US2527863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modification and dyeing of acrylonitrile polymers
Assignee: EIDP Inc
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Filing: 1947-08-29
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Granted: 1950-10-31
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Expires: 1967-08-29
Abstract
No abstract record available.
Inventors
- 👤 Myron Q Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:36
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/70; D06P3/74; C; C08; C08L; C08L33/00; C08L33/18; C08L33/20; C09; C09B; C09B35/00; C09B35/02; C09B35/039; C09B35/205; C09B35/215; D01; D01F; D01F6/00; D01F6/02; D01F6/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
A METHOD OF FORMING A DYED STRUCTURE COMPRISING BLENDING AN ACRYLONITRILE POLYMER CONTAINING AT LEAST 85% OF ACRYLONITRILE WITH A POLYVINYL PYRIDINE USED IN AMOUNTS NO MORE THAN 10% OF WEIGHT OF SAID ACRYLONITRILE POLYMER; FORMING SAID STRUCTURE FROM THE RESULTANT BLEND; AND TREATING SAID STRUCTURE WITH AN AQUEOUS BATH CONTAINING AN ACID DYE.
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) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |