US3329656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zinc chelates as catalysts in the production of polyesters
Assignee: Monsanto Co
•
Filing: 1966-09-08
•
Granted: 1967-07-04
•
Expires: 1986-09-08
Abstract
No abstract record available.
Inventors
- 👤 Cilton W Tate
- 👤 Jr Roland J Bryan
- 👤 Henry L King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:56
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/78; C08G63/82; C08G63/83
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
IN A PROCESS FOR PRODUCING SYNTHETIC, HIGHLY POLYMERIC POLYESTERS WHEREIN AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF DICARBOXYLIC ACIDS AND DIALKYL ESTERS OF DICARBOXYLIC ACIDS AND AT LEAST ONE GLYCOL OF THE SERIES
Claim 2
Dependent Claim
36 words
IN A PROCESS FOR PRODUCING SYNTHETIC, HIGHLY POLYMERIC POLYESTERS WHEREIN AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF DICARBOXYLIC ACIDS AND DIALKYL ESTERS OF DICARBOXYLIC ACIDS AND AT LEAST ONE GLYCOL OF THE SERIES
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |