Wireless power transmission: a preliminary probe into WPT-related patents and standards of China, the United States and Japan
(China IP)
Updated: 2013-09-13

Wireless power transmission: a preliminary probe into WPT-related patents and standards of China, the United States and Japan

Exhibit 4 WPT-related patent application in China annually

Wireless power transmission: a preliminary probe into WPT-related patents and standards of China, the United States and Japan

Exhibit 5 Analysis of major applicants in China

Wireless power transmission: a preliminary probe into WPT-related patents and standards of China, the United States and Japan

Exhibit 6 Chinese WPT-related patent categories

Analysis of WPT-related patent applications in Japan

Among the 79 WPT-related patent applications filed in Japan, the applicant that has the highest overall strength is Panasonic Corporation, mostly attributable to the merger between Panasonic Electric Works Co., Ltd. and SANYO Electric Co., Ltd.. Panasonic Electric Works began to employ WPT technology in its electric toothbrushes and shavers since 1980s, and SANYO Electric developed its activities as one of the core members of the WPC since the latter’s establishment at the end of 2008.

The search result indicates that the WPT-related patent applications are still in their beginning stage in Japan, with the H02J directory being the No.1 hotspot technology. TDK Corporation, a company which can never be underestimated, is deploying its WPT-related patents on a large scale.

Toyota, which ranked fourth place in Japan, is also of interest. Most of its patents are on magnetic resonance WPT, while other companies are leading mostly because of their patents in electromagnetic induction WPT. Moreover, although many of its patents are filed jointly with Toyota Industries, it also has separate applications that are highly valued.

Wireless power transmission: a preliminary probe into WPT-related patents and standards of China, the United States and Japan

Exhibit 7 WPT-related patent ranking (the numbers in the brackets are rankings of patent quality)



The J-Innovation

Steve Jobs died the month that the latest Nobel Prize winners were announced. The coincidence lends itself to speculation about inevitability.

Volunteer team bails out busy court

Government supports unique intellectual property fund

IP service providers showcase products

Experts call for standardization of IP services