US3577527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neisseria meningitidis antigen
Assignee: United States Department of the Navy
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Filing: 1969-01-27
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Granted: 1971-05-04
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Expires: 1989-01-27
Abstract
Abstract AN ANTIGEN OF N. MENINGITIDIS WHICH HAS A HIGH DEGREE OF SENSITIVITY AND SPECIFICITY FOR DETERMINING THE PRESENCE OF ANTIBODIES IN BLOOD IS PROVIDED BY A METHOD IN WHICH N. MENINGITIDIS IS SUBJECTED TO A MILD ALKALINE HYDROLYSIS WITH PRODUCTION OF A LIPOPOLYSACCHARIDE ANTIGEN.
Inventors
- 👤 Earl A Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:47
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/195; C07K14/22; A; A61; A61K; A61K39/00; A61K39/02; A61K39/095
Claims Analysis
Total Claims: 0
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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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |