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:
Apr. 10, 2007
Filed:
Feb. 24, 2005
Applicants:
John P. Custer, Stow, OH (US);
Kenneth L. Kessler, Streetsboro, OH (US);
Reuben Harel, Solon, OH (US);
John L. Creed, Girard, OH (US);
Inventors:
John P. Custer, Stow, OH (US);
Kenneth L. Kessler, Streetsboro, OH (US);
Reuben Harel, Solon, OH (US);
John L. Creed, Girard, OH (US);
Assignee:
Hunter Manufacturing Co., Solon, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 37/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A residual life indicating system for a filter includes a main filter, a sampling filter, and a sensor. Both the main filter and the sampling filter receive an ambient gas meant to be filtered. The sensor connects to the sampling filter and senses the presence of a predetermined chemical in the gas that has been filtered by the sampling filter.