Patents/Inventors

Yumiko Haruhara

TokyoJP2 patents

3 Patents

US120546222024
Oil-based Ink Composition for Writing Utensils, Writing Utensil Using Same, and Airbrush Unit Using Same
MITSUBISHI PENCIL COMPANY, LIMITED
0 cites
US117953362023
Oil-based Ink Composition for Writing Implements
Mitsubishi Pencil Company, Limited
0 cites
US116493632023
Oil-based Ink Composition for Writing Instrument
Mitsubishi Pencil Company, Limited
0 cites