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:
Feb. 21, 2006
Filed:
Sep. 26, 2003
Masayuki Suzuki, Tokyo, JP;
Hideo Ishizu, Tokyo, JP;
Masayuki Suzuki, Tokyo, JP;
Hideo Ishizu, Tokyo, JP;
Kokusai Electric Semiconductor Service Inc., Tokyo, JP;
Abstract
A heater inspection apparatus including an applying unit, a current detector, a voltage detector, a temperature detector, a memory, a first calculating unit, a second calculating unit and a finding unit is provided. The applying unit applies an electrical power to a heater based on an AC power source. The current detector detects a current flowing through the heater. The voltage detector detects a voltage applied to the heater. The temperature detector detects a temperature of the heater. A temperature coefficient of resistance is stored in advance on the memory. The first calculating unit and the second calculating unit respectively calculate a resistance of the heater at an inspection time and a reference time. The finding unit finds a deterioration degree of the heater based on results of the first and second calculating units.