US3047536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyesters
Assignee: Dow Chemical Co
•
Filing: 1957-02-05
•
Granted: 1962-07-31
•
Expires: 1977-02-05
Abstract
No abstract record available.
Inventors
- 👤 David A Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:41
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A POLYESTER OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
6 words
A POLYESTER OF THE 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) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |