Patent US2770601A successfully refreshed from Google Patents.
US2770601A
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Method of preparing bilirubin standardized reagents
Assignee: A S ALOE Co
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Filing: 1953-10-15
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Granted: 1956-11-13
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Expires: 1973-10-15
Abstract
No abstract record available.
Inventors
- 👤 Theodore E Weichselbaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:57
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/96; G01N33/72; Y; Y10; Y10T; Y10T436/00; Y10T436/10; Y10T436/103332; Y10T436/105831
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
THE METHOD OF MAKING BILIRUBIN STANDARDIZED REAGENTS FOR USE IN COLORIMETRY AND IN CHECKING THE ACCURACY OF SPECTROPHOTOMETRIC CALIBRATION TABLES WHICH METHOD COMPRISES PROVODING A PREDETERMINED QUANTITY OF BILIRUBIN, DISSOLVING THE MEASURED QUANTITY OF BILIRUBIN IN A PREDETERMINED VOLUME OF CHLOROFORM TO PROVIDE A SOLUTION OF PREDETERMINED CONCENTRATION, PLACING A MEASURED QUANTITY OF SOLUTION WITHIN A GLASS CONTAINER, EVAPORATING THE LIQUID MATERIAL IN THE CONTAINER FOR REDUCTION THEREOF TO A DRY, SOLID STATE, THEN SEALING THE CONTAINER IN AN INERT ATMOSPHERE, OPENING THE CONTAINER AT THE TIME OF PREPARATION OF THE STANDARD, DISSOLVING THE DRY REAGENT IN SUCH AMOUNT OF CHLOROFORM AS REQUISITE FOR COMPLETE DISSOLUTION OF THE DRIED MATERIAL, THEN QUANTITATIVELY TRANSFERRING SAME BY METHYL ALCOHOL TO A FLASK HAVING A VOLUME-INDICATING MARK, AND THEN MAKING UP TO THE MARK WITH METHYL ALCOHOL TO CONSTITUTE A STANDARD OF PREDETERMINED CONCENTRATION.
Claim 2
Independent Claim
141 words
THE METHOD OF MAKING BILIRUBIN STANDARDIZED REAGENTS FOR USE IN COLORIMETRY AND IN CHECKING THE ACCURACY OF SPECTROPHOTOMETRIC CALIBRATION TABLES WHICH METHOD COMPRISES PROVODING A PREDETERMINED QUANTITY OF BILIRUBIN, DISSOLVING THE MEASURED QUANTITY OF BILIRUBIN IN A PREDETERMINED VOLUME OF CHLOROFORM TO PROVIDE A SOLUTION OF PREDETERMINED CONCENTRATION, PLACING A MEASURED QUANTITY OF SOLUTION WITHIN A GLASS CONTAINER, EVAPORATING THE LIQUID MATERIAL IN THE CONTAINER FOR REDUCTION THEREOF TO A DRY, SOLID STATE, THEN SEALING THE CONTAINER IN AN INERT ATMOSPHERE, OPENING THE CONTAINER AT THE TIME OF PREPARATION OF THE STANDARD, DISSOLVING THE DRY REAGENT IN SUCH AMOUNT OF CHLOROFORM AS REQUISITE FOR COMPLETE DISSOLUTION OF THE DRIED MATERIAL, THEN QUANTITATIVELY TRANSFERRING SAME BY METHYL ALCOHOL TO A FLASK HAVING A VOLUME-INDICATING MARK, AND THEN MAKING UP TO THE MARK WITH METHYL ALCOHOL TO CONSTITUTE A STANDARD OF PREDETERMINED CONCENTRATION.
References Cited (Backward Citations)
US2085391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |