Assignee
SPIREX CORP
US·15 granted patents·463 citations·filing 1986–2000
Top patents by PatentIndex Score
15 records- 0186US5188399APipe coupling device and methodSPIREX CORP·Filed 1990·Granted Feb 23, 1993·59 cites·9 claims
- 0284US4944906AMethods of injection molding and extruding wet hygroscopic ionomersSPIREX CORP·Filed 1988·Granted Jul 31, 1990·50 cites·20 claims
- 0383US5816698AScrew and plasticating apparatus and methodSPIREX CORP·Filed 1996·Granted Oct 6, 1998·51 cites·14 claims
- 0482US5164207APlastic extruder with automatic shut-off valveSPIREX CORP·Filed 1991·Granted Nov 17, 1992·50 cites·5 claims
- 0581US4752136AExtruder injection apparatus and methodSPIREX CORP·Filed 1986·Granted Jun 21, 1988·46 cites·15 claims
- 0673US6585001B2Flow through ring valve for plastic extruding systemsSPIREX CORP·Filed 2000·Granted Jul 1, 2003·15 cites·7 claims
- 0772US5096302APlastic feeding device and methodSPIREX CORP·Filed 1991·Granted Mar 17, 1992·37 cites·17 claims
- 0871US5071256AExtruder injection apparatus and methodSPIREX CORP·Filed 1990·Granted Dec 10, 1991·32 cites·16 claims
- 0967US5798077AScrew for plasticating apparatus and method of useSPIREX CORP·Filed 1996·Granted Aug 25, 1998·30 cites·17 claims
- 1067US5439633APlastic extruder having a mixing valve with automatic shut-offSPIREX CORP·Filed 1994·Granted Aug 8, 1995·32 cites·8 claims
- 1166US5318357AExtruder injection apparatusSPIREX CORP·Filed 1992·Granted Jun 7, 1994·28 cites·17 claims
- 1249US5018917AApparatus for grooving the barrel of a plasticating machineSPIREX CORP·Filed 1990·Granted May 28, 1991·12 cites·5 claims
- 1346US5931578AExtruder and extrusion screw thereforSPIREX CORP·Filed 1998·Granted Aug 3, 1999·10 cites·12 claims
- 1442US4953279AMethod and apparatus for grooving the barrel of a plasticating machineSPIREX CORP·Filed 1989·Granted Sep 4, 1990·8 cites·6 claims
- 1532US5823668AExtruder and extrusion screw thereforSPIREX CORP·Filed 1997·Granted Oct 20, 1998·3 cites·6 claims
Join the waitlist — get patent alerts
Get an alert when SPIREX CORP 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 →