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Koken Ltd patents

Recent patent applications related to Koken Ltd. Koken Ltd is listed as an Agent/Assignee. Note: Koken Ltd may have other listings under different names/spellings. We're not affiliated with Koken Ltd, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "K" | Koken Ltd-related inventors

Protective mask

Provided is a protective mask that is highly comfortable to wear. A protective mask includes: a face piece; an eyepiece attached to the face piece; and a lip extending from an outer circumference of the face piece in a direction crossing the face piece, in which at least a part of the lip includes a face contact portion capable of coming into contact with a face of a wearer, the face contact portion is formed from a silicone rubber, the face piece and the lip are formed from a gas impermeable material except for the face contact portion, and the gas impermeable material and the silicone rubber are joined together along the boundary between the gas impermeable material and the silicone rubber.. ... Koken Ltd

Air blowing device

An air blowing device adapted to be used in such a manner that at least two of the devices are horizontally and/or vertically aligned with each other, thereby to obtain a uniform flow of air in the downstream direction from device to device. An air-permeable front surface (11f) is formed to the blowing device (1) at the downstream side of a rectifier mechanism, and side surface sections (11a) which extend in the upstream direction of the device (1) are formed at both edges of the air-permeable front surface (11f). ... Koken Ltd

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This listing is an abstract for educational and research purposes is only meant as a recent sample of applications filed, not a comprehensive history. is not affiliated or associated with Koken Ltd in any way and there may be associated servicemarks. This data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Koken Ltd with additional patents listed. Browse our Agent directory for other possible listings. Page by