US2827462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Werner complexes
Assignee: Union Oil Company of California
•
Filing: 1953-01-02
•
Granted: 1958-03-18
•
Expires: 1973-01-02
Abstract
No abstract record available.
Inventors
- 👤 Dorsey William Smith
- 👤 William D Schaeffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:20
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/1805; B01J31/181; B01J2531/00; B01J2531/80; B01J2531/84; B01J2531/847
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A METHOD FOR PREPARING A HYDROCARBON SOLUTION OF A METAL OF ATOMIC NUMBER 25-29 INCLUSIVE WHICH COMPRISES COMPLEXING A SALT OF SAID METAL WITH FOUR MOLEEQUIVALENTS OF AN ALKYL-PYRIDINE BASE TO FORM A TETRACOORDINATED WERNER COMPLEX, THEN DISSOLVING SAID WERNER COMPLEX IN SAID HYDROCARBON OIL, SAID ALKYL PYRIDINE BASE CONTAINING AT LEAST 2 AND NOT MORE THAN 9 ALKYL CARBON ATOMS, ALL OF SAID ALKYL CARBON ATOMS BEING IN THE FORM OF ALKYL GROUPS ATTACHED TO THE RING IN POSITIONS NON-ADJACENT TO THE HETERO-N ATOM.
Claim 2
Independent Claim
85 words
A METHOD FOR PREPARING A HYDROCARBON SOLUTION OF A METAL OF ATOMIC NUMBER 25-29 INCLUSIVE WHICH COMPRISES COMPLEXING A SALT OF SAID METAL WITH FOUR MOLEEQUIVALENTS OF AN ALKYL-PYRIDINE BASE TO FORM A TETRACOORDINATED WERNER COMPLEX, THEN DISSOLVING SAID WERNER COMPLEX IN SAID HYDROCARBON OIL, SAID ALKYL PYRIDINE BASE CONTAINING AT LEAST 2 AND NOT MORE THAN 9 ALKYL CARBON ATOMS, ALL OF SAID ALKYL CARBON ATOMS BEING IN THE FORM OF ALKYL GROUPS ATTACHED TO THE RING IN POSITIONS NON-ADJACENT TO THE HETERO-N ATOM.
References Cited (Backward Citations)
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GB343569A
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GB388374A
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US2054490A
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US2476514A
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US2437645A
Cited
US2426586A
Cited
US2466925A
Cited
US2554182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |