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Patent US3290348A successfully refreshed from Google Patents.
US3290348A
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Cobalt (omicron) complexes of phosphorus esters
Assignee: Shell USA Inc
•
Filing: 1963-04-25
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Granted: 1966-12-06
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Expires: 1983-04-25
Abstract
No abstract record available.
Inventors
- 👤 Richard D Mullineaux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:11
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/301; C07; C07C; C07C1/00; C07C1/20; C07C1/22; C07C29/00; C07C29/132; C07C29/136; C07C29/14; C07C29/141; C07F; C07F15/00; C07F15/04; C07F15/045; C07F15/06; C07F15/065; C07C2531/00; C07C2531/16; C07C2531/22; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
2 words
TETRAKIS(TRIHYDROCARBYL PHOSPHITE)COBALT(O).
Claim 2
Dependent Claim
2 words
TETRAKIS(TRIHYDROCARBYL PHOSPHITE)COBALT(O).
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |