US3008932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing interpolymers of bibenzoic acid, an aliphatic glycol and an aromatic glycol, and shaped articles thereof
Assignee: Akzo Nobel UK PLC
•
Filing: 1958-07-28
•
Granted: 1961-11-14
•
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
2026-10-25 06:55
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/19; C08G63/181; C08G63/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A FILAMENT AND FILM-FORMING LINEAR INTERPOLYESTER MELTING ABOVE 140*C. OF COMPONENTS CONSISTING ESSENTIALLY OF P,P'' DIBENZOIC ACID AND AT LEAST TWO MOLS OF MIXED GLYCOLS PER MOL OF SAID ACID, SAID MIXED GLYCOLS CONSISTING ESSENTIALLY OF FROM 90 TO 20 MOL PERCENT OF AN ALIPHATIC GLYCOLS HAVING THE GENERAL FORMULA HO-R-OH WHEREIN R IS A BIVALENT ALIPHATIC HYDROCARBON RADICAL HAVING FROM 2 TO 20 CARBON ATOMS AND FROM 10 TO 80 MOL PERCENT OF AN AROMATIC GLYCOL HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
82 words
A FILAMENT AND FILM-FORMING LINEAR INTERPOLYESTER MELTING ABOVE 140*C. OF COMPONENTS CONSISTING ESSENTIALLY OF P,P'' DIBENZOIC ACID AND AT LEAST TWO MOLS OF MIXED GLYCOLS PER MOL OF SAID ACID, SAID MIXED GLYCOLS CONSISTING ESSENTIALLY OF FROM 90 TO 20 MOL PERCENT OF AN ALIPHATIC GLYCOLS HAVING THE GENERAL FORMULA HO-R-OH WHEREIN R IS A BIVALENT ALIPHATIC HYDROCARBON RADICAL HAVING FROM 2 TO 20 CARBON ATOMS AND FROM 10 TO 80 MOL PERCENT OF AN AROMATIC 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 |