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Patent US2798069A successfully refreshed from Google Patents.
US2798069A
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Werner complexes of hydroxyalkyl pyridines
Assignee: Union Oil Company of California
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Filing: 1954-11-04
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Granted: 1957-07-02
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Expires: 1974-11-04
Abstract
No abstract record available.
Inventors
- 👤 William D Schaeffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:08
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/28; C07D213/30; C07F; C07F13/00; C07F13/005; C07F15/00; C07F15/02; C07F15/025; C07F15/04; C07F15/045; C07F15/06; C07F15/065; C09; C09F; C09F9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A TETRA-COORDINATED WERNER COMPLEX COMPOSED OF (1) ONE MOIC OF A MONOVALENT-ANION-SALT OF A DIVALENT METAL HAVING AN ATOMIC NUMBER BETWEEN AND 28 INCLUSIVE AND (2) FOUR MOLES OF A SUBSTITUTED-PYRIDINE BASE HAVING THE FORMULA:
Claim 2
Dependent Claim
35 words
A TETRA-COORDINATED WERNER COMPLEX COMPOSED OF (1) ONE MOIC OF A MONOVALENT-ANION-SALT OF A DIVALENT METAL HAVING AN ATOMIC NUMBER BETWEEN AND 28 INCLUSIVE AND (2) FOUR MOLES OF A SUBSTITUTED-PYRIDINE BASE 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) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |