5. T. Tokuyama, R. Hiranabe, H. Tomioka, M. Kurihara, M. Ueda, T. Higashihara, M. Aiba, “Semi–permeable Membrane and Method for Manufacturing Same, and Concentration–difference Power–generating Method Using Semi–permeable Membrane”, Toray Industries, Inc., Japan, WO/2013/172330 (2013).

4. S. Nakazawa, M. Ueda, T. Higashihara, N. Fukuzaki, ”2,2–Difluoro–2–phosphonoethyl (meth)acrylate Polymer Having High Proton Conductivity, Electrolyte Film Fuel Cell, and Production Method Thereof”, トヨタ自動車株式会社, WO/2012/052815 (2012).

3. M. Boden, M. C. Schwarz, F. H. Strickler, R. Faust, U. Ojha, T. Higashihara, ”Copolymers Having Polyisobutylene and Biodegradable Polymer Segments”, Boston Scientific Scimed, Inc., WO/2010/078451 (2010).

2. R. Faust, T. Higashihara, ”Organometallic–polyisomonoolefin Block Copolymers for Medical Use”, University of Massachusetts Lowell, WO/2008/127695 (2008).

1. R. Faust, T. Higashihara, D. Feng, ”Method to Prepare Block Copolymers by the Combination of Cationic and Anionic Polymerizations”, University of Massachusetts Lowell, WO/2007/117566 (2007).