US2906592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame- and crease-resistant textiles from aziridine carboxyalkylcellulose
Assignee: Individual
•
Filing: 1957-08-20
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Granted: 1959-09-29
•
Expires: 1977-08-20
Abstract
No abstract record available.
Inventors
- 👤 Wilson A Reeves
- 👤 John D Guthrie
- 👤 Jr George L Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:16
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/667; D06M13/00; D06M13/322; D06M13/487; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2369; Y10T442/2393; Y10T442/2631; Y10T442/2672; Y10T442/268
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
CELLULOSIC MATERIALS WHICH CONTAIN NITROGEN ATOMS ATTACHED DIRECTLY TO PENTAVALENT PHOSPHORUS ATOMS IN THE REOCCURING CONNECTING STRUCTURES
Claim 2
Dependent Claim
17 words
CELLULOSIC MATERIALS WHICH CONTAIN NITROGEN ATOMS ATTACHED DIRECTLY TO PENTAVALENT PHOSPHORUS ATOMS IN THE REOCCURING CONNECTING STRUCTURES
References Cited (Backward Citations)
US2286726A
Cited
DE863055C
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DE854651C
Cited
DE888853C
Cited
US2606902A
Cited
US2606900A
Cited
US2691567A
Cited
US2672459A
Cited
US2654738A
Cited
US2824779A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |