US2907096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped polyacrylonitrile structures
Assignee: Individual
•
Filing: 1953-06-23
•
Granted: 1959-10-06
•
Expires: 1973-06-23
Abstract
No abstract record available.
Inventors
- 👤 Halbig Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:20
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/18; D01F6/28; D01F6/38; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2975; Y10T428/31504; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A DELUSTERED FILAMENT COMPOSED OF AN ACRYLONITRILE POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYACRYLONITRILE AND COPOLYMERS CONTAINING AT LEAST 80 PERCENT BY WEIGHT OF ACRYLONITRILE MONOMER UNITS, THE BALANCE BEING POLYMERS OF COMPOUNDS COPOLYMERIZABLE WITH ACRYLONITRILE, SAID POLYMER BEING SOLUBLE IN NITRIC ACID, THE INTERIOR OF SAID FILAMENT BEING HONEYCOMBED WITH A GREAT NUMBER OF SMALL CAVITIES, SAID FILAMENT HAVING
Claim 2
Dependent Claim
61 words
A DELUSTERED FILAMENT COMPOSED OF AN ACRYLONITRILE POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYACRYLONITRILE AND COPOLYMERS CONTAINING AT LEAST 80 PERCENT BY WEIGHT OF ACRYLONITRILE MONOMER UNITS, THE BALANCE BEING POLYMERS OF COMPOUNDS COPOLYMERIZABLE WITH ACRYLONITRILE, SAID POLYMER BEING SOLUBLE IN NITRIC ACID, THE INTERIOR OF SAID FILAMENT BEING HONEYCOMBED WITH A GREAT NUMBER OF SMALL CAVITIES, SAID FILAMENT HAVING
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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) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |