fiscal years 2017 to 2024; the company's fiscal year starts on January 1 of the stated year and ends on December 31 of the same year
Supplementary notes
*Due to a change in the fiscal year-end, the fiscal year ended December 31, 2017, was an irregular nine-month period in Japan and 12 months overseas.
100 Japanese yen equal 0.69 U.S. dollars or 0.61 euros as of May 2025. Values have been rounded. Data prior to fiscal year 2023 come from previous reporting.
Tokyo Ohka Kogyo Co., Ltd. spent billion Japanese yen on research and development (R&D) in fiscal year 2024, which was an increase of almost *** billion yen compared the previous year. The company produces electronic functional materials, high purity chemicals, and process equipment.
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Tokyo Ohka Kogyo. (March 28, 2025). Research and development (R&D) expenses of Tokyo Ohka Kogyo Co., Ltd. from fiscal year 2017 to 2024 (in billion Japanese yen) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 29, 2026, from /statistics/1308781/tokyo-ohka-kogyo-research-and-development-expenses/
Tokyo Ohka Kogyo. "Research and development (R&D) expenses of Tokyo Ohka Kogyo Co., Ltd. from fiscal year 2017 to 2024 (in billion Japanese yen)." Chart. March 28, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 29, 2026. /statistics/1308781/tokyo-ohka-kogyo-research-and-development-expenses/
Tokyo Ohka Kogyo. (2025). Research and development (R&D) expenses of Tokyo Ohka Kogyo Co., Ltd. from fiscal year 2017 to 2024 (in billion Japanese yen). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 29, 2026. /statistics/1308781/tokyo-ohka-kogyo-research-and-development-expenses/
Tokyo Ohka Kogyo. "Research and Development (R&d) Expenses of Tokyo Ohka Kogyo Co., Ltd. from Fiscal Year 2017 to 2024 (in Billion Japanese Yen)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 28 Mar 2025, /statistics/1308781/tokyo-ohka-kogyo-research-and-development-expenses/
Tokyo Ohka Kogyo, Research and development (R&D) expenses of Tokyo Ohka Kogyo Co., Ltd. from fiscal year 2017 to 2024 (in billion Japanese yen) ÌÇÐÄÆƽâ°æ, /statistics/1308781/tokyo-ohka-kogyo-research-and-development-expenses/ (last visited July 29, 2026)
Research and development (R&D) expenses of Tokyo Ohka Kogyo Co., Ltd. from fiscal year 2017 to 2024 (in billion Japanese yen) [Graph], Tokyo Ohka Kogyo, March 28, 2025. [Online]. Available: /statistics/1308781/tokyo-ohka-kogyo-research-and-development-expenses/
