US3150146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly carboxyaryl pyridines
Assignee: Standard Oil Co
•
Filing: 1961-02-28
•
Granted: 1964-09-22
•
Expires: 1981-02-28
Abstract
No abstract record available.
Inventors
- 👤 Ellis K Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:16
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/54; C07D213/55; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/46; C08G18/4615; C08G18/4638; C08G18/4646; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A CARBOXY ARYL PYRIDINE SELECTED FROM THE CLASS CONSISTING OF
Claim 2
Dependent Claim
10 words
A CARBOXY ARYL PYRIDINE SELECTED FROM THE CLASS CONSISTING OF
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |