Patents/Inventors

Hisatoshi Hayakawa

TokyoJP3 patents

4 Patents

US121795102024
Friction Body Unit and Thermochromic Writing Instrument
Kabushiki Kaisha Pilot Corporation
0 cites
US120977232024
Retractable Writing Implement
Kabushiki Kaisha Pilot Corporation
0 cites
US119120582024
Retractable Writing Instrument
Kabushiki Kaisha Pilot Corporation
0 cites
US116671462023
Writing Tool
KABUSHIKI KAISHA PILOT CORPORATION
0 cites