US2827463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Werner complexes of 4-ethyl pyridine
Assignee: Union Oil Company of California
•
Filing: 1954-11-04
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Granted: 1958-03-18
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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
2026-10-25 10:53
CPC Classifications
C; C07; C07F; C07F15/00; C07F15/04; C07F15/045; C07F13/00; C07F13/005; C07F15/02; C07F15/025; C07F15/06; C07F15/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A TETRA-COORDINATED WERNER COMPLEX COMPOSED OF FOUR MOLE-PROPORTIONS OF 4-ETHYL PYRIDINE COORDINATED WITH ONE MOLE-PROPORTION OF A DITHIOCYANATE OF A METAL HAVING AN ATOMATIC NUMBER BETWEEN 25 AND 28 INCLUSIVE, SAID COMPLEX BEING CAPABLE OF FORMING A CLATHRATE WITH P-XYLENE IN PREFERENCE TO THE OTHER C-8 ALKARYL ISOMERS.
Claim 2
Dependent Claim
48 words
A TETRA-COORDINATED WERNER COMPLEX COMPOSED OF FOUR MOLE-PROPORTIONS OF 4-ETHYL PYRIDINE COORDINATED WITH ONE MOLE-PROPORTION OF A DITHIOCYANATE OF A METAL HAVING AN ATOMATIC NUMBER BETWEEN 25 AND 28 INCLUSIVE, SAID COMPLEX BEING CAPABLE OF FORMING A CLATHRATE WITH P-XYLENE IN PREFERENCE TO THE OTHER C-8 ALKARYL ISOMERS.
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) | 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 |