US3853465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbidity reduction in serum and plasma samples using polyoxyethylated lauric acid compounds
Assignee: Bayer Corp
•
Filing: 1972-06-09
•
Granted: 1974-12-10
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Expires: 1992-06-09
Abstract
Abstract WHEREIN N IS AN INTEGER FROM 9 TO 20, UNTIL IT BECOMES OPTICALLY CLEAR. The reduction of turbidity in serum and plasma samples to be analyzed photometrically whereby the sample is mixed with a polyoxyethylated lauric acid compound of the formula:
Inventors
- 👤 R Rush
- 👤 D Vlastelica
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:21
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/40; G01N33/00; G01N33/48; G01N33/50; G01N1/4044; Y; Y10; Y10T; Y10T436/00; Y10T436/25
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
27 words
A METHOD OF REDUCING TURBIDITY IN A SERUM OR PLASMA SAMPLE FOR ANALYSIS WHICH COMPRISES ADMIXING SAID SAMPLE WITH A POLYOXYETHYLATED LAURIC ACID COMPOUND HAVING THE FORMULA
Claim 2
Independent Claim
27 words
A METHOD OF REDUCING TURBIDITY IN A SERUM OR PLASMA SAMPLE FOR ANALYSIS WHICH COMPRISES ADMIXING SAID SAMPLE WITH A POLYOXYETHYLATED LAURIC ACID COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
22 words
The method according to claim 1 wherein said admixing is carried out at a temperature of from about 20*C to about 60.5*C.
Claim 4
Dependent Claim
11 words
The method according to claim 2 wherein said temperature is 37*C.
Claim 5
Dependent Claim
18 words
The method according to claim 1 wherein said polyoxyethylated lauric acid compound is added as an aqueous solution.
Claim 6
Dependent Claim
18 words
The method according to claim 1 wherein said polyoxyethylated lauric acid compound is added as a saline solution.
Claim 7
Dependent Claim
28 words
The method according to claim 1 wherein said polyoxyethylated lauric acid compound is added as a buffered solution having a pH in the range of 3.5 to 11.
Claim 8
Dependent Claim
32 words
The method according to claim 1 wherein said polyoxyethylated lauric acid compound is present in the total admixture in an amount to provide from about 0.5 percent to about 20 percent v/v.
Claim 9
Dependent Claim
20 words
The method according to claim 7 wherein said polyoxyethylated lauric acid compound comprises 10 percent v/v of the total admixture.
Claim 10
Dependent Claim
13 words
The method according to claim 1 wherein said polyoxyethylated lauric acid compound is
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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |