Patent US2870097A successfully refreshed from Google Patents.
US2870097A
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Process for the preparation of polymeric acetals
Assignee: EIDP Inc
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Filing: 1955-07-01
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Granted: 1959-01-20
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Expires: 1975-07-01
Abstract
No abstract record available.
Inventors
- 👤 Pattison Dexter Brayton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:53
CPC Classifications
C; C08; C08G; C08G4/00; C08G2/00; C08G2/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2071252A
Cited
US2497315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |