Patents

18 patents and patent applications, newest first.

Liquid crystal polymer fine particles, and method for producing liquid crystal polymer fine particles, Applicant: The Ritsumeikan Trust, Inventors: Osamu Tsutsumi, Kyohei Hisano, Tomoki Shigeyama, Shodai Hayashi, Chinese Patent Application 202280031885.4 (CN 117222688 A, published December 12, 2023; priority date May 7, 2021), notice of registration procedure: September 22, 2026
US Patent App. 18/289,062 (PCT/JP2022/019448, filed Apr. 28, 2022; national stage entry Oct. 31, 2023; published as US 2024/0228684 A1, Jul. 11, 2024), Notice of Allowance mailed Sep. 22, 2026
Liquid crystal polymer fine particles, and method for producing liquid crystal polymer fine particles, Applicant: The Ritsumeikan Trust, Inventors: Osamu Tsutsumi, Kyohei Hisano, Tomoki Shigeyama, Shodai Hayashi, Japanese Patent Application 2023-518691 (PCT/JP2022/019448, international filing date: April 28, 2022, WO 2022/234837 A1, priority date: May 7, 2021), patent grant decision: September 1, 2026

Composite structure, sensor, and sensor system, Inventors: Osamu Tsutsumi, Kyohei Hisano, Seiya Kimura, Kyoko Yuasa, Kazuhiro Shimonomura, Japanese Patent No. 7353615, registered September 22, 2023

Composition for circularly polarized luminescence, Inventors: Osamu Tsutsumi, Kaho Sakamoto, Anukul Preeyanuch, Japanese Patent No. 7055348, registered April 4, 2022

Polymer useful as a photoluminescent material, Inventors: Osamu Tsutsumi, Osama Mohammad Younis, Japanese Patent No. 6918352, registered July 27, 2021
Liquid crystal polymer fine particles, and method for producing liquid crystal polymer fine particles, Inventors: Osamu Tsutsumi, Kyohei Hisano, Tomoki Shigeyama, Shodai Hayashi, Japanese Patent Application No. 2021-079160 (filed May 7, 2021)

Cholesteric liquid crystal polymer particles having a radial helical molecular alignment structure, cholesteric liquid crystal structure, method for producing cholesteric liquid crystal polymer particles, and method for using a dispersion stabilizer, Inventors: Osamu Tsutsumi, Kyohei Hisano, Tomoki Shigeyama, Japanese Patent Application No. 2019-030942 (filed February 22, 2019)

Photoresponsive liquid crystal composition, Inventors: Osamu Tsutsumi, Shumpei Hayashi, Japanese Patent Application No. 2014-219144 (filed October 28, 2014)

Polymer electrolyte membrane, electrode, and fuel cell, Inventors: Osamu Tsutsumi, Hiroshi Yokota, Japanese Patent Application No. 2007-086856 (filed March 29, 2007)

Polymer electrolyte membrane, electrode, membrane electrode assembly, and fuel cell, Inventors: Osamu Tsutsumi, Hiroshi Yokota, Japanese Patent Application No. 2005-100654 (filed March 31, 2005)
Copolymer with Phosphoryl Group and Molded Article of Same, Inventor: Osamu Tsutsumi, Ryotaro Yamamoto, PCT/JP2005/003426, February 23, 2005.

Stimulus-responsive porphyrin complex, Inventors: Osamu Tsutsumi, Hirokazu Sato, Kazuyoshi Takeda, Takuji Ogawa, Japanese Patent Application No. 2004-130863 (filed April 27, 2004)
Power generation method and apparatus using organic substances, Inventors: Tatsuo Shimomura, Osamu Tsutsumi, Kazuyoshi Takeda, Japanese Patent Application No. 2004-096582 (filed March 29, 2004)
Copolymer having phosphoryl groups and molded article thereof, Inventor: Osamu Tsutsumi, Japanese Patent Application No. 2004-053048 (filed February 27, 2004)

Polymer compound, Inventors: Tomiki Ikeda, Kunihiko Okano, Atsushi Shishido, Osamu Tsutsumi, Takeshi Shiono, Japanese Patent Application No. 2003-369976 (filed October 30, 2003)

Optical switching method, Inventors: Tomiki Ikeda, Osamu Tsutsumi, Japanese Unexamined Patent Publication No. H08-146391 (June 7, 1996)
Optical switching method, Inventors: Tomiki Ikeda, Osamu Tsutsumi, Takeo Sasaki, Japanese Unexamined Patent Publication No. H08-015661 (January 19, 1996)