US2749328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxy-octahydro aldehyde from dicyclopentenyl alcohol
Assignee: EIDP Inc
•
Filing: 1952-06-25
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Granted: 1956-06-05
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Expires: 1972-06-25
Abstract
No abstract record available.
Inventors
- 👤 Edward T Cline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:10
CPC Classifications
C; C07; C07C; C07C47/00; C07C47/28; C07C47/36
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
27 words
A FILAMENT CONSISTING ESSENTIALLY OF POLYVINYL ALCOHOL HAVING 30 TO 50% OF ITS HYDROXYLS ACETALIZED BY REACTION WITH THE MIXTURE ESSENTIALLY COMPRISING A HYDROXYOCTAHYDRO-4,7-METHANOINDENECARBOXALDEHYDE OF THE FORMULA
References Cited (Backward Citations)
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Cited
US2385788A
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US2462448A
Cited
US2662922A
Cited
US2616928A
Cited
US2694730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |