Abstract: Disclosed is a buprenorphine percutaneous absorption preparation comprising a backing having formed on one side thereof a pressure-sensitive adhesive layer containing at least one of buprenorphine and a salt thereof, wherein the pressure-sensitive adhesive layer contains an acrylic copolymer and crosslinked acrylic copolymer particles. The buprenorphine percutaneous absorption preparation has excellent pressure-sensitive adhesive characteristics and exerts excellent percutaneous absorption property.

Abstract: The present invention provides a percutaneous absorption preparation which has excellent pressure-sensitive adhesive characteristics and exerts excellent percutaneous absorption property. A crosslinking agent is added to a solution of an acrylic copolymer prepared by copolymerizing a (meth)acrylic acid alkyl ester with a functional monomer, and the acrylic copolymer is partially crosslinked. A composition containing the crosslinked acrylic copolymer is pulverized to prepare a pressure-sensitive adhesive solution comprised of the acrylic copolymer containing crosslinked acrylic copolymer particles. Thereafter, a drug for percutaneous absorption use, a percutaneous penetration enhancer are added to the pressure-sensitive adhesive solution, thereby producing the percutaneous absorption preparation.

Abstract: A percutaneous absorption preparation which is excellent in the skin penetration of a non-narcotic analgesic buprenorphine and can sustain a high blood level in a stable state over a long period of time is provided. The percutaneous absorption preparation for administrating buprenorphine hydrochloride and/or buprenorphine, which comprises a support having on one surface thereof a plaster layer containing a pressure-sensitive adhesive, buprenorphine hydrochloride and/or buprenorphine, and a penetration enhancer, wherein the penetration enhancer comprises a combination of a monoglyceride of a fatty acid having 6 to 8 carbon atoms and isopropyl myristate, and the plaster layer contains at least 10% by weight of a monoglyceride off fatty acid having 6 to 8 carbon atoms and at least 5% by weight off isopropyl myristate, with the proviso that the content of the whole penetration enhancer ranges from 25 to 50% by weight.

Abstract: A vermin exterminating element contains a culture carrier which includes nonwoven cloth or woven cloth coated or impregnated with medium components for cultivating a microorganism and with a culture solution of a vermin infectious microorganism, wherein the vermin exterminating element is dried after cultivating the vermin infectious microorganism, and the nonwoven cloth or woven cloth has a thickness of 1.8 mm or more and has a base weight of at least 100 g/m.sup.2.

Abstract: A micro stepping motor for use in compact electronic watches comprises a magnetic core, a coil winding wound on the magnetic core, and a one-piece stator connected to the magnetic core to define therewith a closed magnetic flux path. The stator has a necked portion defining a region of reduced cross-sectional area along its length, and a hole extends through the stator at the center of the necked portion. A rotor having at least one pair of magnetic poles is rotatably disposed within the stator hole with an air gap therebetween. The rotor rest positions are determined by either a pair of protrusions extending into the air gap at diametrically opposed sites about the stator hole, or a pair of recesses opening into the air gap at diametrically opposed sites about the stator hole.

Abstract: A flat coreless motor and tachogenerator assembly comprises a rotary motor comprised of a disk-shaped rotor having a plurality of coreless coils, a shaft connected to the rotor, a stator magnet magnetically coupled to the rotor, and a housing containing therein the rotor and stator magnet. The shaft is rotatably supported at one end by a bearing holder which has a closed end portion and a tubular portion extending from the closed end portion into the housing. A bearing disposed within the closed end portion of the bearing holder rotatably mounts the end of the shaft. A tachogenerator is disposed between the motor and the bearing and comprises a tachogenerator rotor connected to the shaft and positioned within the interior of the bearing holder tubular portion, and a tachogenerator stator disposed within the interior of the bearing holder tubular portion in spaced-apart magnetically coupled relationship with respect to the tachogenerator rotor.

Abstract: A micro stepping motor for driving the hands of an analog electronic watch comprises a coil wound on a magnetic core, a magnetic stator connected to the core to define therewith a magnetic flux path, and a magnetized rotor rotatably disposed in an opening of the stator. The magnetic core has a higher saturated magnetic flux density and a smaller size than that of the magnetic stator thereby enabling construction of motors of smaller size and higher electric power efficiency than would otherwise be possible if the magnetic core and stator had the same value of saturated magnetic flux density.

Abstract: A micro stepping motor for use in compact watches and the like comprises a magnetic core, a coil winding wound on the magnetic core, and a stator formed as one rigid body and connected to the magnetic core to define therewith a closed magnetic flux path. The stator has a necked portion along its length and a hole extends through the stator at the center portion of the necked portion. A rotor having at least one pair of magnetic poles is rotatably disposed within the stator hole with an air gap therebetween. The rotor rest position is determined by either a protrusion on the stator extending into the air gap forming a region of minimum reluctance or a recess in the stator opening into the air gap forming a region of maximum reluctance for the rotor flux.