Inventor

Riki Okamoto

Inventor

Tokyo, JP

Overview

2001–2021

Patent span

Chemistry

Primary field (CPC C)

Patents· 43 as inventor

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

C21Dprimary

C21DModifying the physical structure of ferrous metals27%

C22CAlloys27%

Y10TTechnical subjects covered by former us classification11%

C23CCoating metallic material11%

B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form8%

B21BRolling of metal6%

Y02PClimate change mitigation technologies in the production or processing of goods3%

B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling1%

B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material1%

C25DProcesses for the electrolytic or electrophoretic production of coatings1%

PatentTitleYear

11,118,252Galvannealed steel sheet2021 10,858,719Steel sheet2020 10,745,775Galvannealed steel sheet and method for producing the same2020 10,724,114High-strength cold-rolled steel sheet, high-strength hot-dip galvanized steel sheet and high-strength galvannealed steel sheet2020 10,603,703Method of manufacturing press-formed product, and press-formed product2020 10,513,749Hot-rolled steel sheet and production method of therefor2019 10,435,772Steel sheet2019 10,384,251Burring processing method2019 10,364,478Bainite-containing-type high-strength hot-rolled steel sheet having excellent isotropic workability and manufacturing method thereof2019 10,336,037Galvanized steel sheet and method for producing the same2019 10,294,551High-strength low-specific-gravity steel sheet having superior spot weldability2019 10,266,928Method for producing a cold-rolled steel sheet2019 10,167,539Hot-rolled steel sheet and method for producing same2019 10,066,283High-strength cold-rolled steel sheet having excellent uniform elongation and hole expandability2018 10,060,006High-strength cold-rolled steel sheet having excellent local deformability2018 9,988,697High-strength hot-rolled steel sheet having excellent local deformability and manufacturing method thereof2018 9,970,074Cold-rolled steel sheet, galvanized cold-rolled steel sheet and method of manufacturing the same2018 9,797,024'Hot-rolled steel sheet for gas nitrocarburizing and manufacturing method thereof'2017 9,752,217'Hot-rolled steel sheet and method of producing the same'2017 9,631,265'Hot-rolled steel sheet and method for producing same'2017 9,587,319'Hot-rolled steel sheet, cold-rolled steel sheet, galvanized steel sheet, and methods of manufacturing the same'2017 9,587,287'Bainite-containing-type high-strength hot-rolled steel sheet having excellent isotropic workability and manufacturing method thereof'2017 9,567,658'Cold-rolled steel sheet'2017 9,546,413'Hot-rolled steel sheet and production method thereof'2017 9,512,508'High-strength cold-rolled steel sheet having excellent stretch flangeability and precision punchability and manufacturing method thereof'2016 9,458,520'Manufacturing method of a high-strength cold-rolled steel sheet having excellent uniform elongation and hole expandability'2016 9,453,269'Hot-rolled steel sheet for gas nitrocarburizing and manufacturing method thereof'2016 9,410,231'Steel sheet and method of manufacturing steel sheet'2016 9,347,122'Manufacturing method of a high-strength cold-rolled steel sheet having excellent local deformability'2016 9,273,370'Hot-rolled steel sheet, cold-rolled steel sheet, galvanized steel sheet, and methods of manufacturing the same'2016 9,267,196'Method of producing a hot rolled steel sheet'2016 8,951,366'High-strength cold-rolled steel sheet and method of manufacturing thereof'2015 8,192,683'High-strength steel sheets excellent in hole-expandability and ductility'2012 8,182,740'High-strength steel sheets excellent in hole-expandability and ductility'2012 8,012,276'Method for manufacturing a steel sheet for tin plated steel sheet and tin-free steel sheet each having excellent formability'2011 7,938,917'Method for controlling cooling of steel sheet'2011 7,828,912'High-strength hot-rolled steel shaft excellent in hole expandability and ductility and production method thereof'2010 7,780,797'High strength thin steel excellent in hole expansibility, ductility and chemical treatment characteristics'2010 7,780,799'Cold-rolled steel sheet having a tensile strength of 780 MPA or more, an excellent local formability and a suppressed increase in weld hardness'2010 7,615,126'High strength hot rolled steel plate excellent in enlargeability and ductility and method for producing thereof'2009 7,501,031'Steel sheet for tin plated steel sheet and tin-free steel sheet each having excellent formability and manufacturing method thereof'2009 6,544,354'High-strength steel sheet highly resistant to dynamic deformation and excellent in workability and process for the production thereof'2003 6,319,338'High-strength steel plate having high dynamic deformation resistance and method of manufacturing the same'2001

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001–2021Patents assigned to NIPPON STEEL CORP (21)· patent assignee history

2001–2003Based in Futtsu, JP· patent location history

2009–2012Based in Tokai, JP· patent location history

2012–2018Patents assigned to OKAMOTO RIKI (16)· patent assignee history

2015–2020Patents assigned to NIPPON STEEL & SUMITOMO METAL CORP (29)· patent assignee history

2015–2018Patents assigned to FUJITA NOBUHIRO (13)· patent assignee history

2015–2021Based in Tokyo, JP· patent location history

2016–2018Patents assigned to NAKANO KAZUAKI (9)· patent assignee history

2019–2020Based in Chiba, JP· patent location history

2019Based in Kimitsu, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NIPPON STEEL & SUMITOMO METAL CORP	29	2015–2020
NIPPON STEEL CORP	21	2001–2021
OKAMOTO RIKIself	16	2012–2018
FUJITA NOBUHIRO	13	2015–2018
NAKANO KAZUAKI	9	2016–2018

Locations

Location	Patents	Span
Tokyo, JP	28	2015–2021
Tokai, JP	9	2009–2012
Chiba, JP	2	2019–2020
Futtsu, JP	2	2001–2003
Kimitsu, JP	1	2019