Inventor

KOKUBUN Ippei

JP3 patents

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

NHK SPRING CO LTD

2 patents

US12473955B2Nov 18, 2025

Coil spring device

NHK SPRING CO LTD0 citations43

US12253134B2Mar 18, 2025

Coil spring device

NHK SPRING CO LTD0 citations43

KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECH

1 patent

US10982140B2Apr 20, 2021

Nitride phosphor particle dispersion-type sialon ceramic, fluorescent member, and method for producing nitride phosphor particle dispersion-type sialon ceramic

KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECH0 citations42