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. 28, 2025
Filed:
Feb. 16, 2023
Dräger Safety Ag & Co. Kgaa, Lübeck, DE;
Tim Blöcker, Lübeck, DE;
Lucas Pfennig, Lübeck, DE;
DRÄGER SAFETY AG & CO. KGAA, Lübeck, DE;
Abstract
A photo-ionization detector () and a process detect an ionizable substance in a gas (G). At least two measuring cells () are mounted on a measuring cell carrier (). A radiation source () emits ionizing electromagnetic radiation towards the measuring cell carrier (). The gas (G) reaches at least one measuring cell (). Ionization of the gas causes a measurable electrical property of the measuring cell () to be changed. Depending on the electrical property, the measuring cell () generates a signal. This signal correlates with the presence and optionally the concentration of ionizable substance in the gas (G). Preferably, the measuring cell carrier () can be rotated relative to the radiation source ().