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Tomoyuki YAMAMURA
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Aichi-ken, JP
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Patents Grants
last 30 patents
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Patent Grant
Reversibly thermochromic aqueous ink composition and writing instru...
Patent number
11,267,978
Issue date
Mar 8, 2022
Kabushiki Kaisha Pilot Corporation
Katsuyuki Fujita
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Patents Applications
last 30 patents
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Patent Application
REVERSIBLY THERMOCHROMIC AQUEOUS INK COMPOSITION AND WRITING INSTRU...
Publication number
20200325351
Publication date
Oct 15, 2020
KABUSHIKI KAISHA PILOT CORPORATION (also trading as PILOT CORPORATION)
Katsuyuki FUJITA
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES