Inventor

Katsuro Kuroki

Inventor

Kitakyushu, JP

Overview

1976–1998

Patent span

Chemistry

Primary field (CPC C)

Patents· 24 as inventor

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

C21Dprimary

C21DModifying the physical structure of ferrous metals49%

C22CAlloys21%

H01FMagnets19%

B21BRolling of metal2%

B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material2%

C12NMicroorganisms or enzymes2%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2%

Y10TTechnical subjects covered by former us classification2%

PatentTitleYear

5,840,131'Process for producing grain-oriented electrical steel sheet having excellent glass film and magnetic properties'1998 5,782,998'Grain oriented electrical steel sheet having specular surface'1998 5,512,110'Process for production of grain oriented electrical steel sheet having excellent magnetic properties'1996 5,507,883'Grain oriented electrical steel sheet having high magnetic flux density and ultra low iron loss and process for production the same'1996 5,261,972'Process for producing grain-oriented electrical steel strip having high magnetic flux density'1993 5,049,205'Process for preparing unidirectional silicon steel sheet having high magnetic flux density'1991 4,994,120'Process for production of grain oriented electrical steel sheet having high flux density'1991 4,992,114'Process for producing grain-oriented thin electrical steel sheet having high magnetic flux density by one-stage cold-rolling method'1991 4,979,997'Process for producing grain-oriented electrical steel sheet having superior magnetic and surface film characteristics'1990 4,979,996'Process for preparation of grain-oriented electrical steel sheet comprising a nitriding treatment'1990 4,948,433'Process for preparation of thin grain oriented electrical steel sheet having excellent iron loss and high flux density'1990 4,938,807'Process for production of grain oriented electrical steel sheet having high flux density'1990 4,863,532'Grain-oriented electromagnetic steel sheet'1989 4,806,176'Process for producing a grain-oriented electromagnetic steel sheet having a high magnetic flux density'1989 4,753,692'Grain-oriented electromagnetic steel sheet and process for producing the same'1988 4,742,706'Strain imparting device'1988 4,692,193'Process for producing a grain-oriented electrical steel sheet having a low watt loss'1987 4,595,426'Grain-oriented silicon steel sheet and process for producing the same'1986 4,552,596'Grain-oriented electromagnetic steel sheet with improved watt loss'1985 4,548,656'Method and apparatus for reducing the watt loss of a grain-oriented electromagnetic steel sheet and a grain-oriented electromagnetic steel sheet having a low watt loss'1985 4,318,758'Method for producing a grain-oriented magnetic steel sheet having good magnetic properties'1982 4,293,350'Grain-oriented electromagnetic steel sheet with improved watt loss'1981 4,203,784'Grain oriented electromagnetic steel sheet'1980 3,990,923'Method of producing grain oriented electromagnetic steel sheet'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1998Patents assigned to NIPPON STEEL CORP (24)· patent assignee history

1976–1998Based in Kitakyushu, JP· patent location history

1988Patents assigned to NITTETSU PLANT DESIGNING CORP (1)· patent assignee history

1990Based in Kyushu, JP· patent location history

1991–1998Based in Fukuoka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NIPPON STEEL CORP	24	1976–1998
NITTETSU PLANT DESIGNING CORP	1	1988

Locations

Location	Patents	Span
Kitakyushu, JP	21	1976–1998
Fukuoka, JP	2	1991–1998
Kyushu, JP	1	1990