US2473929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process
Assignee: Shawinigan Resins Corp
•
Filing: 1946-02-18
•
Granted: 1949-06-21
•
Expires: 1966-02-18
Abstract
No abstract record available.
Inventors
- 👤 Wilfred K Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:43
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/28
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1896491A
Cited
US2333633A
Cited
US2310780A
Cited
US2380473A
Cited
US2339184A
Cited
US2388600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |