Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2004.05a
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- Pages.156-158
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- 2004
Patent Survey on GPS
GPS 특허동향
- Published : 2004.05.22
Abstract
The patent analysis of GPS technologies is performed by using a patent mapping method. The number of U.S.,Japanese and Korean patent applications are 1,819, 1,715 and 1,277 cases respectively. U.S and Japanese patents are mainly composed of hardware technologies. But, Korean patents are mainly composed of service technologies.