Patent US3069444A successfully refreshed from Google Patents.
US3069444A
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5, 5'-d' lower alkyl-10, 10'-spirobiphenyl phenaza group iva metal compounds and process of preparing same
Assignee: Merck and Co Inc
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Filing: 1961-02-23
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Granted: 1962-12-18
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Expires: 1981-02-23
Abstract
No abstract record available.
Inventors
- 👤 Wasserman David
- 👤 Robert E Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:23
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/081; C07F7/0812; C07F7/0816; C07F7/22; C07F7/2208; C07F7/24; C07F7/26; C07F7/30; C09; C09K; C09K15/00; C09K15/04; C09K15/30; C10M2207/00; C10M2207/28; C10M2227/00; C10M2227/04; C10M2227/08; C10M2227/081; C10M2227/082; C10M2227/083; C10N; C10N2010/00; C10N2010/08; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
9 words
A PROCESS FOR PREPARING A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
9 words
A PROCESS FOR PREPARING A COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
4 words
COMPOUNDS HAVING THE FORMULA
Claim 4
Dependent Claim
4 words
COMPOUNDS HAVING THE FORMULA
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) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |