US3703441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diagnostic reagents for the determination of gamma-glutamyl transpeptidase in human serum
Assignee: Sankyo Co Ltd
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Filing: 1970-06-17
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Granted: 1972-11-21
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Expires: 1990-06-17
Abstract
Abstract DIAGNOSTIC REAGENTS FOR THE DETERMINATION OF Y-GLUTAMYL TRANSPEPTIDASE IN HUMAN SERUM WHICH COMPRISES (1) Y-LGLUTAMIC ACID P-NITROANILIDE, (2) ONE OR MORE SURFACE ACTIVE AGENTS SELECTED FROM THE GROUP CONSISTING OF AMPHOTERIC SURFACE ACTIVE AGENTS AND NON-IONIC SURFACE ACTIVE AGENTS AND (3) A BUFFER SOLUTION SELECTED FROM THE GROUP CONSISTING OF COLLIDINE-, BORIC ACID-, VERONAL (5,5-DIETHYLBARBITURIC ACID)- AND AMMONIA-BUFFER SOLUTIONS. THE REAGENTS OF THIS INVENTION ARE VERY STABLE AT A HIGH CONCENTRATION AND PRACTICALLY USEFUL FOR THE DIAGNOSIS OF VARIOUS TYPES OF LIVER DISEASES, E.G. CANCER OF LIVER, OBSTRUCTIVE LIVER DISEASES AND THE LIKE.
Inventors
- 👤 Kazuo Nakanishi
- 👤 Shuzo Takei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:26
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/053; G10H1/055; G10H1/0555; C; C12; C12Q; C12Q1/00; C12Q1/48
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |