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Masayuki Hirota Patents |
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Inventor: Hirota; Masayuki
Address: Narashino, JP
No. of patents: 8
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 7394668 |
Switching power supply circuit and frequency converter |
July 1, 2008 |
| An object of the present invention is to lower the voltage applied to the starting resistor of the starting circuit in a switching power supply circuit to reduce the power loss especially when the receiving voltage is high and thereby provide a small and inexpensive switching power suppl |
| 7272004 |
Frequency converter |
September 18, 2007 |
| A frequency converter includes a circuit substrate, a housing that covers at least the circuit substrate, a radiating section in which gases at an intake face are exhausted from an exhaust face so as to radiate heat, a fan provided on the exhaust face of the radiating section, and a guid |
| 7206204 |
Electric circuit module |
April 17, 2007 |
| An electric circuit module comprising: an electric device comprising an electric circuit to serve for passage and interruption of electric current, a packing material packing the electric circuit and a plurality of wiring members to electrically connect the electric circuit with an e |
| 7151680 |
Switching power supply circuit and frequency converter |
December 19, 2006 |
| An object of the present invention is to lower the voltage applied to the starting resistor of the starting circuit in a switching power supply circuit to reduce the power loss especially when the receiving voltage is high and thereby provide a small and inexpensive switching power suppl |
| 7054157 |
Frequency converter |
May 30, 2006 |
| Measures are provided to prevent temperature rise caused by that heat generated from power elements, which is radiated inside a housing.In a housing comprising a radiating section and a cooling fan, a guide is provided on a part of the housing to be made longer a predetermined value |
| 6927665 |
Power converter |
August 9, 2005 |
| A low noise, compact and low cost electric power converter employing a compact common mode transformer, and incorporating a line filter can reduce a leakage current, and can maintain predetermined leakage current reduction effect even if installation condition of the electric power c |
| 6873240 |
Power converter |
March 29, 2005 |
| A low noise, compact and low cost electric power converter employing a compact common mode transformer, and incorporating a line filter can reduce a leakage current, and can maintain predetermined leakage current reduction effect even if installation condition of the electric power c |
| 5278001 |
Hydrogen storage alloy, electrode comprising the same and hydrogen storage alloy cell |
January 11, 1994 |
| A hydrogen storage alloy of Ni, Zr, Mn, Ti and at least one other element and at least two phases including a phase which contains at least one kind of Laves structure intermetallic compound, in which when atomic ratios of Ni, Zr, Mn and Ti are "a", "b", "c" and "d", respectively, "a" is |
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