Inventor
Yoshiaki Hirota
Inventor
Tokyo, JP
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C21Dprimary
C21DModifying the physical structure of ferrous metals18%
H05BElectric heating18%
Y02PClimate change mitigation technologies in the production or processing of goods18%
B23KSoldering or unsoldering9%
B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling6%
C22CAlloys6%
F27BFurnaces, kilns, ovens or retorts in general6%
F27DDetails or accessories of furnaces, kilns, ovens or retorts, in so far as they are of kinds occurring in more than one kind of furnace6%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form3%
B60BVehicle wheels3%
PatentTitleYear
10,563,282Induction heating device for metal strip202010,568,166Induction heating device for metal strip202010,307,808Electric-resistance-welded pipe welding apparatus201910,160,058Electric resistance welded pipe welding apparatus20189,888,529'Induction heating device for a metal plate'20189,702,019'Quenched steel pipe member, vehicle axle beam using quenched steel pipe member, and method for manufacturing quenched steel pipe member'20179,162,268'Electric-resistance-welded pipe welding apparatus'20158,592,735'Induction heating apparatus'20138,536,498'Induction heating device for a metal plate'20138,502,122'Induction heating system and induction heating method of metal plate'20137,291,230'Grain-oriented electrical steel sheet extremely excellent in film adhesiveness and method for producing the same'20075,865,702'Oil temperature responsive hydraulic control system for an automatic transmission'1999Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1999Patents assigned to AISIN AW CO (1)· patent assignee history
1999Patents assigned to TOYOTA MOTOR CO LTD (1)· patent assignee history
1999Based in Okazaki, JP· patent location history
2007–2020Patents assigned to NIPPON STEEL CORP (3)· patent assignee history
2007–2018Based in Futtsu, JP· patent location history
2013–2020Patents assigned to NIPPON STEEL & SUMITOMO METAL CORP (10)· patent assignee history
2013–2019Patents assigned to HIROTA YOSHIAKI (6)· patent assignee history
2013–2020Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NIPPON STEEL & SUMITOMO METAL CORP | 10 | 2013–2020 |
| HIROTA YOSHIAKIself | 6 | 2013–2019 |
| NIPPON STEEL CORP | 3 | 2007–2020 |
| AISIN AW CO | 1 | 1999 |
| TOYOTA MOTOR CO LTD | 1 | 1999 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 8 | 2013–2020 |
| Futtsu, JP | 3 | 2007–2018 |
| Okazaki, JP | 1 | 1999 |