Patent US3387071A successfully refreshed from Google Patents.
US3387071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibers
Assignee: Globe Manufacturing Co
•
Filing: 1964-05-05
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Granted: 1968-06-04
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Expires: 1984-05-05
Abstract
No abstract record available.
Inventors
- 👤 John W Cahill
- 👤 James L Powell
- 👤 Edward A Gartner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:47
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/58; D01F6/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A PROCESS OF PREPARING AN ELASTIC THREAD COMPRISING THE STEPS OF PROVIDING A LIQUID POLYURETHANE PREPOLYMER SELECTED FROM THE GROUP CONSISTING OF POLYESTERS AND POLYETHERS HAVING TERMINAL GROUPS SELECTED FROM THE GROUP CONSISTING OF ORGANIC ISOCYANATE GROUPS AND CHLOROFORMATE GROUPS SAID PREPOLYMER HAVING BEEN PREPARED FROM A MEMBER OF THE GROUP CONSISTING OF POLYESTERS AND POLYETHERS HAVING A FUNCTIONALLY OF ABOVE 2.1, EXTRUDING SAID LIQUID PREPOLYMER INTO AN ORGANIC SOLVENT SOLUTION OF UP TO 10 NORMAL OF A POLYAMINE SELECTED FROM THE GROUP CONSISTING OF PRIMARY AND SECONDARY ALIPHATIC AND HETEROCYCLIC AMINES AND THERBY FORMING A FILAMENT IN SAID SOLVENT SOLUTION, SAID ORGANIC SOLVENT BEING THE SOLE SOLVENT, AND THEREAFTER, REMOVING THE SOLVENT AND EXCESS POLYAMINE AND CURING THE THREAD IN HOT AIR.
Claim 2
Dependent Claim
123 words
A PROCESS OF PREPARING AN ELASTIC THREAD COMPRISING THE STEPS OF PROVIDING A LIQUID POLYURETHANE PREPOLYMER SELECTED FROM THE GROUP CONSISTING OF POLYESTERS AND POLYETHERS HAVING TERMINAL GROUPS SELECTED FROM THE GROUP CONSISTING OF ORGANIC ISOCYANATE GROUPS AND CHLOROFORMATE GROUPS SAID PREPOLYMER HAVING BEEN PREPARED FROM A MEMBER OF THE GROUP CONSISTING OF POLYESTERS AND POLYETHERS HAVING A FUNCTIONALLY OF ABOVE 2.1, EXTRUDING SAID LIQUID PREPOLYMER INTO AN ORGANIC SOLVENT SOLUTION OF UP TO 10 NORMAL OF A POLYAMINE SELECTED FROM THE GROUP CONSISTING OF PRIMARY AND SECONDARY ALIPHATIC AND HETEROCYCLIC AMINES AND THERBY FORMING A FILAMENT IN SAID SOLVENT SOLUTION, SAID ORGANIC SOLVENT BEING THE SOLE SOLVENT, AND THEREAFTER, REMOVING THE SOLVENT AND EXCESS POLYAMINE AND CURING THE THREAD IN HOT AIR.
References Cited (Backward Citations)
USRE24689E
Cited
USRE24691E
Cited
GB847673A
Cited
US3047356A
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GB944015A
Cited
US3136830A
Cited
US3165566A
Cited
US3111369A
Cited
US3121764A
Cited
US3115384A
Cited
US3198863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |