Patent US1135465A successfully refreshed from Google Patents.
US3694318A
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Substrate and method for alpha-amylase assay
Assignee: Individual
•
Filing: 1969-02-24
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Granted: 1972-09-26
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Expires: 1989-02-24
Abstract
Abstract A-AMYLASE ACTIVITY IS DETERMINED BY MEASURING THE COLOR CHANGE EFFECTED WHEN AN INSOLUBLE DYE-AMYLOSECOMPLEX IS ACTED UPON BY THE ENZYME.
Inventors
- 👤 Bernard Klein
- 👤 Ronald Loy Searcy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:50
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/04; C09B69/00; C09B69/02; C12; C12Q; C12Q1/00; C12Q1/34; C12Q1/40; G; G01; G01N; G01N2333/00; G01N2333/90; G01N2333/914; G01N2333/924
Claims Analysis
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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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |