US2755273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyesters from hydroxyalkyl ethers of vanillic acid and esters thereof
Assignee: Rayonier Inc
•
Filing: 1953-01-21
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Granted: 1956-07-17
•
Expires: 1973-01-21
Abstract
No abstract record available.
Inventors
- 👤 Louis H Bock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:23
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/664
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
LINEAR POLYESTERS CHARACTERIZED BY HAVING A REPEATING STRUCTURE REPRESENTED BY
Claim 2
Dependent Claim
10 words
LINEAR POLYESTERS CHARACTERIZED BY HAVING A REPEATING STRUCTURE REPRESENTED BY
References Cited (Backward Citations)
US2471023A
Cited
US2600376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |