Inventor

Hiroshi Tamehiro

Inventor

Kimitsu, JP

Overview

22→

Patents

1976–2003

Patent span

Chemistry

Primary field (CPC C)

Patents· 22 as inventor

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

C21Dprimary

C21DModifying the physical structure of ferrous metals39%

C22CAlloys37%

Y10TTechnical subjects covered by former us classification10%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%

B23KSoldering or unsoldering5%

B21BRolling of metal2%

PatentTitleYear

6,532,995'Super-high-strength line pipe excellent in low temperature toughness and production method thereof'2003 6,264,760'Ultra-high strength, weldable steels with excellent ultra-low temperature toughness'2001 6,248,191'Method for producing ultra-high strength, weldable steels with superior toughness'2001 6,228,183'Ultra-high strength, weldable, boron-containing steels with superior toughness'2001 6,224,689'Ultra-high strength, weldable, essentially boron-free steels with superior toughness'2001 5,985,053'Steel having improved toughness in welding heat-affected zone'1999 5,817,275'Steel plate having excellent corrosion resistance and sulfide stress cracking resistance'1998 5,798,004'Weldable high strength steel having excellent low temperature toughness'1998 5,755,895'High strength line pipe steel having low yield ratio and excellent in low temperature toughness'1998 5,723,089'Line pipe metal arc welded with wire alloy'1998 5,716,465'High-corrosion-resistant martensitic stainless steel having excellent weldability and process for producing the same'1998 5,183,198'Method of producing clad steel plate having good low-temperature toughness'1993 5,147,474'Building construction steel having excellent fire resistance and low yield ratio'1992 4,990,196'Process for manufacturing building construction steel having excellent fire resistance and low yield ratio'1991 4,851,052'Method of producing steel plate with good low-temperature toughness'1989 4,591,396'Method of producing steel having high strength and toughness'1986 4,521,258'Method of making wrought high tension steel having superior low temperature toughness'1985 RE031251'Process for producing a high tension steel sheet product having an excellent low-temperature toughness with a yield point of 40 kg/mm.sup.2 or higher'1983 4,219,371'Process for producing high-tension bainitic steel having high-toughness and excellent weldability'1980 4,138,278'Method for producing a steel sheet having remarkably excellent toughness at low temperatures'1979 4,105,474'Process for producing a high tension steel sheet product having an excellent low-temperature toughness with a yield point of 40 kg/mm.sup.2 or higher'1978 3,973,999'Method for producing a high tensile strength and high toughness bend pipe'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2003Patents assigned to NIPPON STEEL CORP (20)· patent assignee history

1976–1993Based in Kimitsu, JP· patent location history

1986Based in Kimizu, JP· patent location history

1989Patents assigned to NIPPON STEEL CORPOPRATION (1)· patent assignee history

1998–2003Based in Futtsu, JP· patent location history

1998–2001Based in Chiba, JP· patent location history

2001Patents assigned to EXXONMOBIL UPSTREAM RES CO (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NIPPON STEEL CORP	20	1976–2003
EXXONMOBIL UPSTREAM RES CO	4	2001
NIPPON STEEL CORPOPRATION	1	1989

Locations

Location	Patents	Span
Kimitsu, JP	10	1976–1993
Futtsu, JP	6	1998–2003
Chiba, JP	5	1998–2001
Kimizu, JP	1	1986