Assignee
HALL CO W E
US·8 granted patents·226 citations·filing 1975–1995
Top patents by PatentIndex Score
8 records- 0192US5096206APipe joint sealerHALL CO W E·Filed 1990·Granted Mar 17, 1992·100 cites·17 claims
- 0275US5316606AMethod of fabricating a metal pipe with an integrally formed linerHALL CO W E·Filed 1991·Granted May 31, 1994·35 cites·16 claims
- 0363US4149740APipe coupling deviceHALL CO W E·Filed 1976·Granted Apr 17, 1979·23 cites·9 claims
- 0462US4008592AMethod and apparatus for flanging a length of spirally wound corrugated pipeHALL CO W E·Filed 1975·Granted Feb 22, 1977·11 cites·26 claims
- 0556US5480505AMethod of fabricating a steel pipe with integrally formed linerHALL CO W E·Filed 1994·Granted Jan 2, 1996·24 cites·29 claims
- 0654US5454402AHydraulically efficient ribbed pipe having openingsHALL CO W E·Filed 1994·Granted Oct 3, 1995·21 cites·2 claims
- 0740US4079614AMethod and apparatus for flanging a length of spirally wound corrugated pipeHALL CO W E·Filed 1977·Granted Mar 21, 1978·4 cites·22 claims
- 0836US5607530APolymer diverter system for metal pipe having an integrally formed polymer linerHALL CO W E·Filed 1995·Granted Mar 4, 1997·8 cites·7 claims
Join the waitlist — get patent alerts
Get an alert when HALL CO W E 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 →