Inventor

Seishi Tsuyama

Inventor

Tokyo, JP

Overview

1988–2019

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.

C22Cprimary

C22CAlloys38%

C21DModifying the physical structure of ferrous metals31%

B21BRolling of metal6%

B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling6%

B23KSoldering or unsoldering6%

C22FChanging the physical structure of non-ferrous metals and non-ferrous alloys6%

F16LPipes6%

PatentTitleYear

10,240,226Steel plate for thick-walled steel pipe, method for manufacturing the same, and thick-walled high-strength steel pipe2019 7,294,215'Method and device for cooling steel sheet'2007 5,542,996'Method for manufacturing an ultra-high strength cold-rolled steel sheet with desirable delayed fracture resistance'1996 5,531,839'Continously annealed cold-rolled steel sheet excellent in balance between deep drawability and resistance to secondary-work embrittlement and method for manufacturing same'1996 5,356,493'Blister-resistant steel sheet and method for producing thereof'1994 5,116,571'Chromoum heat-resistant steel excellent in toughness and having high cracking resistance and high creep strength in welded joint'1992 5,035,754'Heat treating method for high strength aluminum alloy'1991 4,983,357'Heat-resistant TiAl alloy excellent in room-temperature fracture toughness, high-temperature oxidation resistance and high-temperature strength'1991 4,736,884'Method for manufacturing high-strength clad steel plate excellent in corrosion resistance'1988 4,720,307'Method for producing high strength steel excellent in properties after warm working'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1996Patents assigned to NIPPON KOKAN KK (8)· patent assignee history

1988–1992Based in Fukuyama, JP· patent location history

1991–2019Based in Tokyo, JP· patent location history

1991–1994Based in Kawasaki, JP· patent location history

2007–2019Patents assigned to JFE STEEL CORP (2)· patent assignee history

2007Based in Okayama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NIPPON KOKAN KK	8	1988–1996
JFE STEEL CORP	2	2007–2019

Locations

Location	Patents	Span
Tokyo, JP	4	1991–2019
Fukuyama, JP	3	1988–1992
Kawasaki, JP	2	1991–1994
Okayama, JP	1	2007