Inventor

YASUIKE KIYONORI

JP2 patents

⚠️ This page may combine multiple inventors who share the name “YASUIKE KIYONORI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PENTEL KK

1 patent

US11697743B2Jul 11, 2023

Ink composition, writing instrument and method for producing ink composition

PENTEL KK0 citations48

OTSUBO AYA

1 patent

US8771410B2Jul 8, 2014

Ink for ballpoint pens and ballpoint pen using same

OTSUBO AYA1 citations42