Hiroyasu Fujii
50Patents
6h-index
60Co-inventors
75Inventor score
Filing activity: Jul 18, 1991 → Mar 30, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7471182B2 | Core having superior end face insulation and method of treating core end faces to give insulation coating | Electricity | 27 | Active |
| US5565272A | Grain oriented silicon steel sheet having excellent primary film properties | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5961744A | Grain oriented silicon steel sheet having low core loss and method of manufacturing same | Chemistry; Metallurgy | 15 | Expired |
| US7736449B2 | High-strength hot-dip galvanized steel sheet and method for producing the same | Emerging Cross-Sectional Technologies | 9 | Active |
| US7173509B2 | Core having superior end face insulation and method of treating core end faces to give insulation coating | Electricity | 7 | Expired |
| US6613160B2 | Method to produce grain-oriented electrical steel sheet having high magnetic flux density | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5509976A | Method for producing a grain-oriented electrical steel sheet having a mirror surface and improved core loss | Chemistry; Metallurgy | 6 | Expired |
| US7850792B2 | Grain-oriented electrical steel sheet having insulating film not containing chromium and insulating film agent of same | Electricity | 5 | Expired |
| US7294412B2 | High-strength hop-dip galvanized steel sheet | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5129965A | Method of producing grain oriented silicon steel sheets each having a low watt loss and a mirror surface | Chemistry; Metallurgy | 4 | Expired |
| US6461741B1 | Grain-oriented electromagnetic steel sheet with excellent coating properties and process for its manufacture | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7998284B2 | Grain-oriented electrical steel sheet having high tensile strength insulating film and method of treatment of such insulating film | Electricity | 4 | Active |
| US5782998A | Grain oriented electrical steel sheet having specular surface | Chemistry; Metallurgy | 4 | Expired |
| US5190597A | Process for producing grain-oriented electrical steel sheet having improved magnetic and surface film properties | Chemistry; Metallurgy | 3 | Expired |
| US10665372B2 | Electrical steel sheet and manufacturing method thereof | Emerging Cross-Sectional Technologies | 3 | Active |
| US10610964B2 | Grain-oriented electrical steel sheet causing low core loss and low magnetostriction | Chemistry; Metallurgy | 2 | Active |
| US6713187B2 | Grain-oriented silicon steel sheet excellent in adhesiveness to tension-creating insulating coating films and method for producing the same | Emerging Cross-Sectional Technologies | 2 | Expired |
| US8268097B2 | Grain-oriented electrical steel sheet and producing method therefor | Electricity | 1 | Active |
| US11742129B2 | Adhesively-laminated core, manufacturing method thereof, and electric motor | Electricity | 1 | Active |
| US9984801B2 | Electrical steel sheet and manufacturing method thereof | Emerging Cross-Sectional Technologies | 1 | Active |
| US7364629B2 | Method for manufacturing grain-oriented silicon steel sheets with mirror-like surface | Chemistry; Metallurgy | 1 | Expired |
| US11948710B2 | Non-oriented electrical steel sheet and method for producing same | Chemistry; Metallurgy | 0 | Active |
| US12359275B2 | Method for manufacturing grain-oriented electrical steel sheet | Emerging Cross-Sectional Technologies | 0 | Active |
| US10190219B2 | Electrical steel sheet | Chemistry; Metallurgy | 0 | Active |
| US11346005B2 | Grain-oriented electrical steel sheet | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.