US3821188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proline and pyroglutamic acid containing tripeptides
Assignee: Wyeth LLC
•
Filing: 1972-06-14
•
Granted: 1974-06-28
•
Expires: 1992-06-14
Abstract
Abstract Novel synthetic proline and/or pyroglutamic acid containing peptides are described which are useful for therapeutic purposes such as reduction of blood platelet adhesiveness.
Inventors
- 👤 Kinley W Mc
- 👤 Gregor W Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:00
CPC Classifications
C; C07; C07K; C07K5/00; C07K5/04; C07K5/08; C07K5/0821; C07K5/0823; C07K5/0825
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
14 words
A compound according to claim 1 wherein X is H-C-H and n is 4.
Claim 2
Dependent Claim
14 words
A compound according to claim 2 which is an acid addition salt of L-prolyl-L-lysyl-glycinamide.
Claim 3
Dependent Claim
8 words
A tripeptide selected from those of the formula:
Claim 4
Dependent Claim
15 words
A compound selected from the class consisting of L-pyroglutamyl-L-lysyl-glycinamide and its non-toxic acid addition salts.
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) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |