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Serving leading biopharmaceutical companies globally:

Daiichi Sankyo
Harvard Business School

Generated: December 13, 2017

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Details for Patent: 5,006,828

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Summary for Patent: 5,006,828

Title: Exhaust gas sensor and process for producing same
Abstract:A BaSnO.sub.3 exhaust gas sensor and a process for producing the same. Surface reformation of sensor electrodes is done for preventing the deterioration of the sensor response and the corrosion of the electrodes by the Sn in the BaSnO.sub.3. After depositing an oxide film such as La.sub.2 Ti.sub.2 O.sub.7 or MgO on the surface of the electrodes, the electrodes are embedded in BaSnO.sub.3, and the BaSnO.sub.3 is sintered. Through the sintering process, the film of La.sub.2 Ti.sub.2 O.sub.7 or MgO is converted to a conductive complex oxide film by reacting with BaSnO.sub.3. The resultant film contains Ba and Sn elements. CaSnO.sub.3 and SrSnO.sub.3, which are homologous compounds of BaSnO.sub.3, are usable in place of BaSnO.sub.3.
Inventor(s): Yutaka; Yoshida (Osaka, JP), Kazuo; Onaga (Osaka, JP), Mariko; Hanada (Nara, JP), Kazunari; Komatsu (Hiroshima, JP)
Assignee: Figaro Engineering, Inc. (Osaka, JP) Mazda Motor Corporation (Osaka, JP)
Application Number:07/376,044
Patent Claim Types:
see list of patent claims
Compound; Device;

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Foreign Priority and PCT Information for Patent: 5,006,828

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan63-175589Jul 14, 1988

International Patent Family for Patent: 5,006,828

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Germany3922989► Subscribe
JapanH02193053► Subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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Serving leading biopharmaceutical companies globally:

Farmers Insurance
Cantor Fitzgerald
Daiichi Sankyo
Johnson and Johnson

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