Patent US3256241A successfully refreshed from Google Patents.
US3256241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glycol 1, 4-bicyclo [2. 2. 2] octanedicarboxylate polyesters
Assignee: EIDP Inc
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Filing: 1962-11-07
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Granted: 1966-06-14
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Expires: 1982-11-07
Abstract
No abstract record available.
Inventors
- 👤 William H Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:48
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/78; C08G63/82; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
FIBER-FORMING LINEAR POLYESTER CONSISTING ESSENTIALLY OF RECURRING ESTER UNITS OF THE STRUCTURAL FORMULA,
Claim 2
Dependent Claim
13 words
FIBER-FORMING LINEAR POLYESTER CONSISTING ESSENTIALLY OF RECURRING ESTER UNITS OF THE STRUCTURAL 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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |