US3438859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thymus extract
Assignee: RECHERCHE ET IND THERAPEUTIQUES RIT
•
Filing: 1964-10-27
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Granted: 1969-04-15
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Expires: 1984-10-27
Abstract
No abstract record available.
Inventors
- 👤 Pierre De Somer
- 👤 Pierre Denys
- 👤 Roger Leyten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:07
CPC Classifications
A; A61; A61K; A61K35/00; A61K35/12; A61K35/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A NONCELLULAR THYMUS EXTRACT CAPABLE OF INDUCING IMMUNOLOGICAL CAPACITY IN MICE, PREPARED BY ISOLATING THYMUS FROM A YOUNG CALF, INCUBATING SAID THYMUS AT ABOUT 37* C. FOR ABOUT 24-48 HOURS IN A TISSUE CULTURE MEDIUM, SAID MEDIUM COMPRISING:
Claim 2
Dependent Claim
38 words
A NONCELLULAR THYMUS EXTRACT CAPABLE OF INDUCING IMMUNOLOGICAL CAPACITY IN MICE, PREPARED BY ISOLATING THYMUS FROM A YOUNG CALF, INCUBATING SAID THYMUS AT ABOUT 37* C. FOR ABOUT 24-48 HOURS IN A TISSUE CULTURE MEDIUM, SAID MEDIUM COMPRISING:
References Cited (Backward Citations)
US3170839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |