The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 1996
Filed:
Jul. 31, 1995
Anthony J Schleisman, Plano, TX (US);
David S Bollinger, Grapevine, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An anhydrous ammonia gas sampler and concentration system (10) and method is disclosed that facilitates the collection and evaporation of large volumes of anhydrous ammonia in a safe, clean environment. The ammonia is collected and frozen in two containers (12, 14) connected in series and immersed in a liquid nitrogen bath (42). The frozen ammonia is evaporated through a very slow evaporation process after the containers are removed from the liquid nitrogen bath. The resultant contaminant concentrate provides the means by which a more accurate calculation of the percentage of contaminants in an ammonia sample may be made.