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Akihiro Otsuka patents

Recent bibliographic sampling of Akihiro Otsuka patents listed/published in the public domain by the USPTO (USPTO Patent Application #,Title):



06/16/11 - 20110142614 - Counter-rotating axial flow fan
A counter-rotating axial flow fan with reduced noise at the target operating point achieved without modifying a front impeller, a rear impeller, or a middle stationary portion is provided. An annular rib including a projecting surface for generating turbulent flow is formed on an inner wall portion of a casing...
Inventors: Chisachi Kato, Atsushi Yamaguchi, Akira Ueda, Kazuhiro Nitta, Akihiro Otsuka, Tadashi Katsui, Masahiro Suzuki, Yoshihiko Aizawa, Honami Oosawa (Sanyo Denki Co., Ltd.)

06/16/11 - 20110142612 - Counter-rotating axial flow fan
A counter-rotating axial flow fan in which the shape of stationary blades of a middle stationary portion is optimized to reduce noise is provided. Defining the maximum axial chord length of front blades as Lf, the maximum axial chord length of rear blades as Lr, and the maximum axial chord...
Inventors: Chisachi Kato, Atsushi Yamaguchi, Akira Ueda, Kazuhiro Nitta, Akihiro Otsuka, Tadashi Katsui, Masahiro Suzuki, Yoshihiko Aizawa, Honami Oosawa (Sanyo Denki Co., Ltd.)

06/16/11 - 20110142611 - Counter-rotating axial flow fan
A counter-rotating axial flow fan with improved characteristics and reduced noise compared to the related art can be provided. Defining the number of front blades as N, the number of stationary blades as M, and the number of rear blades as P, and defining the maximum axial chord length of...
Inventors: Chisachi Kato, Atsushi Yamaguchi, Akira Ueda, Kazuhiro Nitta, Akihiro Otsuka, Tadashi Katsui, Masahiro Suzuki, Yoshihiko Aizawa, Honami Oosawa (Sanyo Denki Co., Ltd.)

Sanyo Denki Co., Ltd.

Archived*
(*May have duplicates - we are upgrading our archive.)

20110142611 - Counter-rotating axial flow fan
20110142612 - Counter-rotating axial flow fan
20110142614 - Counter-rotating axial flow fan


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The bibliographic references displayed about Akihiro Otsuka's patents are for a recent sample of Akihiro Otsuka's publicly published patent applications. The inventor/author may have additional bibliographic citations listed at the USPTO.gov. FreshPatents.com is not associated or affiliated in any way with the author/inventor or the United States Patent/Trademark Office but is providing this non-comprehensive sample listing for educational and research purposes using public bibliographic data published and disseminated from the United States Patent/Trademark Office public datafeed. This information is also available for free on the USPTO.gov website. If Akihiro Otsuka filed recent patent applications under another name, spelling or location then those applications could be listed on an alternate page. If no bibliographic references are listed here, it is possible there are no recent filings or there is a technical issue with the listing--in that case, we recommend doing a search on the USPTO.gov website.

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