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:
Sep. 10, 1991
Filed:
Jan. 24, 1991
Joseph P Weller, Lake Jackson, TX (US);
David P Denton, Richwood, TX (US);
Sandra V Lange, Lake Jackson, TX (US);
Chester R Norman, Lake Jackson, TX (US);
Mary A Leugers, Midland, MI (US);
Stuart Farquharson, Surfside, TX (US);
Jean P Chauvel, Jr, Lake Jackson, TX (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
A photometric probe or a photometric cell having separate windows and a metallic probe body or cell body. The window(s) are sealed to the probe or cell body by brazed or frit seals which are less likely to leak after extended use in high temperature and/or high pressure industrial applications than probes and cells having gasket sealed windows. The windows can be made of sapphire, cubic zirconia, diamond, ruby, glass or quartz and, in the case of the probe, can be in the shape of an Attenuated Total Reflectance prism. The probe or cell body can be Kovar alloy or stainless steel.