US3317464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of linear aromatic polyesters
Assignee: Gevaert Photo Producten NV
•
Filing: 1963-06-10
•
Granted: 1967-05-02
•
Expires: 1983-06-10
Abstract
No abstract record available.
Inventors
- 👤 Conix Andre Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:04
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/181; C08G63/185; C08G63/19; C08G63/193; C08G63/66; C08G63/668; C08G63/672
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A HIGHLY POLYMERIC, LINEAR POLYESTER SOLUBLE IN CHLORINATED HYDROCARBONS AND HAVING AN INTRISIC VISCOSITY OF AT LEAST 0.4 DL./G. WHEN MEASURED IN A SOLVENT TAKEN FROM THE GROUP CONSISTING OF 1,2-DICHLOROETHANE AND SYMTETRACHLOROETHANE AT 25*C., OF A NON-FUSED, POLYNUCLEAR PHENOL AND A NON-FUSED, POLYNUCLEAR AROMATIC DICARBOXYLIC ACID, CONSISTING ESSENTIALLY OF RE-OCCURRING UNITS OF THE FORMULA:
Claim 2
Dependent Claim
55 words
A HIGHLY POLYMERIC, LINEAR POLYESTER SOLUBLE IN CHLORINATED HYDROCARBONS AND HAVING AN INTRISIC VISCOSITY OF AT LEAST 0.4 DL./G. WHEN MEASURED IN A SOLVENT TAKEN FROM THE GROUP CONSISTING OF 1,2-DICHLOROETHANE AND SYMTETRACHLOROETHANE AT 25*C., OF A NON-FUSED, POLYNUCLEAR PHENOL AND A NON-FUSED, POLYNUCLEAR AROMATIC DICARBOXYLIC ACID, CONSISTING ESSENTIALLY OF RE-OCCURRING 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) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |