Inventor · disambiguated record
Hjalmar Fries
Also filed as: FRIES HJALMAR
8 granted patents·137 citations·filing 1974–1993
88Inventor score
Top patents by PatentIndex Score
8 records- 0191US3957633ASewage treatment method and apparatusITT·Filed 1974·Granted May 18, 1976·45 cites·3 claims
- 0283USD341608SSubmersible mixerFLYGT AB ITT·Filed 1992·Granted Nov 23, 1993·25 cites·1 claims
- 0375USD291911SSubmersible unit for mixing and aeration of industrial effluent or the likeITT·Filed 1984·Granted Sep 15, 1987·14 cites·1 claims
- 0454USD306033SSubmersible mixerFLYGT AB·Filed 1987·Granted Feb 13, 1990·8 cites·1 claims
- 0545US5237228ASubmersible machineFLYGT AB ITT·Filed 1991·Granted Aug 17, 1993·12 cites·3 claims
- 0643US4721392AMethod and a device for installation of a mixerFLYGT AB·Filed 1986·Granted Jan 26, 1988·16 cites·4 claims
- 0740US5477018AMoisture-detecting, switching device and a method of forming the sameFLYGT AB ITT·Filed 1993·Granted Dec 19, 1995·8 cites·10 claims
- 0838US4653977APump for mixing and pumping liquidsFLYGT AB·Filed 1985·Granted Mar 31, 1987·9 cites·7 claims
Join the waitlist — get patent alerts
Get an alert when Hjalmar Fries files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →