Patent US3841834A successfully refreshed from Google Patents.
US3841834A
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Automatic protein analysis system and method
Assignee: Utah State University Foundation
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Filing: 1973-06-26
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Granted: 1974-10-15
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Expires: 1993-06-26
Abstract
Abstract Method for automatically analyzing the protein content of a milk sample by utilizing the milk sample effluent from a conventional automatic milk butterfat testing apparatus.
Inventors
- 👤 N Gandhi
- 👤 G Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:31
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/02; G01N33/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
95 words
A METHOD FOR DETERMINING THE PROTEIN CONTENT OF MILK SAMPLE COMPRISING THE STEPS OF: A. SAMPLING AN EFFLUENT STREAM OF AN AUTOMATIC MILK BUTTERFAT ANALYZING SYSTEM WHEREIN SAID SAMPLE COMPRISES A MIXTURE OF MILK AND A FIRST REAGENT, SAID FIRST REAGENT COMPRISING ETHYLENEDINITRILO TETRAACETIC ACID, TETRASODIUM SALT, SODIUM HYDROXIDE, AND WATER, B. MIXING SAID SAMPLE WITH SECOND REAGENT COMPRISING ACETIC ACID AND A WETTING AGENT WHICH DOES NOT INTERFERE WITH THE ABSORBANCY CHARACTERISTICS OF ULTRAVIOLET LIGHT OF A WAVELENGTH OF ABOUT 280 NANOMETERS; AND C. MEASURING THE ULTRAVIOLET LIGHT ABSORBANCE CHARACTERISTIC OF SAID MIXED SAMPLE.
Claim 2
Independent Claim
95 words
A METHOD FOR DETERMINING THE PROTEIN CONTENT OF MILK SAMPLE COMPRISING THE STEPS OF: A. SAMPLING AN EFFLUENT STREAM OF AN AUTOMATIC MILK BUTTERFAT ANALYZING SYSTEM WHEREIN SAID SAMPLE COMPRISES A MIXTURE OF MILK AND A FIRST REAGENT, SAID FIRST REAGENT COMPRISING ETHYLENEDINITRILO TETRAACETIC ACID, TETRASODIUM SALT, SODIUM HYDROXIDE, AND WATER, B. MIXING SAID SAMPLE WITH SECOND REAGENT COMPRISING ACETIC ACID AND A WETTING AGENT WHICH DOES NOT INTERFERE WITH THE ABSORBANCY CHARACTERISTICS OF ULTRAVIOLET LIGHT OF A WAVELENGTH OF ABOUT 280 NANOMETERS; AND C. MEASURING THE ULTRAVIOLET LIGHT ABSORBANCE CHARACTERISTIC OF SAID MIXED SAMPLE.
Claim 3
Dependent Claim
50 words
A method for determining the protein content of a milk sample as defined in claim 1 wherein said first reagent is formulated on the basis of 45 grams of ethylenedinitrilo tetraacetic acid, tetrasodium salt and 6 grams sodium hydroxide in sufficient water to form a final mixture of 10 liters.
Claim 4
Dependent Claim
37 words
A method for determining the protein content of a milk sample as defined in claim 1 wherein said second reagent is formulated on the basis of 95 percent acetic acid and 5 percent of said wetting agent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |