Patent US4097471A successfully refreshed from Google Patents.
US4097471A
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Polypeptides with morphine-like activity
Assignee: Wyeth LLC
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Filing: 1977-05-26
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Granted: 1978-06-27
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Expires: 1997-05-26
Abstract
Abstract The polypeptide H-Tyr-Gly-Gly-Phe-Leu-Thr-Ser-Glu-Lys-Ser-Gln-Thr-Pro-Leu-Val-Thr-OH, or a non-toxic salt thereof, exerts an analgesic effect in rats when injected into the lateral brain ventricle.
Inventors
- 👤 Dimitrios Sarantakis
- 👤 Larry Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:07
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/435; C07K14/665; C07K14/67; A; A61; A61K; A61K38/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
20 words
A polypeptide of the formula: H-Tyr-Gly-Gly-Phe-Leu-Thr-Ser-Glu-Lys-Ser-Gln-Thr-Pro-Leu-Val-Thr-OH or a non-toxic salt thereof, all optically active amino acids being of the L-configuration.
Claim 2
Dependent Claim
20 words
A polypeptide of the formula: H-Tyr-Gly-Gly-Phe-Leu-Thr-Ser-Glu-Lys-Ser-Gln-Thr-Pro-Leu-Val-Thr-OH or a non-toxic salt thereof, all optically active amino acids being of the L-configuration.
Claim 3
Dependent Claim
8 words
The compound of claim 1 which is: L-Tyrosyl-glycyl-glycyl-L-phenylalanyl-L-leucyl-L-threonyl-L-seryl-L-glutamyl-L-lysyl-L-seryl-L-glutaminyl-L-threonyl-L-prolyl-L-leucyl-L-valyl-L-threonine.
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) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |