US2471875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making stabilized jel-type hydrated lime
Assignee: United States Gypsum Co
•
Filing: 1945-01-01
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Granted: 1949-05-31
•
Expires: 1965-01-01
Abstract
No abstract record available.
Inventors
- 👤 Bruce E Kester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:38
CPC Classifications
C; C04; C04B; C04B2/00; C04B2/02; C04B2/04; C04B2/06; C04B2/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US460697A
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US1634459A
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US683188A
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GB191410130A
Cited
US1604574A
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US1604575A
Cited
US1604576A
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US1732409A
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US1912883A
Cited
US2193391A
Cited
US2423335A
Cited
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 |