US2676164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated nylon fabrics
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1951-02-26
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Granted: 1954-04-20
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Expires: 1971-02-26
Abstract
No abstract record available.
Inventors
- 👤 Charlton William
- 👤 Rutter Evan Guy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:45
CPC Classifications
D; D06; D06P; D06P1/00; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4236; C08G18/4238; C08G18/4241; D06M; D06M13/00; D06M13/322; D06M13/395; D06M15/00; D06M15/19; D06M15/37; D06M15/564; D06P1/004; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31736; Y10T428/31786; Y10T442/00; Y10T442/20; Y10T442/2549; Y10T442/2566; Y10T442/2574; Y10T442/2861; Y10T442/2893
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A COMPOSITION COMPRISING (1) A POLYESTER OBTAINED FROM ADIPIC ACID IN AMOUNT SUFFICIENT TO GIVE SAID POLYESTER AN ACID NUMBER BELOW 10 MILLIGRAMS OF KOH PER GRAM, ETHYLENE GLYCOL AND GLYCEROL IN THE RATIO OF FROM ABOUT 2.6 TO 6 MOLES OF ETHYLENE GLYCOL PER MOLE OF GLYCEROL, (2) AN AROMATIC HYDROCARBON DIISOCYANATE IN AN AMOUNT CONSTITUTING FROM 20 TO 40% BY WEIGHT OF THE POLYESTER AND (3) A SOLVENT FOR THE POLYESTER.
Claim 2
Dependent Claim
73 words
A COMPOSITION COMPRISING (1) A POLYESTER OBTAINED FROM ADIPIC ACID IN AMOUNT SUFFICIENT TO GIVE SAID POLYESTER AN ACID NUMBER BELOW 10 MILLIGRAMS OF KOH PER GRAM, ETHYLENE GLYCOL AND GLYCEROL IN THE RATIO OF FROM ABOUT 2.6 TO 6 MOLES OF ETHYLENE GLYCOL PER MOLE OF GLYCEROL, (2) AN AROMATIC HYDROCARBON DIISOCYANATE IN AN AMOUNT CONSTITUTING FROM 20 TO 40% BY WEIGHT OF THE POLYESTER AND (3) A SOLVENT FOR THE POLYESTER.
References Cited (Backward Citations)
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Cited
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Cited
GB573932A
Cited
US2370362A
Cited
US2503209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |