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:
Apr. 28, 1998
Filed:
Feb. 28, 1996
Isao Suzuki, Utsunomiya-shi, Tochigi-ken, JP;
Other;
Abstract
A method and an apparatus for adsorption measurement suitable for a small-surface area determination are disclosed. The apparatus includes (a) a temperature-compensated constant-volume adsorption apparatus including: a pair of a reference buret and a sample buret of almost equal shapes and volumes disposed in a lateral symmetry, a pair of a reference adsorption cell and a sample adsorption cell of almost equal shapes and volumes disposed in a lateral symmetry and connected to the reference and sample burets, respectively, the sample cell containing a sample for adsorption measurement, an adsorbate gas supply connected to the reference and sample burets so as to supply an adsorbate gas to the burets, and a pressure gage capable of measuring pressures within the reference and sample burets. The measurement includes the steps of (b) introducing an adsorbate gas into the burets, (c) causing the adsorbate gas in the burets to expand into the respective adsorption cells, and (d) determining an adsorbed amount of the adsorbate gas by the sample cell based on a pressure difference between the burets while compensating for an adsorbed amount by the reference adsorption cell.