US2344785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerization method
Assignee: Dow Chemical Co
•
Filing: 1940-08-03
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Granted: 1944-03-21
•
Expires: 1960-08-03
Abstract
No abstract record available.
Inventors
- 👤 James S Owens
- 👤 Heerema Jacob
- 👤 George W Stanton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:53
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-03-21 | 1947-09-20 | 1948-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-03-21 | 1951-09-20 | 1952-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-03-21 | 1955-09-20 | 1956-03-21 | $7700.00 | Window Closed / Lapsed |