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Inventor

Yukio Yamaoka

Inventor
Sakai, JP

Overview

9→
Patents
1989–2006
Patent span
Chemistry
Primary field (CPC C)

Patents· 9 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%
C22CAlloys25%
B23KSoldering or unsoldering10%
C23CCoating metallic material10%
B05CApparatus for applying fluent materials to surfaces, in general5%
C25DProcesses for the electrolytic or electrophoretic production of coatings5%
D07BRopes or cables in general5%
E01DConstruction of bridges, elevated roadways or viaducts5%
E04CStructural elements5%
Y10TTechnical subjects covered by former us classification5%
PatentTitleYear
6,989,510'Non-copper-plated solid wire for carbon dioxide gas shielded arc welding'20066,787,735'Welding solid wire with high feeding performance'20046,752,880'Quenched and tempered steel wire with excellent cold forging properties'20045,762,724'High strength steel strand for prestressed concrete and method for manufacturing the same'19985,716,466'Stainless steel wire product'19985,545,482'Two-phase stainless steel wire rope having high fatigue resistance and corrosion resistance'19965,439,713'Steel wire coated with Fe-Zn-Al alloys and method for producing the same'19955,380,407'Method for facilitating distinction between different steel products'19954,889,567'High strength and high toughness steel bar, rod and wire and the process of producing the same'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989Patents assigned to KOBE SEIKO KK (1)· patent assignee history
1989Patents assigned to SHINKO KOSEN KOGYO KABUSHIKI (1)· patent assignee history
1989–1998Based in Sakai, JP· patent location history
1995–1998Patents assigned to SHINKO WIRE CO LTD (5)· patent assignee history
1995Based in Amagasaki, JP· patent location history
1998Based in Toyonaka, JP· patent location history
2004–2006Patents assigned to KISWEL LTD (2)· patent assignee history
2004Patents assigned to SAMHWA STEEL CO LTD (1)· patent assignee history
2004–2006Based in Osaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SHINKO WIRE CO LTD51995–1998
KISWEL LTD22004–2006
KOBE SEIKO KK11989
SAMHWA STEEL CO LTD12004
SHINKO KOSEN KOGYO KABUSHIKI11989
Locations
LocationPatentsSpan
Sakai, JP41989–1998
Osaka, JP32004–2006
Toyonaka, JP11998
Amagasaki, JP11995