Takafumi Yokoyama

Person

Amagasaki-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Steel sheet and method for producing same
- Patent number 12,098,440
- Issue date Sep 24, 2024
- Nippon Steel Corporation
- Takafumi Yokoyama
- C21 - METALLURGY OF IRON
Information Patent Grant
Hot dip galvanized steel sheet and method for producing same
- Patent number 12,006,562
- Issue date Jun 11, 2024
- Nippon Steel Corporation
- Takafumi Yokoyama
- C21 - METALLURGY OF IRON
Information Patent Grant
Steel sheet
- Patent number 11,970,752
- Issue date Apr 30, 2024
- Nippon Steel Corporation
- Kengo Takeda
- C21 - METALLURGY OF IRON
Information Patent Grant
Hot dip galvanized steel sheet and method for producing same
- Patent number 11,905,570
- Issue date Feb 20, 2024
- Nippon Steel Corporation
- Takafumi Yokoyama
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
High-strength steel sheet having excellent moldability and impact r...
- Patent number 11,885,025
- Issue date Jan 30, 2024
- Nippon Steel Corporation
- Hiroyuki Kawata
- C21 - METALLURGY OF IRON
Information Patent Grant
Zinc-plated steel sheet and manufacturing method thereof
- Patent number 11,859,259
- Issue date Jan 2, 2024
- Nippon Steel Corporation
- Takafumi Yokoyama
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Hot dip galvanized steel sheet and method for producing same
- Patent number 11,814,708
- Issue date Nov 14, 2023
- Nippon Steel Corporation
- Takafumi Yokoyama
- C21 - METALLURGY OF IRON
Information Patent Grant
Steel sheet and method of producing same
- Patent number 11,732,321
- Issue date Aug 22, 2023
- Nippon Steel Corporation
- Kengo Takeda
- C21 - METALLURGY OF IRON
Information Patent Grant
Zinc-plated steel sheet and manufacturing method thereof
- Patent number 11,685,963
- Issue date Jun 27, 2023
- Nippon Steel Corporation
- Takafumi Yokoyama
- C21 - METALLURGY OF IRON
Information Patent Grant
Steel sheet and manufacturing method therefor
- Patent number 11,680,303
- Issue date Jun 20, 2023
- Nippon Steel Corporation
- Takafumi Yokoyama
- C21 - METALLURGY OF IRON
Information Patent Grant
Steel sheet and manufacturing method of therefor
- Patent number 11,447,848
- Issue date Sep 20, 2022
- Nippon Steel Corporation
- Takafumi Yokoyama
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Steel sheet and manufacturing method therefor
- Patent number 11,377,710
- Issue date Jul 5, 2022
- Nippon Steel Corporation
- Takafumi Yokoyama
- C21 - METALLURGY OF IRON
Information Patent Grant
High strength hot-dip galvanized steel sheet and production method...
- Patent number 11,332,803
- Issue date May 17, 2022
- Nippon Steel Corporation
- Takafumi Yokoyama
- B32 - LAYERED PRODUCTS
Information Patent Grant
Cold-rolled steel sheet and hot-dip galvanized cold-rolled steel sheet
- Patent number 11,326,234
- Issue date May 10, 2022
- Nippon Steel Corporation
- Takafumi Yokoyama
- C21 - METALLURGY OF IRON
Information Patent Grant
High-strength steel sheet and method of manufacturing the same
- Patent number 11,174,529
- Issue date Nov 16, 2021
- Nippon Steel Corporation
- Riki Okamoto
- C21 - METALLURGY OF IRON
Information Patent Grant
High-strength cold-rolled steel sheet, high-strength hot-dip galvan...
- Patent number 10,724,114
- Issue date Jul 28, 2020
- Nippon Steel Corporation
- Takafumi Yokoyama
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Hot-dip galvanized steel sheet
- Patent number 10,718,044
- Issue date Jul 21, 2020
- Nippon Steel Corporation
- Takafumi Yokoyama
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Hot-dip galvannealed hot-rolled steel sheet and process for produci...
- Patent number 10,351,942
- Issue date Jul 16, 2019
- Nippon Steel & Sumitomo Metal Corporation
- Takafumi Yokoyama
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
STEEL SHEET AND METHOD FOR PRODUCING SAME
- Publication number 20240327965
- Publication date Oct 3, 2024
- NIPPON STEEL CORPORATION
- Taku MIYAKAWA
- C21 - METALLURGY OF IRON
Information Patent Application
HOT DIP GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING SAME
- Publication number 20240327962
- Publication date Oct 3, 2024
- NIPPON STEEL CORPORATION
- Takafumi YOKOYAMA
- C21 - METALLURGY OF IRON
Information Patent Application
COLD ROLLED STEEL SHEET AND METHOD FOR PRODUCING SAME
- Publication number 20240263288
- Publication date Aug 8, 2024
- NIPPON STEEL CORPORATION
- Takafumi YOKOYAMA
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
HOT DIP GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING SAME
- Publication number 20240182997
- Publication date Jun 6, 2024
- NIPPON STEEL CORPORATION
- Takafumi YOKOYAMA
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
STEEL SHEET AND METHOD FOR PRODUCING SAME
- Publication number 20230399712
- Publication date Dec 14, 2023
- NIPPON STEEL CORPORATION
- Takafumi YOKOYAMA
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
STEEL SHEET AND METHOD FOR MANUFACTURING SAME
- Publication number 20230304119
- Publication date Sep 28, 2023
- NIPPON STEEL CORPORATION
- Takuya KUWAYAMA
- C21 - METALLURGY OF IRON
Information Patent Application
STEEL SHEET
- Publication number 20220282351
- Publication date Sep 8, 2022
- NIPPON STEEL CORPORATION
- Kengo TAKEDA
- C21 - METALLURGY OF IRON
Information Patent Application
STEEL SHEET
- Publication number 20220275493
- Publication date Sep 1, 2022
- Nippon Steel Corporation
- Takafumi YOKOYAMA
- C21 - METALLURGY OF IRON
Information Patent Application
STEEL SHEET AND METHOD OF PRODUCING SAME
- Publication number 20220145417
- Publication date May 12, 2022
- NIPPON STEEL CORPORATION
- Kengo TAKEDA
- C21 - METALLURGY OF IRON
Information Patent Application
HOT DIP GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING SAME
- Publication number 20220127709
- Publication date Apr 28, 2022
- NIPPON STEEL CORPORATION
- Takafumi YOKOYAMA
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
HIGH-STRENGTH STEEL SHEET HAVING EXCELLENT MOLDABILITY AND IMPACT R...
- Publication number 20220127691
- Publication date Apr 28, 2022
- NIPPON STEEL CORPORATION
- Hiroyuki KAWATA
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
HOT DIP GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING SAME
- Publication number 20220119908
- Publication date Apr 21, 2022
- NIPPON STEEL CORPORATION
- Takafumi YOKOYAMA
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
HOT DIP GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING SAME
- Publication number 20220090248
- Publication date Mar 24, 2022
- NIPPON STEEL CORPORATION
- Takafumi YOKOYAMA
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
HOT DIP GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING SAME
- Publication number 20220064771
- Publication date Mar 3, 2022
- NIPPON STEEL CORPORATION
- Takafumi YOKOYAMA
- C21 - METALLURGY OF IRON
Information Patent Application
HIGH-STRENGTH STEEL PLATE HAVING EXCELLENT FORMABILITY, TOUGHNESS A...
- Publication number 20210340653
- Publication date Nov 4, 2021
- NIPPON STEEL CORPORATION
- Hiroyuki KAWATA
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
ZINC-PLATED STEEL SHEET AND MANUFACTURING METHOD THEREOF
- Publication number 20210230712
- Publication date Jul 29, 2021
- NIPPON STEEL CORPORATION
- Takafumi YOKOYAMA
- C21 - METALLURGY OF IRON
Information Patent Application
ZINC-PLATED STEEL SHEET AND MANUFACTURING METHOD THEREOF
- Publication number 20210155999
- Publication date May 27, 2021
- NIPPON STEEL CORPORATION
- Takafumi YOKOYAMA
- B32 - LAYERED PRODUCTS
Information Patent Application
STEEL SHEET AND MANUFACTURING METHOD OF THEREFOR
- Publication number 20210123122
- Publication date Apr 29, 2021
- NIPPON STEEL CORPORATION
- Takafumi YOKOYAMA
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
STEEL SHEET AND MANUFACTURING METHOD THEREFOR
- Publication number 20210095356
- Publication date Apr 1, 2021
- NIPPON STEEL CORPORATION
- Takafumi YOKOYAMA
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
STEEL SHEET AND MANUFACTURING METHOD THEREFOR
- Publication number 20210017620
- Publication date Jan 21, 2021
- NIPPON STEEL CORPORATION
- Takafumi YOKOYAMA
- B32 - LAYERED PRODUCTS
Information Patent Application
HIGH STRENGTH HOT-DIP GALVANIZED STEEL SHEET AND PRODUCTION METHOD...
- Publication number 20200115771
- Publication date Apr 16, 2020
- NIPPON STEEL CORPORATION
- Takafumi YOKOYAMA
- C21 - METALLURGY OF IRON
Information Patent Application
COLD-ROLLED STEEL SHEET AND HOT-DIP GALVANIZED COLD-ROLLED STEEL SHEET
- Publication number 20200024709
- Publication date Jan 23, 2020
- NIPPON STEEL CORPORATION
- Takafumi YOKOYAMA
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
HOT-DIP GALVANIZED STEEL SHEET
- Publication number 20190169729
- Publication date Jun 6, 2019
- NIPPON STEEL & SUMITOMO METAL CORPORATION
- Takafumi YOKOYAMA
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
HIGH STRENGTH HOT ROLLED STEEL SHEET
- Publication number 20180209007
- Publication date Jul 26, 2018
- NIPPON STEEL & SUMITOMO METAL CORPORATION
- Natsuko SUGIURA
- C21 - METALLURGY OF IRON
Information Patent Application
HIGH-STRENGTH COLD-ROLLED STEEL SHEET, HIGH-STRENGTH HOT-DIP GALVAN...
- Publication number 20180202016
- Publication date Jul 19, 2018
- NIPPON STEEL & SUMITOMO METAL CORPORATION
- Takafumi YOKOYAMA
- C21 - METALLURGY OF IRON
Information Patent Application
HIGH-STRENGTH STEEL SHEET AND METHOD OF MANUFACTURING THE SAME
- Publication number 20180148809
- Publication date May 31, 2018
- NIPPON STEEL & SUMITOMO METAL CORPORATION
- Riki OKAMOTO
- C21 - METALLURGY OF IRON
Information Patent Application
HOT-ROLLED STEEL SHEET AND METHOD FOR PRODUCING THE SAME
- Publication number 20180100213
- Publication date Apr 12, 2018
- Yasuaki TANAKA
- C21 - METALLURGY OF IRON
Information Patent Application
HOT-DIP GALVANNEALED HOT-ROLLED STEEL SHEET AND PROCESS FOR PRODUCI...
- Publication number 20150140358
- Publication date May 21, 2015
- NIPPON STEEL & SUMITOMO METAL CORPORATION
- Takafumi Yokoyama
- B32 - LAYERED PRODUCTS

Takafumi Yokoyama

Person

Patents Grantslast 30 patents

Steel sheet and method for producing same

Hot dip galvanized steel sheet and method for producing same

Steel sheet

Hot dip galvanized steel sheet and method for producing same

High-strength steel sheet having excellent moldability and impact r...

Zinc-plated steel sheet and manufacturing method thereof

Hot dip galvanized steel sheet and method for producing same

Steel sheet and method of producing same

Zinc-plated steel sheet and manufacturing method thereof

Steel sheet and manufacturing method therefor

Steel sheet and manufacturing method of therefor

Steel sheet and manufacturing method therefor

High strength hot-dip galvanized steel sheet and production method...

Cold-rolled steel sheet and hot-dip galvanized cold-rolled steel sheet

High-strength steel sheet and method of manufacturing the same

High-strength cold-rolled steel sheet, high-strength hot-dip galvan...

Hot-dip galvanized steel sheet

Hot-dip galvannealed hot-rolled steel sheet and process for produci...

Patents Applicationslast 30 patents

STEEL SHEET AND METHOD FOR PRODUCING SAME

HOT DIP GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING SAME

COLD ROLLED STEEL SHEET AND METHOD FOR PRODUCING SAME

HOT DIP GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING SAME

STEEL SHEET AND METHOD FOR PRODUCING SAME

STEEL SHEET AND METHOD FOR MANUFACTURING SAME

STEEL SHEET

STEEL SHEET

STEEL SHEET AND METHOD OF PRODUCING SAME

HOT DIP GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING SAME

HIGH-STRENGTH STEEL SHEET HAVING EXCELLENT MOLDABILITY AND IMPACT R...

HOT DIP GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING SAME

HOT DIP GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING SAME

HOT DIP GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING SAME

HIGH-STRENGTH STEEL PLATE HAVING EXCELLENT FORMABILITY, TOUGHNESS A...

ZINC-PLATED STEEL SHEET AND MANUFACTURING METHOD THEREOF

ZINC-PLATED STEEL SHEET AND MANUFACTURING METHOD THEREOF

STEEL SHEET AND MANUFACTURING METHOD OF THEREFOR

STEEL SHEET AND MANUFACTURING METHOD THEREFOR

STEEL SHEET AND MANUFACTURING METHOD THEREFOR

HIGH STRENGTH HOT-DIP GALVANIZED STEEL SHEET AND PRODUCTION METHOD...

COLD-ROLLED STEEL SHEET AND HOT-DIP GALVANIZED COLD-ROLLED STEEL SHEET

HOT-DIP GALVANIZED STEEL SHEET

HIGH STRENGTH HOT ROLLED STEEL SHEET

HIGH-STRENGTH COLD-ROLLED STEEL SHEET, HIGH-STRENGTH HOT-DIP GALVAN...

HIGH-STRENGTH STEEL SHEET AND METHOD OF MANUFACTURING THE SAME

HOT-ROLLED STEEL SHEET AND METHOD FOR PRODUCING THE SAME

HOT-DIP GALVANNEALED HOT-ROLLED STEEL SHEET AND PROCESS FOR PRODUCI...