US2806850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-(2-ethyl-1, 2, 3, 4-tetrahydroisoquinolinium)-3-(trimethylammonium)-propane disalts
Assignee: Irwin Neisler and Co
•
Filing: 1955-08-30
•
Granted: 1957-09-17
•
Expires: 1975-08-30
Abstract
No abstract record available.
Inventors
- 👤 Cavallito Chester John
- 👤 Gray Allan Poe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:45
CPC Classifications
C; C07; C07D; C07D217/00; C07D217/02; C07D217/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
1- (2-ETHYL -1,2,3,4-TETRAHYDROISOQUINOLINIUM)-3(TRIMETHYLAMMONIUM)-PROPANE SALTS WHEREIN THE ANOINS ARE STABLE, NON-TOXIC ANIONS.
Claim 2
Dependent Claim
11 words
1- (2-ETHYL -1,2,3,4-TETRAHYDROISOQUINOLINIUM)-3(TRIMETHYLAMMONIUM)-PROPANE SALTS WHEREIN THE ANOINS ARE STABLE, NON-TOXIC ANIONS.
References Cited (Backward Citations)
US2271378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |