US3917600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-(Benzofuran)-acetamidines
Assignee: Labaz SA
•
Filing: 1973-04-23
•
Granted: 1975-11-04
•
Expires: 1993-04-23
Abstract
Abstract 2-(2-Alkyl-3-benzofuranyl)-N,N-(3-alkyl-3-azapentamethylene)acetamidines and related derivatives are useful antihypertensive agents.
Inventors
- 👤 Marcel Descamps
- 👤 Alex Areschka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:46
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D307/78; C07D307/79; C07D405/00; C07D405/02; C07D405/12
Claims Analysis
Total Claims: 16
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
8 words
2-(2-Ethyl-3-benzofuranyl)-N,N-(3-ethyl-3-aza-pentamethylene)-acetamidine or its pharmaceutically acceptable acid addition salts.
Claim 4
Dependent Claim
8 words
2-(2-Ethyl-3-benzofuranyl)-N,N-(3-ethyl-3-aza-pentamethylene)-acetamidine or its pharmaceutically acceptable acid addition salts.
Claim 5
Dependent Claim
8 words
2-(2-Ethyl-3-benzofuranyl)-N,N-(3-n-propyl-3-aza-pentamethylene)-acetamidine or its pharmaceutically acceptable acid addition salts.
Claim 6
Dependent Claim
8 words
2-(2-Ethyl-3-benzofuranyl)-N,N-(3-n-propyl-3-aza-pentamethylene)-acetamidine or its pharmaceutically acceptable acid addition salts.
Claim 7
Dependent Claim
8 words
2-(2-Ethyl-3-benzofuranyl)-N,N-(3-methyl-3-aza-pentamethylene)-acetamidine or its pharmaceutically acceptable acid addition salts.
Claim 8
Dependent Claim
8 words
2-(2-Ethyl-3-benzofuranyl)-N,N-(3-methyl-3-aza-pentamethylene)-acetamidine or its pharmaceutically acceptable acid addition salts.
Claim 9
Dependent Claim
9 words
2-(2-Ethyl-3-benzofuranyl)-N,N-(3-carbethoxy-3-aza-pentamethylene) -acetamidine or its pharmaceutically acceptable acid addition salts.
Claim 10
Dependent Claim
9 words
2-(2-Ethyl-3-benzofuranyl)-N,N-(3-carbethoxy-3-aza-pentamethylene) -acetamidine or its pharmaceutically acceptable acid addition salts.
Claim 11
Dependent Claim
9 words
2-(2-Ethyl-3-benzofuranyl)-N,N-(3-isopropyl-3-aza-pentamethylene) -acetamidine or its pharmaceutically acceptable acid addition salts.
Claim 12
Dependent Claim
9 words
2-(2-Ethyl-3-benzofuranyl)-N,N-(3-isopropyl-3-aza-pentamethylene) -acetamidine or its pharmaceutically acceptable acid addition salts.
Claim 13
Dependent Claim
8 words
2-(2-Ethyl-3-benzofuranyl)-N,N-(3-(2-hydroxy-1-propyl)-3-aza-pentamethylene)-acetamidine or its pharmaceutically acceptable acid addition salts.
Claim 14
Dependent Claim
8 words
2-(2-Ethyl-3-benzofuranyl)-N,N-(3-(2-hydroxy-1-propyl)-3-aza-pentamethylene)-acetamidine or its pharmaceutically acceptable acid addition salts.
Claim 15
Dependent Claim
8 words
2-(2-Ethyl-3-benzofuranyl)-N,N-(3-aza-pentamethylene)-acetamidine or its pharmaceutically acceptable acid addition salts.
Claim 16
Dependent Claim
8 words
2-(2-Ethyl-3-benzofuranyl)-N,N-(3-aza-pentamethylene)-acetamidine or its pharmaceutically acceptable acid addition salts.
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) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |