US2471818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carboxylated resins and method of making same
Assignee: Dow Chemical Co
•
Filing: 1944-11-04
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Granted: 1949-05-31
•
Expires: 1964-11-04
Abstract
No abstract record available.
Inventors
- 👤 Melvin J Hunter
- 👤 William C Bauman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:22
CPC Classifications
C; C08; C08F; C08F222/00; C08F222/04; C08F222/06; C08F222/08; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F212/34; C08F212/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE598732C
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US2047398A
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US2340110A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |