US2423689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soda lime composition
Assignee: Dewey and Almy Chemical Co
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Filing: 1945-05-18
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Granted: 1947-07-08
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Expires: 1965-05-18
Abstract
No abstract record available.
Inventors
- 👤 Morgan R Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:22
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01J; B01J20/00; B01J20/02; B01J20/04; B01J20/041; B01J20/06; B01J20/10; B01J20/14; B01J20/30; B01J20/3028; B01J2220/00; B01J2220/40; B01J2220/42
Claims Analysis
Total Claims: 0
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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) | 1950-07-07 | 1951-01-06 | 1951-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-07 | 1955-01-06 | 1955-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-07 | 1959-01-06 | 1959-07-08 | $7700.00 | Window Closed / Lapsed |