Patent US1805435A successfully refreshed from Google Patents.
Patent US2699438A successfully refreshed from Google Patents.
US2699438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear polyesters of carboxy-2-hydroxymethyl benzodioxane
Assignee: Rayonier Inc
•
Filing: 1952-04-19
•
Granted: 1955-01-11
•
Expires: 1972-04-19
Abstract
No abstract record available.
Inventors
- 👤 Louis H Bock
- 👤 James K Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:27
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/664
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
THE LINEAR POLYESTER OBTAINED BY THE CONDENSATION AT A TEMPERATURE OF FROM 200* TO 300*C. IN AN INERT ATMOSPHERE OF A CARBOXY-2-HYDROXYMETHYL BENZODIOXANE OF THE FOLLOWING STRUCTURE:
Claim 2
Dependent Claim
27 words
THE LINEAR POLYESTER OBTAINED BY THE CONDENSATION AT A TEMPERATURE OF FROM 200* TO 300*C. IN AN INERT ATMOSPHERE OF A CARBOXY-2-HYDROXYMETHYL BENZODIOXANE OF THE FOLLOWING STRUCTURE:
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) | 1958-01-10 | 1958-07-12 | 1959-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-10 | 1962-07-12 | 1963-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-10 | 1966-07-12 | 1967-01-11 | $7700.00 | Window Closed / Lapsed |