US3453246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosettable composition composed of a polyanhydride and a mono-oxirane compound and method of producing
Assignee: Gulf Research and Development Co
•
Filing: 1966-03-14
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Granted: 1969-07-01
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Expires: 1986-03-14
Abstract
No abstract record available.
Inventors
- 👤 William J Heilman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:23
CPC Classifications
C; C08; C08F; C08F8/00; C08F267/00; C08F267/04; C08J; C08J5/00; C08J5/24; C08J5/241; C08J5/244; C08J5/245; C08J5/246; C08J5/249; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3374209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |