Patent US5137692A successfully refreshed from Google Patents.
US5137692A
Expired / Lapsed
US
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Nitrogen test kit for physical training
Assignee: Individual
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Filing: 1990-12-11
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Granted: 1992-08-11
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Expires: 2010-12-11
Abstract
Abstract A nitrogen test kit for determining the relative level of nitrogen of a user who is involved in a health program where diet and exercise are monitored and adjusted for optimizing physical development, the kit including a plastic stick having a reagent zone on which is included a reactant such as urease, and a pH indicator such as bromthymol blue, used in conjunction with color chart blocks representing a range of urea nitrogen concentrations, wherein the user's urine nitrogen content can be determined by comparing the altered color of the reagent zone of an exposed test strip to the color chart and compared with a personal baseline level, developed from a number of tests under controlled conditions, for determining the present protein nitrogen turnover and approximate balance.
Inventors
- 👤 Robert Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:32
CPC Classifications
A; A61; A61B; A61B5/00; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/62; Y; Y10; Y10T; Y10T436/00; Y10T436/17; Y10T436/171538
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
137 words
A non-invasive nitrogen test kit for determining the approximate nitrogen turnover and balance of a trainee comprising: a plurality of detection wands each wand having a portion which comprises a reagent area having chemical means that reacts with urine and on reaction with a specimen of the trainee's urine provides a visual indication of the concentration of nitrogen in the urine; comparative means for gauging the relative nitrogen level in the trainee from test of the specimen of the trainee's urine; recording means for recording the relative nitrogen level in the trainee's urine from a plurality of tests of specimens of the trainee's urine taken at different times during a controlled regimen for establishing a trainee baseline; and means for comparing nitrogen level during a training regimen with the baseline to determine approximate nitrogen turnover and balance.
Claim 2
Dependent Claim
137 words
A non-invasive nitrogen test kit for determining the approximate nitrogen turnover and balance of a trainee comprising: a plurality of detection wands each wand having a portion which comprises a reagent area having chemical means that reacts with urine and on reaction with a specimen of the trainee's urine provides a visual indication of the concentration of nitrogen in the urine; comparative means for gauging the relative nitrogen level in the trainee from test of the specimen of the trainee's urine; recording means for recording the relative nitrogen level in the trainee's urine from a plurality of tests of specimens of the trainee's urine taken at different times during a controlled regimen for establishing a trainee baseline; and means for comparing nitrogen level during a training regimen with the baseline to determine approximate nitrogen turnover and balance.
Claim 3
Dependent Claim
77 words
The non-invasive kit of claim 1 wherein the comparative means includes a color comparison chart with a shading gradient having a plurality of comparative shades, and indicion for gauging the level of nitrogen in the trainee's urine by comparing the reacted reagent area of a urine test wand with the shading gradient for matching the shade of the reacted reagent area with the shade of the gradient and determining the level of nitrogen in the trainee's urine.
Claim 4
Dependent Claim
32 words
The non-invasive kit of claim 1 wherein the recording means includes means for averaging the nitrogen level from a plurality of tests to establish an average nitrogen level useable as a baseline.
Claim 5
Dependent Claim
30 words
The non-invasive kit of claim 1 wherein the means for comparing nitrogen level during a training regimen with the baseline includes conversion means to establish excess or deficiency in protein.
Claim 6
Dependent Claim
32 words
The non-invasive kit of claim 2 wherein the recording means to establish a trainee baseline comprises a use chart having means for recording indicia of nitrogen level from the plurality of tests.
References Cited (Backward Citations)
US3531254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-11 | 1996-02-10 | 1996-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-11 | 2000-02-10 | 2000-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-11 | 2004-02-10 | 2004-08-11 | $7700.00 | Window Closed / Lapsed |