Abstract: The present invention provides a method of producing a polymer, which comprises the step of performing a polymerization reaction using, as a starting material, an organic acid obtained by allowing a microorganism or a treated cell thereof to act on an organic raw material, wherein said microorganism has an ability to produce an organic acid and has been modified so as to produce less aromatic carboxylic acid as compared to an unmodified strain.

Abstract: Provided is a drum stand that includes a first pipe holding a percussion instrument, a second pipe to which the first pipe is connected, and a leg member supporting the second pipe on a floor surface. The first pipe is slidable along an axial direction of the second pipe. A lower end of the second pipe is in contact with the floor surface. The leg member is in contact with the floor surface on one side in a horizontal direction relative to the lower end of the second pipe and supports the second pipe in a state that an upper end of the second pipe is on the one side in the horizontal direction relative to the lower end of the second pipe.

Abstract: The present invention provides an electronic pad, including: a struck body, including a first struck portion and a second struck portion; a first and a second vibration sensor, detecting a vibration of the first struck portion and the second struck portion. In the electronic pad, a partitioning portion is interposed between the first struck portion and the second struck portion for partitioning. The partitioning portion includes: a first upright portion, protruding further than at least one of an upper surface of the first struck portion and a lower surface opposite the upper surface; a second upright portion, separated from the first upright portion by a predetermined spacing and protruding further than at least one of an upper surface of the second struck portion and a lower surface opposite the upper surface; and a connection portion connected between the first upright portion and the second upright portion.

Abstract: The present invention provides an electronic pad, including: a struck body, including a first struck portion and a second struck portion; a first and a second vibration sensor, detecting a vibration of the first struck portion and the second struck portion. In the electronic pad, a partitioning portion is interposed between the first struck portion and the second struck portion for partitioning. The partitioning portion includes: a first upright portion, protruding further than at least one of an upper surface of the first struck portion and a lower surface opposite the upper surface; a second upright portion, separated from the first upright portion by a predetermined spacing and protruding further than at least one of an upper surface of the second struck portion and a lower surface opposite the upper surface; and a connection portion connected between the first upright portion and the second upright portion.

Abstract: A pedal device for an electronic percussion instrument is provided, wherein first and second detection means for detecting a rotation of a pedal by different methods are alternatively disposed in a base. The pedal has a pressing part on a lower surface side. The base includes a first portion located under the pressing part for supporting the first detection means, and a second portion located around the first portion for supporting the second detection means. The first portion supports the first detection means such that a first pressed part of the first detection means is disposed on a displacement trajectory of the pressing part that displaces with the rotation of the pedal, and the second portion disposes the second detection means such that a second pressed part of the second detection means is disposed on the displacement trajectory of the pressing part.

Abstract: Provided is a drum stand that includes a first pipe holding a percussion instrument, a second pipe to which the first pipe is connected, and a leg member supporting the second pipe on a floor surface. The first pipe is slidable along an axial direction of the second pipe. A lower end of the second pipe is in contact with the floor surface. The leg member is in contact with the floor surface on one side in a horizontal direction relative to the lower end of the second pipe and supports the second pipe in a state that an upper end of the second pipe is on the one side in the horizontal direction relative to the lower end of the second pipe.

Abstract: A vibration isolating table is adapted to be disposed between a vibrating body, which vibrates with the playing of a musical instrument, and a floor for suppressing vibration or shock generated by the vibrating body from transmitting to the floor, wherein the vibration isolating table includes: a rigid plate including a plate-shaped member having predetermined rigidity; and a main body portion supporting the rigid plate in a floating condition above the floor. The main body portion is formed of an elastic body having higher elasticity than the rigid plate and includes a bulge means which bulges in a shape tapered from one side to the other side, wherein a lower surface side of the rigid plate is supported by the one side or the other side of the bulge means.

Abstract: A percussion attachment is provided to be detachably installed on a percussion instrument. The percussion attachment includes a main body part having a struck part to be struck by a player, an extended part extending from a side surface of the main body part to be locked to one of the tension bolts, and a restricting part protruding from the side surface of the main body part near the extended part and supporting the percussion instrument to restrict a displacement of the main body part in a state that the extended part is tightened together with the hoop by one of the tension bolts.

Abstract: A percussion instrument includes at least one pad and a support frame supporting the pad. The support frame includes a central vertical frame, a left vertical frame located in a left rear direction of the central vertical frame when viewed from the player side, a right vertical frame located in a right rear direction of the central vertical frame when viewed from the player side, a left transverse frame extending between the central vertical frame and the left vertical frame and connecting the central vertical frame with the left vertical frame, and a right transverse frame extending between the central vertical frame and the right vertical frame and connecting the central vertical frame with the right vertical frame.

Abstract: A pedal device for a musical instrument is provided. The pedal device includes a pedal to be operated by a player and a biasing member generating a biasing force for restoring the pedal to an initial position. The pedal device further includes a rotating member that rotates around a rotation axis along with the operation of the pedal. A plurality of engaging parts are disposed in the rotating member. The engaging parts extend substantially in parallel to the rotation axis and are configured for engaging with a weight, and the engaging parts are respectively positioned at different distances with respect to the rotation axis.

Abstract: Provided are processes for producing high-purity succinic acid from a succinic-acid-containing liquid through crystallization.

Abstract: A vibration isolating table is adapted to be disposed between a vibrating body, which vibrates with the playing of a musical instrument, and a floor for suppressing vibration or shock generated by the vibrating body from transmitting to the floor, wherein the vibration isolating table includes: a rigid plate including a plate-shaped member having predetermined rigidity; and a main body portion supporting the rigid plate in a floating condition above the floor. The main body portion is formed of an elastic body having higher elasticity than the rigid plate and includes a bulge means which bulges in a shape tapered from one side to the other side, wherein a lower surface side of the rigid plate is supported by the one side or the other side of the bulge means.

Abstract: A rod-shaped electronic percussion instrument is provided. A rod-shaped percussion instrument, which has a striking surface made of an elastic material in a substantially rectangular shape when viewed from above, is characterized in including: a plate-shaped member, which is made of a hard material in a substantially rectangular shape and is elastically supported by a position facing a bottom surface side of the striking surface; and two sensors, which are disposed on a surface side of the plate-shaped member and detect a vibration due to striking on the striking surface, wherein the two sensors are connected to electrically combine detection signals detected by the sensors and output the same.

Abstract: A percussion instrument that suppresses erroneous detection by a rim sensor includes a first plate affixed to a frame, a second plate elastically supported on the first plate by one or more elastic members, and a rim sensor attached to the second plate. Large vibrations of the frame from an impact of a strike on the rim are transmitted to the second plate, and the rim sensor provides an output corresponding to the striking force. Also, vibrations of the frame generated by striking sound or external sound is attenuated by the elastic member, to suppress transmission of such vibrations to the second plate.

Abstract: A wiring board includes an insulation layer, and a conductive pattern formed on the insulation layer having a repaired disconnected portion. The repaired disconnected portion has a first conductive layer connecting disconnected edges of the conductive pattern and a second conductive layer covering the first conductive layer, the first conductive layer has a first electrical resistivity which is set higher than an electrical resistivity of the conductive pattern, and the second conductive layer has a second electrical resistivity which is set lower than the first electrical resistivity of the first conductive layer.

Abstract: A percussion instrument includes at least one pad and a support frame supporting the pad. The support frame includes a central vertical frame, a left vertical frame located in a left rear direction of the central vertical frame when viewed from the player side, a right vertical frame located in a right rear direction of the central vertical frame when viewed from the player side, a left transverse frame extending between the central vertical frame and the left vertical frame and connecting the central vertical frame with the left vertical frame, and a right transverse frame extending between the central vertical frame and the right vertical frame and connecting the central vertical frame with the right vertical frame.