Asahi Kasei Kogyo Kabushiki Kaisha

Sony Corporation

Renesas Electronics Corporation

Asahi Kasei Kabushiki Kaisha

Hiroshi Tomiyama

Katsuya Shimizu

Shoji Akiyama

Shinya Matsumoto

A semiconductor memory device includes: a plurality of RAM macros; and a test control circuit configured to correlate the plurality of RAM macros with a plurality of memory test execution periods. The test control circuit outputs control signals to the plurality of RAM macros such that one RAM macro of the plurality of RAM macros is tested during one memory test execution period of the plurality of memory test execution periods, the one RAM macro being correlated with the one memory test execution period.

Semiconductor memory device, memory test method and computer program for designing program of semiconductor memory device

Polyamide resin pellets which comprise: 100 parts by weight of a polyamide resin; from 0.01 to 1.0 part by weight of lubricant A, which comprises at least one ester of a higher aliphatic carboxylic acid with a higher alcohol; and from 0.01 to 1.0 part by weight of lubricant B. which comprises at least one higher aliphatic carboxylic acid metal salt, wherein lubricant A is present inside the pellets. Also disclosed are the polyamide resin pellets further comprising lubricant C, which comprises a higher aliphatic carboxylic acid amide.

Polyamide resin composition

The present invention provides polyhexamathylene adipamide fibers significantly excellent in thermal yellowing resistance, and a process for producing the same. The improved polyhexamethylene adipamide fibers have adaptability to fibers for clothing which adaptability is comparable to that of poly-&egr;-capramide fibers and polyester fibers. The improved polyhexamethylene adipamide fibers can be obtained by either (1) melt spinning a polyhexamethylene adipamide simultaneously containing 2,4-bis(alkylthio)-6-(3,5-dialkyl-4-hydroxyanilino)-1,3,5-triazine and a compound selected from the group consisting of phosphorous acid, hypophosphorous acid and derivatives of these acids, or (2) melt spinning the fibers having the sum of an amino end group concentration (&lsqb;&mdash;NH,)&rsqb;) and a carboxyl end group concentration (&lsqb;&mdash;COOH&rsqb;) of 70 to 200 meq/kg, satisfying the condition: &lsqb;&mdash;COOH&rsqb;&lE;60 meq/kg, and containing from 0.005 to 0.5% by weight of an alkali metal compound, or (3) melt spinning under conditions wherein the melt spinning in (1) and that in (2) are combined.

Polyhexamethyleneadipamide fiber and composition

Polyhexamethylene adipamide fibers and process for producing the same

A machine for forming a protective film on optical disks transports disks through stages in which a protective film is applied to their surfaces. The protective film is then set while the disks are located upon disk trays specifically configured to promote setting of the portion of the protective film overlying the outer circumferential end faces of the disks. The disk tray is provided with reflective surfaces which reflect ultraviolet rays against the outer circumferential end faces of the disks.

Growing community of inventors

Kanagawa, Japan

Hiroshi Tomiyama