Inventor

KOIZUMI TOSHIHIRO

JP12 patents

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

KOIZUMI FACTORY CORP

5 patents

US11498230B2Nov 15, 2022

Fastner

KOIZUMI FACTORY CORP0 citations58

US11173618B2Nov 16, 2021

Fastner

KOIZUMI FACTORY CORP1 citations58

US12497117B2Dec 16, 2025

Bell for bicycle

KOIZUMI FACTORY CORP0 citations47

US11922914B2Mar 5, 2024

Desk bell

KOIZUMI FACTORY CORP0 citations47

US11875668B2Jan 16, 2024

Information transmission system using bell

KOIZUMI FACTORY CORP0 citations35

KOIZUMI FACTORY

2 patents

US11583119B2Feb 21, 2023

Drinking container used for toasting and drinking container serving as bell

KOIZUMI FACTORY0 citations54

US9230530B2Jan 5, 2016

Rolling element bell

KOIZUMI FACTORY0 citations44

NAKAZAWA CHIHARU

1 patent

US8684473B2Apr 1, 2014

Gear pump and gear pump for brake apparatus

NAKAZAWA CHIHARU8 citations81

MARUO RYOHEI

1 patent

US8257070B2Sep 4, 2012

Seal apparatus of gear pump

MARUO RYOHEI3 citations55

HITACHI ASTEMO LTD

1 patent

US12012081B2Jun 18, 2024

Brake control apparatus

HITACHI ASTEMO LTD0 citations50

KOIZUMI TOSHIHIRO

1 patent

US8579616B2Nov 12, 2013

Gear pump

KOIZUMI TOSHIHIRO1 citations44

MISUNOU MASAKI

1 patent

US8894396B2Nov 25, 2014

Pump apparatus with pressing means

MISUNOU MASAKI0 citations34