US2466632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon remover and metal surface cleaning composition
Assignee: Shell Development Co
•
Filing: 1947-05-05
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Granted: 1949-04-05
•
Expires: 1967-05-05
Abstract
No abstract record available.
Inventors
- 👤 Borus Ben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:45
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/50; C10; C10L; C10L10/00; C10L10/06; C11D3/00; C11D3/16; C11D3/26; C11D3/30; C11D9/00; C11D9/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1979385A
Cited
US2032174A
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US2303551A
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US2244721A
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US2383114A
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US2404297A
Cited
US2398242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-04 | 1952-10-04 | 1953-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-04 | 1956-10-04 | 1957-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-04 | 1960-10-04 | 1961-04-05 | $7700.00 | Window Closed / Lapsed |