US3110693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of terephthalate polyesters using a manganese glycoloxide catalyst
Assignee: Imperial Chemical Industries Ltd
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Filing: 1960-09-21
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Granted: 1963-11-12
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Expires: 1980-09-21
Abstract
No abstract record available.
Inventors
- 👤 Ure George Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:36
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/78; C08G63/82; C08G63/83
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
AN IMPROVED PROCESS FOR THE MANUFACTURE OF A POLYMERIC POLYESTER WHICH COMPRISES REACTING A DIALKYL ESTER OF TEREPHTHALIC ACID WITH A GLYCOL HAVING THE FORMULA
Claim 2
Dependent Claim
25 words
AN IMPROVED PROCESS FOR THE MANUFACTURE OF A POLYMERIC POLYESTER WHICH COMPRISES REACTING A DIALKYL ESTER OF TEREPHTHALIC ACID WITH A GLYCOL HAVING 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) | 1966-11-11 | 1967-05-13 | 1967-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-11 | 1971-05-13 | 1971-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-11 | 1975-05-13 | 1975-11-12 | $7700.00 | Window Closed / Lapsed |