Patent US3282886A successfully refreshed from Google Patents.
US3282886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polycarbonamides of improved photostability and dye lightfastness
Assignee: EIDP Inc
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Filing: 1962-07-27
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Granted: 1966-11-01
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Expires: 1982-07-27
Abstract
No abstract record available.
Inventors
- 👤 Gadecki Filon Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:57
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3472; C08K5/3475
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
FIBER- AND FILM-FORMING SYNTHETIC LINEAR POLYCARBONAMIDE CONTAINING A MANGANESE SALT IN AN AMOUNT PROVIDING AT LEAST 5 PARTS PER MILLION OF MN++, BASED ON THE WEIGHT OF THE POLYCARBONAMIDE, AND EXHIBITING A SYNERGISTIC EFFECT IN TERMS OF DYE LIGHT FASTNESS AND LIGHT STABILITY, SAID POLYCARBONAMIDE HAVING RECURRING CARBONAMIDE LINKAGES AS AN INTEGRAL PART OF THE POLYMER CHAIN CONTAINING CHEMICALLY BONDED THERETO IN THE PROPORTION OF 0.05 TO 10 MOL PERCENT, BASED UPON THE NUMBER OF SAID CARBONAMIDE LINKAGES, AN ULTRAVIOLET ABSORBING BENZOTRIAZOLE RADICAL OF THE FORMULA
Claim 2
Dependent Claim
86 words
FIBER- AND FILM-FORMING SYNTHETIC LINEAR POLYCARBONAMIDE CONTAINING A MANGANESE SALT IN AN AMOUNT PROVIDING AT LEAST 5 PARTS PER MILLION OF MN++, BASED ON THE WEIGHT OF THE POLYCARBONAMIDE, AND EXHIBITING A SYNERGISTIC EFFECT IN TERMS OF DYE LIGHT FASTNESS AND LIGHT STABILITY, SAID POLYCARBONAMIDE HAVING RECURRING CARBONAMIDE LINKAGES AS AN INTEGRAL PART OF THE POLYMER CHAIN CONTAINING CHEMICALLY BONDED THERETO IN THE PROPORTION OF 0.05 TO 10 MOL PERCENT, BASED UPON THE NUMBER OF SAID CARBONAMIDE LINKAGES, AN ULTRAVIOLET ABSORBING BENZOTRIAZOLE RADICAL OF THE FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |