US2830049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acetylenic tetrahydroisoquinoline derivatives
Assignee: LAKESIDE LAB Inc
•
Filing: 1956-05-28
•
Granted: 1958-04-08
•
Expires: 1976-05-28
Abstract
No abstract record available.
Inventors
- 👤 John H Biel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:48
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/06; C07D295/067; C07D217/00; C07D217/02; C07D217/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
1 words
N-(4-(N-MORPHOLINO)-2-BUTYNYL)-1,2,3,4,-TETRAHYDROISOQUINOLINE.
Claim 4
Dependent Claim
1 words
N-(4-(N-MORPHOLINO)-2-BUTYNYL)-1,2,3,4,-TETRAHYDROISOQUINOLINE.
References Cited (Backward Citations)
DE896810C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |