US4234564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hepatitis B core antigen composition
Assignee: Merck and Co Inc
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Filing: 1977-12-19
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Granted: 1980-11-18
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Expires: 1997-12-19
Abstract
Abstract Compositions comprising HBsAg and a physiologically acceptable medium are useful as diagnostic and immunologic agents.
Inventors
- 👤 William J. McAleer
- 👤 William J. Miller
- 👤 Edward H. Wasmuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:24
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/005; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/576; G01N33/5761; G01N33/5762; A; A61; A61K; A61K39/00; C12; C12N; C12N2730/00; C12N2730/00011; C12N2730/10011; C12N2730/10111; C12N2730/10122; Y; Y10; Y10S; Y10S436/00; Y10S436/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A composition for use in a diagnostic assay or in the preparation of a therapeutic composition comprising hepatitis B core antigen in a carrier comprising bovine serum albumin containing Tris, MgCl 2 and NaCl having a pH of 7.6, the ingredients in said carrier being in proportions suitable for storing the composition in a liquid nitrogen freezer.
Claim 2
Dependent Claim
57 words
A composition for use in a diagnostic assay or in the preparation of a therapeutic composition comprising hepatitis B core antigen in a carrier comprising bovine serum albumin containing Tris, MgCl 2 and NaCl having a pH of 7.6, the ingredients in said carrier being in proportions suitable for storing the composition in a liquid nitrogen freezer.
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) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |