Patent US2900369A successfully refreshed from Google Patents.
US2900369A
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Polyimide composition
Assignee: EIDP Inc
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Filing: 1955-10-11
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Granted: 1959-08-18
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Expires: 1975-10-11
Abstract
No abstract record available.
Inventors
- 👤 Edwards Walter Murray
- 👤 Robinson Ivan Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:39
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1075; C08G73/1082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
POLY-PARA-PHENYLENE-BIS-(1,1-DIMETHYL-5-PENTAMETHYLENE) PYROMELLITIMIDE CHARACTERIZED IN THAT IT CAN BE COLD-DRAWN WHEN IN THE FORM OF A MELT-SPUN FILAMENT.
Claim 2
Dependent Claim
17 words
POLY-PARA-PHENYLENE-BIS-(1,1-DIMETHYL-5-PENTAMETHYLENE) PYROMELLITIMIDE CHARACTERIZED IN THAT IT CAN BE COLD-DRAWN WHEN IN THE FORM OF A MELT-SPUN FILAMENT.
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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |