Patent US2464741A successfully refreshed from Google Patents.
US2464741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer of allyl glycolate and process of making same
Assignee: Shell Development Co
•
Filing: 1946-04-15
•
Granted: 1949-03-15
•
Expires: 1966-04-15
Abstract
No abstract record available.
Inventors
- 👤 David E Adelson
- 👤 Dannenberg Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:04
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |