US2914489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of poly p-xylene polymers containing halogen
Assignee: EIDP Inc
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Filing: 1956-01-10
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Granted: 1959-11-24
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Expires: 1976-01-10
Abstract
No abstract record available.
Inventors
- 👤 Luther A R Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:07
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/025; C08G2261/00; C08G2261/30; C08G2261/34; C08G2261/342; C08G2261/3424
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A PROCESS OF FORMING A POLYMER WHICH COMPRISES COOLING THE PYROLYZED VAPORS OF A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
18 words
A PROCESS OF FORMING A POLYMER WHICH COMPRISES COOLING THE PYROLYZED VAPORS OF A COMPOUND OF THE FORMULA:
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |