US3373177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of metal chelates of beta-iminocarbonyls
Assignee: Union Oil Company of California
•
Filing: 1963-05-20
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Granted: 1968-03-12
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Expires: 1983-05-20
Abstract
No abstract record available.
Inventors
- 👤 Donald C Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:56
CPC Classifications
C; C07; C07D; C07D495/00; C07D495/02; C07D495/04; C07C; C07C229/00; C07C229/76; C07F; C07F13/00; C07F13/005; C07F9/00; C07F9/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
THE PREPARATION OF A METAL CHELATE SALT FROM A TRANSITION METAL THAT FORMS AMMINE SALTS IN AQUEOUS AMMONIACAL SOLUTIONS AND A LIGAND HAVING THE FOLLOWING STRUCTURE:
Claim 2
Dependent Claim
26 words
THE PREPARATION OF A METAL CHELATE SALT FROM A TRANSITION METAL THAT FORMS AMMINE SALTS IN AQUEOUS AMMONIACAL SOLUTIONS AND A LIGAND HAVING THE FOLLOWING STRUCTURE:
References Cited (Backward Citations)
US2278965A
Cited
US2465296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |