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Inventor

Kenji Aihara

Inventor
Kitakyushu, JP

Overview

10→
Patents
1980–2000
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 metals25%
C22CAlloys17%
B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling13%
C23CCoating metallic material8%
F16DCouplings for transmitting rotation8%
B21BRolling of metal4%
B21FWorking or processing of metal wire4%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form4%
C22FChanging the physical structure of non-ferrous metals and non-ferrous alloys4%
H01BCables4%
PatentTitleYear
6,126,897'Carburizing steel and steel products manufactured making use of the carburizing steel'20005,853,502'Carburizing steel and steel products manufactured making use of the carburizing steel'19985,080,727'Metallic material having ultra-fine grain structure and method for its manufacture'19924,881,987'Process for direct softening heat treatment of rolled wire rods'19894,834,345'Process and apparatus for direct softening heat treatment of rolled wire rods'19894,604,145'Process for production of steel bar or steel wire having an improved spheroidal structure of cementite'19864,604,146'Process for manufacturing high tensile steel wire'19864,545,227'Apparatus for dry type continuous wire drawing'19854,525,598'Steel wire for use in stranded steel core of an aluminum conductor, steel reinforced and production of same'19854,240,827'Nonmagnetic alloy steel having improved machinability'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–2000Patents assigned to SUMITOMO METAL IND (10)· patent assignee history
1980–1986Based in Amagasaki, JP· patent location history
1985–1992Based in Kitakyushu, JP· patent location history
1989Based in Kitakyusyu, JP· patent location history
1998–2000Patents assigned to NTN TOYO BEARING CO LTD (2)· patent assignee history
1998–2000Based in Osaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SUMITOMO METAL IND101980–2000
NTN TOYO BEARING CO LTD21998–2000
Locations
LocationPatentsSpan
Kitakyushu, JP31985–1992
Amagasaki, JP31980–1986
Osaka, JP21998–2000
Kitakyusyu, JP21989