Patent US3264270A successfully refreshed from Google Patents.
US3264270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyimides
Assignee: Imperial Chemical Industries Ltd
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Filing: 1963-02-20
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Granted: 1966-08-02
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Expires: 1983-02-20
Abstract
No abstract record available.
Inventors
- 👤 Mcintyre James Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:16
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A POLYAMIDE CONSISTING OF REPEAT UNITS OF THE FORMULA:
Claim 2
Dependent Claim
9 words
A POLYAMIDE CONSISTING OF REPEAT UNITS OF THE FORMULA:
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |