US2451870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chlorine manufacture
Assignee: Standard Oil Development Co
•
Filing: 1942-09-04
•
Granted: 1948-10-19
•
Expires: 1962-09-04
Abstract
No abstract record available.
Inventors
- 👤 Roger W Richardson
- 👤 Jerry A Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:05
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/01; C01B7/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US134190A
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US348348A
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US463767A
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US1355105A
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US2034896A
Cited
US2288320A
Cited
US2206399A
Cited
US2191981A
Cited
US2271056A
Cited
US2304128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |