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. 04, 2018
Filed:
Mar. 06, 2017
Kerdea Technologies, Inc., Greenville, NC (US);
Ken Ervin Fosaaen, Winterville, NC (US);
KERDEA TECHNOLOGIES, INC., Greenville, NC (US);
Abstract
An oxygen sensor that has both an n-type oxygen sensing portion comprising an n-type semiconductor layer and a p-type oxygen sensing portion comprising an p-type semiconductor layer. The n-type sensing portion and the p-type sensing portion share the common electrode. The n-type semiconductor layer and the p-type semiconductor layer attach directly to the common electrode, but are not in physical contact with each other such that a lateral gap exists between the n-type semiconductor layer and the p-type semiconductor layer. The air:fuel ratio for a combustion process may be determined, using the same oxygen sensor, across a range of air:fuel values in both the rich and lean regions; as such, the oxygen sensor may act as a wideband oxygen sensor.