Tokumasa
Tokumasa Hara, Kanagawa-Ken JP
| Patent application number | Description | Published |
|---|---|---|
| 20120092927 | MEMORY SYSTEM - A memory system includes a NAND flash memory having a page buffer capable of holding a page of data and a cell array having a plurality of pages. The system also includes a plurality of memory portions electrically connected to the NAND flash memory via a data bus, and a controller for controlling the NAND flash memory and the plurality of memory portions. A width of the data bus is less than a size of the page of data. When any one of a write operation and a read operation is performed on the NAND flash memory, the controller exchanges data held in the page buffer and data held in one memory portion of the plurality of memory portions. | 04-19-2012 |
Tokumasa Hara, Kawasaki Kanagawa JP
| Patent application number | Description | Published |
|---|---|---|
| 20150262630 | SEMICONDUCTOR MEMORY DEVICE - A memory device includes first and second memory cell arrays, and a control circuit configured to output first information indicating whether the first memory cell array is in a ready state in which the control circuit is ready to receive a command to access the first memory cell array or a busy state in which the control circuit is not ready to receive the command to access the first memory cell array, and second information indicating whether the second memory cell array is in a ready state in which the control circuit is ready to receive a command to access the second memory cell array or a busy state in which the control circuit is not ready to receive the command to access the second memory cell array. | 09-17-2015 |
Tokumasa Ishida, Hyogo JP
| Patent application number | Description | Published |
|---|---|---|
| 20150126767 | HYDROXYALKYL (METH)ACRYLATE AND METHOD FOR PRODUCING SAME - The objective of the present invention is to provide a highly stable hydroxyalkyl(meth)acrylate. The hydroxyalkyl(meth)acrylate according to the present invention is characterized in that a contained amount of dialkylene glycol is not more than 0.05 mass %. | 05-07-2015 |
| 20150225330 | HYDROXYALKYL ACRYLATE AND METHOD FOR PRODUCING SAME - The hydroxyalkyl acrylate according to the present invention is characterized in that a content amount of an ester generated from acrylic acid dimer and an alkylene oxide is not more than 0.10 mass %. The method for producing a hydroxyalkyl acrylate according to the present invention is characterized in comprising the step of reacting acrylic acid with an alkylene oxide in the presence of a catalyst, wherein a content amount of acrylic acid dimer in the raw material acrylic acid is not more than 3.00 mass %. | 08-13-2015 |