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Inventor

Atsuhisa Yakawa

Inventor
Tokyo, JP

Overview

6→
Patents
1993–2021
Patent span
Chemistry
Primary field (CPC C)

Patents· 6 as inventor

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

C21Dprimary
C21DModifying the physical structure of ferrous metals14%
C22CAlloys14%
C25DProcesses for the electrolytic or electrophoretic production of coatings14%
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material7%
B21JForging7%
C23CCoating metallic material7%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general7%
F02BInternal-combustion piston engines7%
F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids7%
F16CShafts7%
PatentTitleYear
10,894,995Austenitic stainless steel sheet for exhaust component having excellent heat resistance and workability, turbocharger component, and method for producing austenitic stainless steel sheet for exhaust component202110,603,712Method of increasing thickness of tube and increased thickness tube20209,945,016Heat-resistant austenitic stainless steel sheet20185,954,880'Roller support device in molten metal plating bath'19995,330,850'Corrosion-resistant surface-coated steel sheet'19945,236,574'Electroplating of hot-galvanized steel sheet and continuous plating line therefor'1993

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993–1999Patents assigned to SUMITOMO METAL IND (3)· patent assignee history
1993–1994Based in Nishinomiya, JP· patent location history
1999Patents assigned to NSK LTD (1)· patent assignee history
1999Based in Osaka, JP· patent location history
2018–2021Patents assigned to NIPPON STEEL & SUMIKIN SST (3)· patent assignee history
2018–2021Based in Tokyo, JP· patent location history
2020Patents assigned to NIPPON STEEL & SUMKIN STAINLESS STEEL CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NIPPON STEEL & SUMIKIN SST32018–2021
SUMITOMO METAL IND31993–1999
NIPPON STEEL & SUMKIN STAINLESS STEEL CORP12020
NSK LTD11999
Locations
LocationPatentsSpan
Tokyo, JP32018–2021
Nishinomiya, JP21993–1994
Osaka, JP11999