Patent US3560228A successfully refreshed from Google Patents.
Patent US3008934A successfully refreshed from Google Patents.
US3008934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament and film forming interpolyesters of bibenzoic acid, certain aromatic acids and a dihydric alcohol
Assignee: Akzo Nobel UK PLC
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Filing: 1958-07-28
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Granted: 1961-11-14
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Expires: 1978-07-28
Abstract
No abstract record available.
Inventors
- 👤 Edward A Wielicki
- 👤 Robert D Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:59
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/181; C08G63/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A FILAMENT AND FILM FORMING LINEAR INTERPOLYESTER MELTING ABOVE 140*C. OF COMPONENTS CONSISTING ESSENTIALLY OF A MIXTURE OF DICARBOXYLIC ACIDS AND AT LEAST TWO MOLS PER MOL OF MIXED ACIDS OF A GLYCOL HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
38 words
A FILAMENT AND FILM FORMING LINEAR INTERPOLYESTER MELTING ABOVE 140*C. OF COMPONENTS CONSISTING ESSENTIALLY OF A MIXTURE OF DICARBOXYLIC ACIDS AND AT LEAST TWO MOLS PER MOL OF MIXED ACIDS OF A GLYCOL HAVING THE FOLLOWING GENERAL 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) | 1964-11-13 | 1965-05-15 | 1965-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-13 | 1969-05-15 | 1969-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-13 | 1973-05-15 | 1973-11-14 | $7700.00 | Window Closed / Lapsed |