US3437671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making polyesters by the reaction of anhydride acid halide with polyols and resultant adhesive compositions
Assignee: Hexion Inc
•
Filing: 1966-06-10
•
Granted: 1969-04-08
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Expires: 1986-06-10
Abstract
No abstract record available.
Inventors
- 👤 Stanley Robert Sandler
- 👤 Florence Ray Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:25
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/331; C08G65/332; C08G65/3324; C08G65/3326; C08G63/00; C08G63/02; C08G63/12; C08G63/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3182073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |