Nitrogen test kit for physical training
Patent 5137692 Issued on August 11, 1992. Estimated Expiration Date: 
December 11, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 11, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References3531254 InventorApplicationNo. 625866 filed on 12/11/1990US Classes:422/61, Test package or kit422/56, Having reagent in absorbent or bibulous substrate422/57, Having coated reagent422/58, In holder or container having special form422/82.05, Measuring optical property by using ultraviolet, infrared, or visible light435/12, Involving urea or urease436/108Urea or blood urea nitrogenExaminersPrimary: Housel, James C.Assistant: Redding, David A. Attorney, Agent or FirmInternational ClassesG01N 031/04G01N 033/16 G01N 021/06 AbstractA 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.Other References
Field of SearchStructured visual or optical indicator, per seHaving reagent in absorbent or bibulous substrate Having coated reagent In holder or container having special form Test package or kit Means for analyzing liquid or solid sample Measuring optical property by using ultraviolet, infrared, or visible light NITROGEN CONTAINING N-Nitroso containing (e.g., nitrosamine, etc.) Urea or blood urea nitrogen Amine and quaternary ammonium Tertiary amine Ammonia Carbonyl, ether, aldehyde or ketone containing With claimed manipulation of container to effect reaction or use of container of claimed optical structure Automated or kit Involving uric acid Involving urea or urease Quantitative determination |
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