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Inventor

Katsuhiko Kizawa

Inventor
Osaka, JP

Overview

10→
Patents
2003–2020
Patent span
Chemistry
Primary field (CPC C)

Patents· 10 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C21Dprimary
C21DModifying the physical structure of ferrous metals29%
F16CShafts20%
C22CAlloys17%
C23CCoating metallic material9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
Y10TTechnical subjects covered by former us classification9%
F01LCyclically operating valves for machines or engines3%
H05BElectric heating3%
Y02PClimate change mitigation technologies in the production or processing of goods3%
PatentTitleYear
10,538,821Heat treatment apparatus and heat treatment method202010,190,185Hardening method of annular workpiece20199,709,099'Bearing ring and rolling bearing'20178,640,341'Method of producing rolling sliding member'20148,596,875'Bearing constituent member and process for producing the same, and rolling bearing having bearing constituent member'20137,413,704'Case hardening bearing steel having excellent toughness and rolling contact fatigue life in intermediate temperature'20087,207,933'Carburized roller member made of high carbon chromium steel'20076,893,609'Bearing material'20056,874,943'Antifriction bearing and process for producing outer race for use in antifriction bearing'20056,582,532'Steel for large bearing and parts for large bearing'2003

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2003–2008Patents assigned to KOYO SEIKO CO (4)· patent assignee history
2003–2020Based in Osaka, JP· patent location history
2005–2008Patents assigned to JFE STEEL CORP (2)· patent assignee history
2005Based in Kashiwara, JP· patent location history
2013–2020Patents assigned to JTEKT CORP (5)· patent assignee history
2013–2014Patents assigned to KIZAWA KATSUHIKO (2)· patent assignee history
2014Patents assigned to MATSUI TOWAKO (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
JTEKT CORP52013–2020
KOYO SEIKO CO42003–2008
JFE STEEL CORP22005–2008
KIZAWA KATSUHIKOself22013–2014
MATSUI TOWAKO12014
Locations
LocationPatentsSpan
Osaka, JP92003–2020
Kashiwara, JP12005