Assignee
GRUENZWEIG & HARTMANN
DE·8 granted patents·177 citations·filing 1988–1994
Top patents by PatentIndex Score
8 records- 0179US5036585AProcess for the manufacture of an exhaust silencerGRUENZWEIG & HARTMANN·Filed 1989·Granted Aug 6, 1991·59 cites·6 claims
- 0277US4961695AFacility for generating fibers, in particular mineral fibers, from a molten massGRUENZWEIG & HARTMANN·Filed 1989·Granted Oct 9, 1990·34 cites·16 claims
- 0355US4940478AMethod of melting raw materialsGRUENZWEIG & HARTMANN·Filed 1988·Granted Jul 10, 1990·18 cites·13 claims
- 0454US5093069AProcess and device for the production of mineral wool nonwoven fabrics especially from rock woolGRUENZWEIG & HARTMANN·Filed 1990·Granted Mar 3, 1992·26 cites·19 claims
- 0547US5246653AApparatus for the continuous production of mineral wool nonwovensGRUENZWEIG & HARTMANN·Filed 1992·Granted Sep 21, 1993·20 cites·10 claims
- 0641US5057173AProcess for the production of needle felt from rock woolGRUENZWEIG & HARTMANN·Filed 1989·Granted Oct 15, 1991·11 cites·13 claims
- 0732US5368623AProcess and apparatus for the continuous production of mineral wool nonwovensGRUENZWEIG & HARTMANN·Filed 1994·Granted Nov 29, 1994·6 cites·4 claims
- 0828US5296013AProcess and apparatus for the continuous production of mineral wool nonwovensGRUENZWEIG & HARTMANN·Filed 1992·Granted Mar 22, 1994·3 cites·6 claims
Join the waitlist — get patent alerts
Get an alert when GRUENZWEIG & HARTMANN files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →