US2870045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impregnated synthetic fiber sewing thread and method of making same
Assignee: American Thread Co
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Filing: 1956-12-17
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Granted: 1959-01-20
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Expires: 1976-12-17
Abstract
No abstract record available.
Inventors
- 👤 Howard D Corkum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:12
CPC Classifications
D; D06; D06M; D06M7/00; D06M2200/00; D06M2200/40; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/2971
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE METHOD OF TREATING SYNTHETIC FIBER SEWING THREAD COMPRISING THE STEPS OF MELTING TOGETHER AT 160*F. 12.5 PARTS BY WEIGHT OF PETROLEUM JELLY, 9.5 PARTS BY WEIGHT OF BUTYL STEARATE, 8.0 PARTS BY WEIGHT OF OLEIC ACID, AND 2.5 PARTS BY WEIGHT OF TRIETHANOLAMINE, STIRRING THE MIXTURE TO A CLEAR AMBER LIQUID, ADDING 63.5 PARTS BY WEIGHT OF WATER SLOWLY WHILE MAINTAINING THE TEMPERATURE OF THE MIXTURE AT 160*F., ADDING AND MIXING THEREWITH 4.0 PARTS BY WEIGHT OF A 60% AQUEOUS DISPERSION OF TETRAFLUOROETHYLENE RESIN SOLIDS, AND THEN IMPREGNATING SAID THREAD WITH SUCH MIXTURE AND DRYING THE TREATED THREAD AT ABOUT 248-284*F. FOR 10 TO 20 SECONDS.
Claim 2
Independent Claim
107 words
THE METHOD OF TREATING SYNTHETIC FIBER SEWING THREAD COMPRISING THE STEPS OF MELTING TOGETHER AT 160*F. 12.5 PARTS BY WEIGHT OF PETROLEUM JELLY, 9.5 PARTS BY WEIGHT OF BUTYL STEARATE, 8.0 PARTS BY WEIGHT OF OLEIC ACID, AND 2.5 PARTS BY WEIGHT OF TRIETHANOLAMINE, STIRRING THE MIXTURE TO A CLEAR AMBER LIQUID, ADDING 63.5 PARTS BY WEIGHT OF WATER SLOWLY WHILE MAINTAINING THE TEMPERATURE OF THE MIXTURE AT 160*F., ADDING AND MIXING THEREWITH 4.0 PARTS BY WEIGHT OF A 60% AQUEOUS DISPERSION OF TETRAFLUOROETHYLENE RESIN SOLIDS, AND THEN IMPREGNATING SAID THREAD WITH SUCH MIXTURE AND DRYING THE TREATED THREAD AT ABOUT 248-284*F. FOR 10 TO 20 SECONDS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |