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Ariji
Akihiro Ariji, Ohtsu-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20110017660 | HOLLOW-FIBER ULTRAFILTRATION MEMBRANE WITH EXCELLENT FOULING RESISTANCE - An object of the present invention is to provide a hollow-fiber ultrafiltration membrane that can be used in treatment in various aqueous fluids such as water purification, beverage treatment, seawater clarification, and that has excellent fractionation characteristics and permeability, while deterioration of its performance due to passage of time is minimized, and that has excellent recovery of the membrane-separation characteristics by cleaning. The main feature of the hollow-fiber ultrafiltration membrane of the present invention is that the specific surface area of the membrane surface to which raw water is supplied falls within the range from not less than 1.10 to not greater than 1.55. The present invention also provides a process for producing a hollow-fiber ultrafiltration membrane, wherein a heat treatment is conducted under the condition that the membrane having a residual organic solvent content of not greater than 300 mg/g. | 01-27-2011 |
Akihiro Ariji, Shiga JP
| Patent application number | Description | Published |
|---|---|---|
| 20090283469 | POLYVINYLIDENE FLUORIDE HOLLOW YARN TYPE MICROPOROUS FILM AND PROCESS FOR PRODUCTION OF THE SAME - Problems: To provide a polyvinylidene fluoride microporous membrane which has high water permeability and separation performance and is excellent in mechanical and chemical strength; and a process for producing the film. | 11-19-2009 |
Nobuaki Ariji, Kanagawa JP
| Patent application number | Description | Published |
|---|---|---|
| 20090025577 | RAM POSITION DETECTION METHOD, RAM DRIVE METHOD, RAM DRIVE DEVICE, AND PRESS MACHINE HAVING THE RAM DRIVE DEVICE - A ram driving method including the steps of fixing one end of a large-diameter piston rod ( | 01-29-2009 |
Takumi Ariji, Sayama-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20090102315 | QUARTZ CRYSTAL DEVICE - A quartz crystal device includes: a container; a crystal blank hermetically encapsulated in the container; and at least two outside terminals provided on an outer bottom surface of the container and used to surface-mount the quartz crystal device on a wiring board. Each outside terminal has a two-layer structure with a first layer provided on the outer bottom surface and a second layer provided on the first layer and having a flat surface. The second layer has a smaller plane shape than the first layer and is formed on a central part of the first layer at a distance from the perimeter of the first layer. | 04-23-2009 |