The SPST Board of Directors, as the Society’s principal governing body, is responsible for overseeing all Society affairs. The Board consists of six members.

Takeo Watanabe received his Ph.D. from Osaka City University in 1990. He is now the Principal Investigator of Next Generation EUVL Research Endowed Chair, the Project Professor of Laboratory of Advanced Science and Technology for Industry (LASTI), University of Hyogo. Previously, he was assigned as a special advisor to the president, director of the Center for EUVL, and Dean of LASTI, at the University of Hyogo. He is an expert of the EUV lithographic technology, including optics, exposure tool, mask, resist, and pellicle etc., and contributes with EUVL and next generation EUVL fundamental researches. He has authored over 270 technical papers, and he is the president of the International Conference of Photopolymer Science and Technology (ICPST). He is also Conference Chair of the International Conference of Photomask Japan (PMJ). He is a program committee member of the International Conference on Electron, Ion, and Photon Beam Technology and Nanofabrication (EIPBN). Furthermore, he is a committee member of lithography of IRDS. 

Teruaki Hayakawa is a Professor in the Department of Materials Science and Engineering at the Institute of Science Tokyo. He received his B.Sc. (1995), M.S. (1997), and Ph.D. (2000) degrees from Yamagata University, specializing in polymer materials science and engineering. From 1997 to 1998, he was a visiting student at Cornell University. In 2000, he joined the National Institute of Advanced Industrial Science and Technology (AIST) as a researcher. He moved to Tokyo Institute of Technology as an Assistant Professor in 2003, was promoted to Associate Professor in 2009, and became a Full Professor in 2017. His research focuses on directed self-assembly block copolymer materials, low dielectric loss polymers, high thermal conductivity epoxy materials, and wholly aromatic condensation polymers. He also serves as an Associate Editor for Materials Today Chemistry.

Seiji Nagahara serves as Vice President and Board Member of the Society of Photopolymer Science and Technology (SPST). Currently, he is Head of Technical Marketing at ASML Japan. Previously, he held key roles at Tokyo Electron Ltd. (TEL), Renesas Electronics and NEC, focusing on next-generation lithography and tool/process development. His career includes collaborative research with institutions like Toshiba, IMEC in Belgium, UC Berkeley, Argonne National Laboratory, and EIDEC. He holds a Bachelor's, Master's, and Ph.D. degrees in Engineering from Osaka University, Japan. He is SPIE Fellow and also holds positions in several academic and technical societies.

SHINJI YAMAKAWA, Director of Publication（山川 進二　国際学術誌出版委員長）

Shinji Yamakawa received his Bachelor's and Master's degrees in chemistry from Kansai University, Japan, in 2014 and 2016, and his Ph.D. (Eng.) degree from Tokyo Institute of Technology, Japan, in 2019. He was a specially appointed assistant professor at Tokyo Institute of Technology from 2019 to 2020. In 2020, He joined the Laboratory of Advanced Science and Technology for Industry (LASTI) of University of Hyogo as an assistant professor. Since Oct. 2024, he has been an associate professor. He has been awarded The Photopolymer Science and Technology Award: Best Paper Award in 2023. His current research interests are the synthesis of photoresists for next-generation lithography and the reaction mechanism analysis of EUV resist under EUV irradiation. He has been the SPST director of publication since Jan. 2025.

 Itaru Osaka received his doctoral degree from University of Tsukuba in 2002. After a 4-year research stint at Fujifilm, he worked as a postdoctoral researcher in Carnegie Mellon University in 2006–2009. He then started his professional carrier at Hiroshima University as an Assistant Professor in 2009, and moved to RIKEN as a Senior Research Scientist in 2013. He was appointed as a Professor at Hiroshima University in 2016. He has been awarded The Society of Polymer Science Japan Hitachi Chemical Award in 2013 and The Chemical Society of Japan Award for Creative Work for 2022. He has been an Executive Editor of Polymer Journal since 2018. His research interests include design and synthesis of π-conjugated materials, in particular, π-conjugated polymers for organic electronics such as field-effect transistors and solar cells. He has been the ICPST director of awards since 2022.

Hiroto Kudo is the Professor of Department of Chemistry and Materials Engineering, Kansai University. He received a Doctorate in polymer chemistry from Tokyo Institute of Technology, Japan in 2000. He did postdoctoral research at the Venture Business Laboratory at Yamagata University, Japan during 2000–2001. In his career at Kanagawa University, he has progressed from Research Associate (2001) to Assistant Professor (2007), and Associate Professor (2009).  In 2013, he moved to Kansai University as an Associate Professor and was promoted to Professor in 2015.  His current research interests include synthesis of new functional polymers applicable to EUV resists, UV-curing materials, high and low-refractive indices materials.　Since 2021, he has been a member of the ICPST director.  

Hiroto Kudo is the Professor of Department of Chemistry and Materials Engineering, Kansai University. He received a Doctorate in polymer chemistry from Tokyo Institute of Technology, Japan in 2000. He did postdoctoral research at the Venture Business Laboratory at Yamagata University, Japan during 2000–2001. In his career at Kanagawa University, he has progressed from Research Associate (2001) to Assistant Professor (2007), and Associate Professor (2009).  In 2013, he moved to Kansai University as an Associate Professor and was promoted to Professor in 2015.  His current research interests include synthesis of new functional polymers applicable to EUV resists, UV-curing materials, high and low-refractive indices materials.　Since 2021, he has been a member of the ICPST director. 

Dr. Masayuki Endo is currently working at E Litho Research, where he is conducting consulting on resists and lithography, technical research, and lectures. Before current position, he worked at Matsushita Electric Industrial, Panasonic, and Osaka University, where he was involved in the development of semiconductor lithography, resists, and resist processes.

Takashi Karatsu is the Professor of Department of Applied Chemistry and Biotechnology, Chiba University.

Takumi Ueno is Research Professor of Shinshu University, where he is teaching and consulting on resists, polyimides and photosensitive materials for LSI packaging, Before current position, he worked at Hitachi Ltd., Hitachi Chemical Co., and HD MicroSystems, where he was involved in the development of resists, photosensitive polyimides, and photosensitive materials for LSI packaging.

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