Hiromichi Sugie, Tsuyoshi Minari, Yasunari Arai, Yukihisa Horikoh, Kouji Kume, Hirotsugu Kojima: Filter element for air cleaner. Toyoda Boshoku Corporation & Denso Corporation, Palmatier Sjoquist Voigt & Christensen P A, December 22, 1998: US05851250 (13 worldwide citation)

A filter element for an air cleaner including a filter medium which has a plurality of basic filter units and is integrally formed of a porous sintered material produced by sintering powdered synthetic resin.

Hiromichi Sugie, Hajime Akado, Akira Yamashita, Yasuhiko Nakamura: Structure for supporting air filter. Nippondenso, Cushman Darby & Cushman, November 17, 1981: US04300928 (11 worldwide citation)

A structure for supporting an air filter on a carburetor, the air filter having a casing accommodating an air filtration element and a cap adapted to close the upper opening of the casing, the cap being adapted to be centered and fixed to the carburetor by a cooperation of a center bolt projecting u ...

Hiromichi Sugie, Hajime Akado, Akira Yamashita: Air cleaner of internal combustion engines. Nippondenso, Cushman Darby & Cushman, June 16, 1981: US04273564 (10 worldwide citation)

An air cleaner of an internal combustion engine including an air inlet conduit connected to a main body containing a filter element and composed of upper and lower longitudinally extending conduit portions formed of a synthetic resin and connected together. The lower conduit portion is formed integr ...