A Novel Method for Technology Forecasting and Developing R&D Strategy of Building Integrated Photovoltaic Technology Industry

<table>Subpurpose matrix map of BIPV. <svg height="15.0875" id="M103" style="vertical-align:-2.3205pt" version="1.1" viewbox="0 0 36.487499 15.0875" width="36.487499" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,12.138)"><use xlink:href="#x1D44C"></use></g><g transform="matrix(.017,-0,0,-.017,11.605,12.138)"><use xlink:href="#x28"></use></g><g transform="matrix(.017,-0,0,-.017,17.486,12.138)"><use xlink:href="#x1D444"></use></g><g transform="matrix(.017,-0,0,-.017,30.541,12.138)"><use xlink:href="#x29"></use></g>
</svg>: patent number of years (in accordance with this technology and the effectiveness of patent). The pie chart represents the number of patents. Patent number of the more means larger the pie chart, and vice versa smaller.</table>

Mathematical Problems in Engineering

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Figure 12

Figure 12: A Novel Method for Technology Forecasting and Developing R&D Strategy of Building Integrated Photovoltaic Technology Industry 