| Patent application number | Description | Published |
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| 20100004412 | METHOD FOR PREPARING POLYMER BY PRECIPITATION POLYMERIZATION - The present invention provides a method for preparing a polymer by precipitation polymerization, comprising the steps of mixing an antisolvent a), a monomer b), and a catalyst c), and while polymerizing the monomers, simultaneously precipitating a polymer formed by the monomers b) in a solid phase. | 01-07-2010 |
| 20100301957 | RELAXATION OSCILLATOR USING SPINTRONIC DEVICE - Disclosed herein is a relaxation oscillator using a spintronic device. The relaxation oscillator includes a power source unit, a spintronic device, and a capacitor. The power source unit applies power. The spintronic device is driven by the power applied by the power source unit, and has a variable voltage value depending on the intensity of a magnetic field. The capacitor is connected in parallel with the spintronic device, and is discharged when it assumes a minimum-voltage value in the threshold voltage range of the spintronic device and charged when it assumes a maximum voltage value in the threshold voltage range. | 12-02-2010 |
| 20110281048 | RESIN COMPOSITION FOR DISPOSAL RESIN MOLDED PRODUCT, AND DISPOSAL RESIN MOLDED PRODUCT - Disclosed is a resin composition for disposable resin molded product, and a disposable resin molded product that enables preparation of a disposable resin molded product not only maintaining excellent mechanical properties but also having biodegradability entailing an environment-friendly feature. The resin composition for disposable resin molded product comprises a polyalkylene carbonate resin. | 11-17-2011 |
| 20120016101 | POLYLACTIDE RESIN AND PREPARATION METHOD THEREOF - The present invention is directed to an organometallic complex and a catalyst composition capable of producing polylactide resins with improved properties at a higher conversion rate, a method of producing the organometallic complex, polylactide resins having enhanced hydrolysis resistance and heat resistance together with superior mechanical properties, a preparation process therefor, and polylactide resin compositions including the same. | 01-19-2012 |
| 20130066024 | POLYSILOXANE-POLYLACTIDE BLOCK COPOLYMER AND PREPARATION METHOD THEREOF - The present invention relates to a polysiloxane-polylactide block copolymer and a preparation method thereof, in which the polysiloxane-polylactide block copolymer has improved impact resistance and flexibility, compared to the conventional polylactide resins and can be prepared by ring-opening polymerization of lactide monomers in the presence of a polymerization initiator of polysiloxane. | 03-14-2013 |
| Patent application number | Description | Published |
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| 20120025598 | HYDRAULIC BRAKE SYSTEM - Disclosed is a hydraulic brake system capable of reducing periodic pressure pulsation caused by operation of a piston. The hydraulic brake system includes a master cylinder generating braking hydraulic pressure by operation of a brake pedal, a wheel brake provided to each of front right and left wheels and rear right and left wheels of a vehicle to receive the braking hydraulic pressure from the master cylinder to generate braking force, a solenoid valve provided to each of an inlet and an outlet of each of the wheel brakes to control flow of the braking hydraulic pressure, a low pressure accumulator Jo temporarily storing oil, which is ejected from the wheel brakes during operation of the solenoid valves, a pump compressing the oil stored in the low pressure accumulator such that the oil is ejected towards the wheel brakes or the master cylinder as needed, and an orifice disposed near an outlet port of the pump. Further, a damper unit is disposed between the outlet port of the pump and the orifice to reduce pressure pulsation caused by operation of the piston, thereby improving product reliability through noise reduction during brake control. | 02-02-2012 |
| 20120025599 | HYDRAULIC BRAKE SYSTEM - Disclosed is a hydraulic brake system capable of reducing pressure pulsation caused by operation of a piston pump driven by a hydraulic motor in operation of the hydraulic brake system. The hydraulic brake system includes a master cylinder generating braking hydraulic pressure by operation of a brake pedal, a wheel brake provided to each of front right and left wheels and rear right and left wheels of a vehicle and receiving the braking hydraulic pressure from the master cylinder to generate braking force, an electronic valve provided to each of an inlet and an outlet of each of the wheel brakes to to control flow of the braking hydraulic pressure, a low pressure accumulator temporarily storing oil, which is ejected from the wheel brake during a pressure reduction braking operation in which the electronic valves are operated, a pump compressing the oil stored in the low pressure accumulator such that the oil is ejected towards the wheel brake or the master cylinder as needed, an orifice disposed near an outlet port of the pump, a first hydraulic circuit connecting a first port of the master cylinder to two wheel brakes to control transmission of hydraulic pressure, and a second hydraulic circuit connecting a second port of the master cylinder to the remaining two wheel brakes to control transmission of hydraulic pressure, wherein a damper unit is disposed between the outlet port of the pump and the orifice to relieve a pulsation phenomenon. Here, the damper unit allows main flow passages of the first and second hydraulic circuits to communicate with each other therethrough. | 02-02-2012 |
| 20120043805 | HYDRAULIC BRAKE SYSTEM - A hydraulic brake system includes: a master cylinder forming a braking hydraulic pressure according to an operation of a brake pedal; wheel brakes provided in front and rear wheels of a vehicle to receive the braking hydraulic pressure of the master cylinder and exert a braking force; a first hydraulic circuit controlling an oil pressure transmission by connecting a first port of the master cylinder and two wheel brakes; a second hydraulic circuit controlling an oil pressure transmission by connecting a second port of the master cylinder and remaining two wheel brakes; a hydraulic block communicating main passages of the first and second hydraulic circuits with each other, the hydraulic block being provided with a communication passage having one side opened, such that the first and second hydraulic circuits pass through the communication passage; a pump mounted on one side of each of the main passages, with reference to the hydraulic block, to discharge oil through the hydraulic block to the wheel brake side or the master cylinder side; an orifice mounted on each of the other side of the main passages, with reference to the hydraulic block; and a damper member including: a piston embedded into the hydraulic block and reciprocating the communication passage, the piston having stepped portions on both ends thereof; a cap sealing the opened side of the communication passage and mounted on the hydraulic block; and a spring mounted on each of the stepped portions to elastically support the piston between the cap and the closed side of the communication passage. Since the pressure pulsation generated by the driving of the pump is attenuated by the damper member, the overall operating noise during the brake control is reduced and the reliability of products is increased. | 02-23-2012 |
