Kyoto, Japan

Murata Manufacturing Co., Ltd. is a Japanese manufacturer of electronic components, based in Nagaokakyo, Kyoto. Honorary Chairman Akira Murata started Murata Manufacturing as a personal venture in October, 1944. On December 1950 reorganized the company into Murata Manufacturing Co., Ltd. with paid-in Capital ¥1 million.Murata Manufacturing is a leading company primarily involved in the manufacturing of ceramic passive electronic components, primarily capacitors, and it has an overwhelming share worldwide in ceramic filters, high-frequency parts, and sensors. As of March 31, 2013 Murata Manufacturing has 24 subsidiaries in Japan and 52 overseas in the United States, Canada, Mexico, Brazil, Germany, France, Italy, the United Kingdom, Switzerland, the Netherlands, Spain, Hungary, Finland, China, Taiwan, South Korea, Singapore, Malaysia, the Philippines, Thailand, Hong Kong, Vietnam and India.On April 13, 2012, Murata announced a deal to acquire RF Monolithics for $1.78 per share.On August 23, 2014, Murata announced the acquisition of Peregrine Semiconductor Corporation. Wikipedia.

SEARCH FILTERS
Time filter
Source Type

Patent
Murata Manufacturing Co. | Date: 2017-01-04

A microelectromechanical device that comprises a first structural layer, and a movable mass suspended to a primary out- of plane motion relative the first structural layer. A cantilever motion limiter structure is etched into the movable mass, and a first stopper element is arranged on the first structural layer, opposite to the cantilever motion limiter structure. Improved mechanical robustness is achieved with optimal use of element space.


Patent
Murata Manufacturing Co. | Date: 2017-03-29

The method of the invention is concerned with creating MEMS structures by selectively etching a silicon wafer that is patterned by using a masking layer for defining the structural features of a MEMS device. The method comprises depositing and patterning a first mask (2) on a silicon wafer (1) to define desired first areas on the wafer (1) to be etched. First trenches (3a, 3b) are etched on parts of the wafer (1) not covered by the first mask (2) in a first trench etching. The first trenches (3a, 3b) are then filled with a deposit layer (4). A part of the deposit layer (4) is removed on desired second areas to be etched and the rest of it is left on areas to function as a second mask (4) in order to define final structures. Parts of the wafer (1) on the desired second areas is etched in a second trench etching, and said second mask (4) is removed. The method of the invention can be used for manufacturing a gyroscope by dimensioning the structures suitable for a gyroscope or for manufacturing an accelerator by dimensioning the structures suitable for an accelerator.


Patent
Murata Manufacturing Co. | Date: 2017-01-27

First no-electrode-forming areas where first wiring electrodes such as internal wiring electrodes and external connection terminals are not formed are set to ranges that overlap inductor components in a plan view of at least one of dielectric layers of a first substrate, and second no-electrode-forming areas where second wiring electrodes such as internal wiring electrodes and mounting electrodes are not formed are set to ranges that overlaps the inductor components in a plan view of at least one of dielectric layers of a second substrate. Accordingly, reduction of the inductance of the inductor components, which is caused by the first and second wiring electrodes crossing the magnetic field of the inductor components, can be suppressed. Therefore, the overall component size can be reduced without deteriorating the Q value of the inductor components by configuring an RF component with a stacking structure.


Patent
Murata Manufacturing Co. | Date: 2017-01-31

Connection patterns of plural diodes include a first series connection pattern and a second series connection pattern. The first series connection pattern extends from an input terminal in the X direction. The second series connection pattern has a portion through which a current flows to approach the input terminal. The first series connection pattern includes a first diode, which is the first diode counted from the input terminal. The second series connection pattern includes a second diode, which is the last diode counted from the input terminal. The second diode is disposed separately from the first diode with some distance therebetween in the Y direction. An N-type region of the first diode and a P-type region of the second diode directly oppose each other as viewed in a planar direction.


A ceramic electronic component includes a ferrite material magnetic body part and a Cu conductive part, the ferrite containing 20 to 48% trivalent Fe in terms of Fe_(2)O_(3 )and divalent Ni. The ferrite can contain Mn so that it is less than 50% of the total of Fe and Mn in terms of Mn_(2)O_(3 )and Fe_(2)O_(3). The magnetic and conductive parts are co-fired at a pressure not exceeding the equilibrium oxygen partial pressure of CuCu_(2)O thereby ensuring insulating performance and favorable electrical characteristics.


Patent
Murata Manufacturing Co. | Date: 2017-01-30

A ceramic electronic component includes a rectangular or substantially rectangular parallelepiped-shaped stack in which a ceramic layer and an internal electrode are alternately stacked and an external electrode provided on a portion of a surface of the stack and electrically connected to the internal electrode. The external electrode includes an inner external electrode covering a portion of the surface of the stack and including a mixture of a resin component and a metal component and an outer external electrode covering the inner external electrode and including a metal component. A volume occupied by the resin component in the inner external electrode is within a prescribed range.


Patent
Murata Manufacturing Co. | Date: 2017-01-11

A fluid control device (10) having a flow passage passing through a pump chamber (45) and a valve chamber (40) includes a vibration unit (37) that vibrates to cause fluctuation of an internal pressure in the pump chamber (45), a valve bottom plate (23) facing the valve chamber (40) and having a communication hole (43) communicating with the pump chamber (45) at one end and communicating with the valve chamber (40) at the other end, and a valve top plate (21) facing the valve chamber (40) to be opposed to the valve bottom plate (23) and having a discharge hole (41) communicating with the valve chamber (40). The communication hole (43) and the discharge hole (41) are not opposed to each other, and the valve bottom plate (23) is elastically deformed by transmission of vibration of the vibration unit (37) thereto.


Provided are a positive electrode for a lithium ion secondary battery which has great charge/discharge rate characteristics and the ability to inhibit oxidative decomposition of a non-aqueous electrolytic solution, and a lithium ion secondary battery using the positive electrode for a lithium ion secondary battery. In a positive electrode for a lithium ion secondary battery, including a positive electrode combination material including: a positive electrode active material that produces a potential of 4.5 V or higher on the basis of metal lithium; a conduction aid; and a binder, for the binder, a binder is used which contains a water-based binder as its main constituent, and the sum SE of the surface area SA of the positive electrode active material in the positive electrode combination material and the surface area SC of the conduction aid therein is 90 cm^(2)/cm^(2) or more and 400 cm^(2)/cm^(2) or less per unit coated area of the positive electrode combination material. As the water-based binder, a binder is used which includes a substance having a carboxyl group. As the water-based binder, a binder is used which includes a copolymer including a carboxymethyl cellulose, a polyacrylic acid, an acrylic acid, a metal salt or ammonium salt thereof, or at least one selected from the group thereof.


Patent
Murata Manufacturing Co. | Date: 2017-09-27

While reducing an increase in the cost of an on-vehicle battery for use in an on-vehicle power supply device, the on-vehicle battery is reduced in size and weight. An on-vehicle battery 11 includes a lead storage battery 13 and a second storage battery 14. The second storage battery 14 is connected in parallel with the lead storage battery 13. The second storage battery 14 has a positive electrode and a negative electrode. The positive electrode includes, as a positive electrode active material, a spinel-type lithium-nickel-manganese oxide. The negative electrode includes, as a negative electrode active material, at least one of graphite, soft carbon, hard carbon, and an alloy-based material containing an Si element.


Patent
Murata Manufacturing Co. | Date: 2017-09-27

A sensor device and a method for manufacturing the sensor device. The sensor device is equipped with an impact element that includes an inner part of dielectric bulk material and an outer part of diamond-like coating material. The inner part is made to be lower at the edges than in the middle, and the outer part is formed of a diamond-like coating layer that covers the inner part. The DLC coated impact element is mechanically more robust than the rectangular prior art structures. Furthermore, the tapered form of the impact element improves conductivity of the DLC coating such that discharge of static buildup in the impact element is effectively enabled.

Loading Murata Manufacturing Co. collaborators
Loading Murata Manufacturing Co. collaborators