Patent US2352164A successfully refreshed from Google Patents.
US2352164A
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Metal deactivator
Assignee: Shell Development Co
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Filing: 1942-09-07
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Granted: 1944-06-27
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Expires: 1962-09-07
Abstract
No abstract record available.
Inventors
- 👤 Hugh D Burnham
- 👤 Frederick T Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:07
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/09; C10M2207/28; C10M2207/284; C10M2207/285; C10M2207/40; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/062; C10M2215/14; C10M2215/20; C10M2215/202; C10M2215/204; C10M2215/24; C10M2215/26; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/085; C10M2219/086; C10M2219/087; C10M2219/089; C10M2227/00; C10M2227/09; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-06-27 | 1947-12-27 | 1948-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-06-27 | 1951-12-27 | 1952-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-06-27 | 1955-12-27 | 1956-06-27 | $7700.00 | Window Closed / Lapsed |