4159880ACirculation mixerHERFELD FRIEDRICH W·Filed 1978·Granted Jul 3, 1979·4 cites·8 claims
- 0832US4061275AContinuous mixing apparatus, especially cooling mixer and a method for producing granulated materialHERFELD FRIEDRICH W·Filed 1976·Granted Dec 6, 1977·4 cites·12 claims
- 0928US4930897AMixerHERFELD FRIEDRICH W·Filed 1988·Granted Jun 5, 1990·7 cites·17 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →