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. 14, 2010
Filed:
Mar. 02, 2006
Applicants:
Daniel Wetzig, Cologne, DE;
Ludolf Gerdau, Elsdorf, DE;
Inventors:
Daniel Wetzig, Cologne, DE;
Ludolf Gerdau, Elsdorf, DE;
Assignee:
Inficon GmbH, Cologne, DE;
Primary Examiner:
Int. Cl.
CPC ...
G01L 21/30 (2006.01); G01N 27/62 (2006.01);
U.S. Cl.
CPC ...
Abstract
A cold cathode pressure sensor has gastight housing, an anode and a cathode arranged in the housing, and a radiation source directed to the cathode for igniting a cold cathode discharge. The housing has a test gas inlet and is at least partly made of glass. The radiation source is arranged outside the housing and irradiates the cathode through the housing glass. The radiation source substantially emits a radiation of a wavelength of more than 400 nm and less than 1,400 nm.