US2800475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3, 4, 5-trimethoxybenzoic acid esters of nu-hydroxyalkyl hydroxyisoquinolines and derivatives thereof
Assignee: GD Searle LLC
•
Filing: 1955-12-05
•
Granted: 1957-07-23
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Expires: 1975-12-05
Abstract
No abstract record available.
Inventors
- 👤 Richard A Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:28
CPC Classifications
C; C07; C07D; C07D217/00; C07D217/02; C07D217/10; C07D217/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A MEMBER OF THE CLASS CONSISTING OF SALT OF THE STRUCTURAL FORMULAS
Claim 2
Dependent Claim
12 words
A MEMBER OF THE CLASS CONSISTING OF SALT OF THE STRUCTURAL FORMULAS
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) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |