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:
Mar. 26, 1991
Filed:
Dec. 29, 1989
Peter Datwyler, Oberwil, CH;
Aldo Giorgetti, Basel, CH;
Peter E Jordi, Basel, CH;
Nico Pericles, Herznach, CH;
Abstract
Optical high-pressure transmission cells of the type used, for example, for SFC-FTIR, comprise a pressure-resistant housing part with two intersecting bores, one of them forming a fluid passage and the other one forming a light transmission path. The bore forming the light transmission path is provided with inserted windows. There is a demand in infrared spectroscopy, for supercritical fluid chromatography, for particularly pressure-resistant cells of simple design, which demand has not been satisfied heretofore. In the case of the proposed measuring cell, the windows are designed as stepped windows having central cylindrical neck portions engaging the bore serving as a light transmission path so that the chamber is delimited by end faces of the neck portions. Sealing is effected by O-rings.