Patent US4336880A successfully refreshed from Google Patents.
US4336880A
Expired / Lapsed
US
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Preservation of urine specimens
Assignee: Becton Dickinson and Co
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Filing: 1980-11-24
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Granted: 1982-06-29
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Expires: 2000-11-24
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
2026-10-24 19:18
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/0045; A61B10/007; A01; A01N; A01N59/00; A01N59/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
88 words
A sample device for urine, comprising: an evacuated sample container for urine and a bacteriostatic liquid preservative for urine in said evacuated sample device, said 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 2
Dependent Claim
88 words
A sample device for urine, comprising: an evacuated sample container for urine and a bacteriostatic liquid preservative for urine in said evacuated sample device, said 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 3
Dependent Claim
10 words
The device of claim 1 wherein the liquid is water.
Claim 4
Dependent Claim
10 words
The device of claim 1 wherein the liquid is glycerine.
Claim 5
Dependent Claim
11 words
The device of claim 3. wherein the formate is sodium formate.
Claim 6
Dependent Claim
35 words
The device 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
26 words
The device of claim 5 wherein the evacuated container is evacuated to draw a 5.0 milliliter urine sample and contains 0.5 milliliters of the liquid preservative.
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) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |