Patent US4258032A successfully refreshed from Google Patents.
US4258032A
Expired / Lapsed
US
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Preservation of urine specimens
Assignee: Becton Dickinson and Co
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Filing: 1979-01-15
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Granted: 1981-03-24
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Expires: 1999-01-15
Abstract
Abstract A liquid urine preservative comprised of boric acid and alkali formate dissolved in a bacteriostatic liquid, such as water or glycerine. The preservative may be included in an evacuated container for a urine sample to facilitate taking of correct sample amounts.
Inventors
- 👤 Jack J. Mehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:22
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/0045; A61B10/007; A01; A01N; A01N59/00; A01N59/14
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
67 words
A bacteriostatic liquid preservative for urine, comprising: boric acid, alkali formate and a liquid selected from the group consisting of water and glycerine in amounts effective to provide a liquid preservative for a urine sample, said boric acid and alkali formate being dissolved in the liquid to provide from 0.9 to 1.2% of boric acid and from 0.5 to 0.6% of alkali formate in a urine sample.
Claim 2
Dependent Claim
67 words
A bacteriostatic liquid preservative for urine, comprising: boric acid, alkali formate and a liquid selected from the group consisting of water and glycerine in amounts effective to provide a liquid preservative for a urine sample, said boric acid and alkali formate being dissolved in the liquid to provide from 0.9 to 1.2% of boric acid and from 0.5 to 0.6% of alkali formate in a urine sample.
Claim 3
Dependent Claim
10 words
The preservative of claim 1 wherein the liquid is water.
Claim 4
Dependent Claim
10 words
The preservative of claim 1 wherein the liquid is glycerine.
Claim 5
Dependent Claim
11 words
The preservative of claim 3 wherein the formate is sodium formate.
Claim 6
Dependent Claim
35 words
The preservative of claim 4 wherein the boric acid and formate are present in the glycerine in an amount to provide about 1% boric acid, 0.5% sodium formate and 10% glycerine in a urine sample.
Claim 7
Dependent Claim
11 words
The preservative of claim 2 wherein the formate is sodium formate.
Claim 8
Independent Claim
78 words
A method for preserving a urine sample, comprising: adding to the urine sample a bacteriostatic liquid preservative comprising boric acid, alkali formate and a liquid selected from the group consisting of water and glycerine in amounts effective to provide a liquid preservative for a urine sample, said boric acid and alkali formate being dissolved in the liquid to provide from 0.9 to 1.2% of boric acid and from 0.5 to 0.6% of alkali formate in a urine sample.
Claim 9
Independent Claim
78 words
A method for preserving a urine sample, comprising: adding to the urine sample a bacteriostatic liquid preservative comprising boric acid, alkali formate and a liquid selected from the group consisting of water and glycerine in amounts effective to provide a liquid preservative for a urine sample, said boric acid and alkali formate being dissolved in the liquid to provide from 0.9 to 1.2% of boric acid and from 0.5 to 0.6% of alkali formate in a urine sample.
Claim 10
Dependent Claim
11 words
The method of claim 7 wherein the bacteriostatic liquid is glycerine.
Claim 11
Dependent Claim
12 words
The method of claim 8 wherein the alkali formate is sodium formate.
Claim 12
Dependent Claim
26 words
The method of claim 9 wherein the liquid preservative is added to provide 1% boric acid, 0.5% sodium formate and 10% glycerine in the urine sample.
Claim 13
Dependent Claim
18 words
The method of claim 10 wherein 0.5 ml of liquid preservative is added to 5.0 ml of urine.
Claim 14
Dependent Claim
11 words
The method of claim 7 wherein the bacteriostatic liquid is water.
Claim 15
Dependent Claim
69 words
A bacteriostatic liquid preservative for urine consisting essentially of: boric acid, alkali formate and a liquid selected from the group consisting of water and glycerine in amounts effective to provide a liquid preservative for a urine sample, said boric acid and alkali formate being dissolved in the liquid to provide from 0.9 to 1.2% of boric acid and from 0.5 to 0.6% of alkali formate in a urine sample.
Claim 16
Dependent Claim
69 words
A bacteriostatic liquid preservative for urine consisting essentially of: boric acid, alkali formate and a liquid selected from the group consisting of water and glycerine in amounts effective to provide a liquid preservative for a urine sample, said boric acid and alkali formate being dissolved in the liquid to provide from 0.9 to 1.2% of boric acid and from 0.5 to 0.6% of alkali formate in a urine sample.
Claim 17
Dependent Claim
10 words
The preservative of claim 13 wherein the liquid is water.
Claim 18
Dependent Claim
10 words
The preservative of claim 13 wherein the liquid is glycerine.
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) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |