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:
May. 03, 2005
Filed:
May. 31, 2002
Raymond G Davis, Seattle, WA (US);
Raymond G Davis, Seattle, WA (US);
Respironics, Inc., Murrysville, PA (US);
Abstract
A heater for a window of an optical gas sensor is provided. The heater may be positioned over a portion of the window or may form at least a portion of the window. Alternatively, the heater may be separate from the optical gas sensor and positionable (e.g., by a transducer) over the window either in contact therewith or in close proximity thereto. The heater may be substantially transparent to the relevant wavelengths of electromagnetic radiation that are used in optical (e.g., infrared or luminescence quenching) monitoring of respiratory gases, anesthetic agents, or the like. Alternatively, the heater may be configured so as to provide a substantially unobstructed optical pathway through the window. Optical gas sensors and complementary transducers that include the healer are also disclosed.