US2928796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric product prepared by reacting modified vegetable drying oils and vinyl-containing modifiers
Assignee: Armstrong World Industries Inc
•
Filing: 1955-01-20
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Granted: 1960-03-15
•
Expires: 1975-01-20
Abstract
No abstract record available.
Inventors
- 👤 John S Heckles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:39
CPC Classifications
C; C08; C08F; C08F242/00; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/12; C08F212/34; C08F212/36; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1804
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2650907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |