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Niihara
Koichi Niihara, Nagaoka-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20080226894 | YTTRIUM OXIDE-CONTAINING MATERIAL, COMPONENT OF SEMICONDUCTOR MANUFACTURING EQUIPMENT, AND METHOD OF PRODUCING YTTRIUM OXIDE-CONTAINING MATERIAL - There is provided an yttrium oxide-containing material with excellent mechanical characteristics. The yttrium oxide-containing material becomes strong by adding silicon carbide (SiC) and yttrium fluoride (YF | 09-18-2008 |
Koshiro Niihara, Tokyo JP
| Patent application number | Description | Published |
|---|---|---|
| 20120117803 | METHOD FOR MANUFACTURING IMPELLER - There is provided a method for manufacturing an impeller, in which a brazing layer having a necessary thickness can be secured easily while the waste of a brazing filler metal is eliminated. The present invention includes a step X of producing a disc | 05-17-2012 |
Tatsuru Niihara, Haga-Gun JP
| Patent application number | Description | Published |
|---|---|---|
| 20100181139 | ELECTRIC POWER STEERING APPARATUS - In an electric power steering apparatus, a worm gear is structured such that a leading end of a leading end shaft of the worm gear is always pressed and supported by a part in a peripheral direction of a diameter enlarged inner diameter portion of a collar which is urged by an elastically urging body, and is always urged toward a side coming close to a center shaft of a worm wheel. | 07-22-2010 |
Tooru Niihara, Tokyo JP
| Patent application number | Description | Published |
|---|---|---|
| 20100164274 | Shield Machine - The present invention provides a shield machine ( | 07-01-2010 |