US20070169283A1 - Washing machine and method for controlling the same - Google Patents

Washing machine and method for controlling the same Download PDF

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Publication number
US20070169283A1
US20070169283A1 US11/475,055 US47505506A US2007169283A1 US 20070169283 A1 US20070169283 A1 US 20070169283A1 US 47505506 A US47505506 A US 47505506A US 2007169283 A1 US2007169283 A1 US 2007169283A1
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US
United States
Prior art keywords
washing
drum
temperature
water
satisfied
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/475,055
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English (en)
Inventor
Sung Kim
Hyun Kim
Byoung Yang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, HYUN SOOK, KIM, SUNG HOON, YANG, BYOUNG YULL
Publication of US20070169283A1 publication Critical patent/US20070169283A1/en
Abandoned legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/36—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of washing
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/16—Washing liquid temperature
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps

Definitions

  • the present invention relates to a washing machine for washing delicate fabrics, such as wool and silk, and a method for controlling the same.
  • a drum washing machine vertically moves laundry together with washing water along the inner circumferential surface of a drum, which is horizontally disposed, according to the alternate rotation of the drum in the clockwise and counterclockwise directions, thereby washing the laundry.
  • drum washing machines also have a drying function.
  • the drum washing machine includes an electric heater for heating air, and a duct for circulating the heated air.
  • Korean Patent Laid-open Publication No. 2005-0101788 (dated Oct. 25, 2005) discloses such a drum washing machine.
  • Korean Patent Laid-open Publication No. 2004-0085507 discloses a drum washing machine, which washes laundry using washing water heated to a high temperature in a short period of time by supplying steam of a high temperature to the inside of a tub in order to increase washing capacity.
  • a washing machine having at least one out of a function of drying laundry using an electric heater, a function of heating washing water so as to increase the temperature of the washing water, and a function of supplying steam of a high temperature, although one washing operation has been finished, the temperature in a drum may be considerably elevated, and thus, a long cooling time is required until the temperature in the drum is similar to the temperature of external air.
  • a wool course is selected by a user through an input unit provided on a main body of the washing machine under the condition that laundry is placed into a drum (1).
  • the drum is rotated and the weight of the laundry is sensed (2), and washing water is supplied to the drum in consideration of the weight of the laundry (3). Thereafter, the drum is rotated and the laundry in the drum is washed (4).
  • the conventional washing machine does not consider the temperature in the drum.
  • delicate fabrics such as wool and silk
  • washing water is supplied from the outside of the washing machine to the drum
  • the delicate fabrics heated by air of a high temperature in the drum contacts the cold washing water.
  • the delicate fabrics shrink or deform. Sizes and characteristics of the fabrics are changed due to the shrinkage or deformation of the delicate fabrics. Accordingly, the conventional washing machine has a limit in washing the delicate fabrics, such as wool and silk.
  • one aspect of the invention is to provide a washing machine, which satisfactorily washes delicate fabrics without the influence of an earlier washing operation, and a method for controlling the same.
  • Another aspect of the invention is to provide a washing machine, which performs a washing operation of delicate fabrics in an appropriate condition when the temperature in a drum is elevated, and a method for controlling the same.
  • the present invention provides a washing machine having a drying device for generating an air current to dry laundry, including: a drum forming a washing space; a first temperature sensor for sensing the temperature of washing water; a second temperature sensor for sensing the temperature in the drum; and a controller for determining whether or not a washing condition for washing delicate fabrics is satisfied based on the temperature in the drum and the temperature of the washing water, and controlling the drying device when it is determined that the washing condition is not satisfied, so that a washing operation of the delicate fabrics is performed after the washing condition is satisfied.
  • the controller may determine that the washing condition is satisfied when a difference of temperatures between the inside of the drum and the washing water is less than a predetermined temperature.
  • the controller may perform a cooling operation for lowering the temperature in the drum when the temperature in the drum is higher than a reference temperature in the determination of the washing condition.
  • the drying device may include an air blast fan for generating the air current; a duct for guiding the air current to the inside of the drum; a channel for supplying air, discharged from the inside of the drum, to the duct; and a cooling water spraying unit for spraying cooling water to the channel; and the controller may operate the air blast fan and supply the cooling water through the cooling water spraying unit, when the cooling operation is required.
  • the controller may include a counter for performing the cooling operation for a predetermined time.
  • the controller may perform the washing operation of the delicate fabrics when the washing condition is satisfied by the cooling operation.
  • the washing machine may further include a heater for heating the washing water, wherein the controller controls the heater so that the washing water is heated by the heater, when the washing condition is not satisfied by the cooling operation.
  • the controller may perform the washing operation of the delicate fabrics when the difference of temperatures between the inside of the drum and the washing water is less than the predetermined temperature.
  • the delicate fabrics may include wool and silk.
  • the present invention provides a method for controlling a washing machine having a drying device for generating an air current to dry laundry, including: selecting a washing course for washing delicate fabrics; sensing the temperature in a drum forming a washing space and the temperature of washing water; determining whether or not a washing condition for the delicate fabrics is satisfied; and controlling the drying device when it is determined that the washing condition is not satisfied, so that a washing operation of the delicate fabrics is performed after the washing condition is satisfied.
  • a cooling operation for lowering the temperature in the drum by circulating the air current generated by the drying device to the inside of the drum may be performed for a predetermined time when the temperature in the drum is higher than a reference temperature in the determination of the washing condition.
  • the reference temperature may be 35° C.
  • the washing condition is satisfied when a difference of temperatures between the inside of the drum and the washing water is less than a predetermined temperature.
  • the predetermined temperature may be 2° C.
  • the washing operation of the delicate fabrics may be performed when the washing condition is satisfied during the cooling operation.
  • Preliminary washing water may be supplied and heated when the washing condition is not satisfied after the cooling operation is performed.
  • the preliminary washing water may be supplied to a heater safety ensuring water level to immerse a heater for heating the washing water.
  • Whether or not the washing condition is satisfied may be determined based on the temperature of the heated washing water and the temperature in the drum, and the washing operation of the delicate fabrics may be performed when the washing condition is satisfied.
  • FIG. 1 is a flow chart illustrating a method for washing laundry in a conventional wool course
  • FIG. 2 is a sectional view of a washing machine in accordance with the present invention.
  • FIG. 3 is a perspective view of a tub of the washing machine in accordance with the present invention.
  • FIG. 4 is a block diagram of the washing machine in accordance with the present invention.
  • FIG. 5 is a sectional view of the tub for illustrating the minimum water level and a heater safety ensuring water level
  • FIG. 6 is a flow chart illustrating a method for washing woolen fabrics in accordance with the present invention.
  • a washing machine in accordance with the present invention includes a main body 10 forming the external appearance of the washing machine, a tub 20 installed in the main body 10 for storing washing water, and a drum 30 rotatably installed in the tub 20 for containing laundry to be washed.
  • a door 11 for opening and closing an opening, which allows a user to place the laundry into the washing machine, is hinged to the front surface of the main body 10 .
  • First and second water supply pipes 12 a and 12 b for supplying washing water to the tub 20 and a detergent supply device 13 for supplying a detergent to the tub 20 are installed in the upper portion of the inside of the main body 10 .
  • the first water supply pipe 12 a supplies warm water
  • the second water supply pipe 12 b supplies cold water.
  • First and second water supply valves 16 and 17 for controlling the water supply through the first and second water supply pipes 12 a and 12 b are respectively installed in the first and second water supply pipes 12 a and 12 b.
  • the first water supply valve 16 is a switching valve
  • the second water supply valve 17 is a motor-operated three-way valve for selectively supplying the cold water to the detergent supply device 13 and a connection pipe 55 .
  • a heater 22 for heating the washing water and a first temperature sensor 23 for sensing the temperature of the washing water are installed on the bottom of the tub 20 .
  • a drain pump motor 14 and a drain pipe 15 for discharging the washing water contained in the tub 20 to the outside of the main body 10 are installed in the lower portion of the inside of the main body 10 .
  • a washing motor 40 for rotating the drum 30 in regular and reverse directions is installed on the external surface of a rear plate 21 forming the rear surface of the tub 20 , and a rotary shaft 41 for transmitting the rotary force of the washing motor to the drum 30 is installed between the drum 30 and the washing motor 40 .
  • the drum washing machine in accordance with the present invention further includes a drying device 50 for drying the laundry contained in the drum 30 by supplying warm air to the drum 30 .
  • the drying device 50 includes an air blast fan 51 , a fan motor 51 a, a drying heater 52 , a heating duct 53 , and a condensation channel 54 .
  • the air blast fan 51 is installed on the tub 20 , and supplies driving force for circulating air.
  • the heating duct 53 connects an outlet side of the air blast fan 51 to a front opening the drum 30 , and guides an air current generated from the air blast fan 51 to the inside of the drum 30 .
  • the drying heater 52 for heating air so as to effectively dry the laundry is installed in the heating duct 53 .
  • the condensation channel 54 serves to removes moisture from air discharged from the drum 30 after the drying of the laundry is completed, and one end of the condensation channel 54 is connected to the rear surface of the drum 30 and the other end of the condensation channel 54 is connected to an inlet side of the air blast fan 51 .
  • a channel forming portion 21 a which is concaved to a designated depth to the rear plate 21 , for forming the condensation channel 54 is formed on the rear plate 21 of the tub 20 .
  • a cooling water spraying unit 56 for spraying cooling water for cooling the air passing through the condensation channel 54 is installed in the condensation channel 54 .
  • the cooling water spraying unit 56 is connected to the second water supply valve 17 through the connection pipe 55 .
  • the drum washing machine of the present invention further includes a water level sensor 61 installed in the tub 20 for sensing the level of the washing water in the tub 20 , and a second temperature sensor 62 for sensing the temperature in the drum 30 .
  • the drum washing machine of the present invention further includes a controller for controlling the overall operations of the washing machine including the washing operation of delicate fabrics.
  • the controller will be described with reference to FIG. 4 .
  • An input unit 60 for inputting user's instructions to the controller 63 , the water sensor 61 for sensing the level of the washing water, a first temperature sensor 23 for sensing the temperature of the washing water, and the second temperature sensor 62 for sensing the temperature in the drum 30 are electrically connected to an input side of the controller 63 .
  • a valve driving unit 64 for controlling the operations of the first and second water supply valves 16 and 17 , a heater driving unit 65 for controlling the operations of the heater 22 and the drying heater 52 , and a motor driving unit 66 for controlling the operations of the washing motor 40 , the drain pump motor 14 , and the fan motor 51 a are electrically connected to an output side of the controller 63 .
  • the controller 63 includes a counter 63 - 1 for measuring the washing time.
  • the controller 63 determines whether or not the washing machine satisfies a washing condition for washing the fabrics without shrinkage and damage. When it is determined that the washing condition is not satisfied, the controller 63 resets a washing condition suitable to wash the fabrics. That is, the controller 63 allows the washing machine to wash the delicate fabrics only when the washing condition for washing the woolen fabrics is satisfied.
  • the controller 63 determines that the washing condition for washing woolen fabrics is set when a difference of temperatures between the inside of the drum and washing water is not high. At this time, a water supply operation for sensing the temperature of the washing water is required. As shown in FIG. 5 , water is supplied to the minimum water level to immerse the first temperature sensor 23 .
  • the controller 63 turns the drying heater 52 off and operates the air blast fan 51 . Then, the controller 63 circulates an air current generated from the air blast fan 51 in the drum 30 , thereby performing a cooling operation for lowering the temperature in the drum 30 .
  • the controller 63 senses the temperature of the washing water using the first temperature sensor 23 and the temperature in the drum 30 using the second temperature sensor 62 , and determines whether or not a difference of the sensed temperatures is in a predetermined range.
  • the washing water is heated to a high temperature so that a difference of the temperatures between the washing water and the inside of the drum is lowered.
  • Water, which is supplied to heat the washing water serves as preliminary washing water.
  • a suitable amount of the preliminary washing water is supplied prior to the supply of main washing water for washing the delicate fabrics.
  • the preliminary washing water is supplied to a heater safety ensuring water level to immerse the heater 22 .
  • woolen fabrics are placed into the drum 30 of the washing machine, and a user selects a wool course through the input unit 60 provided on the main body 10 ( 101 ).
  • the controller 63 senses the temperature in the drum 30 through the second temperature sensor 62 ( 103 ), and determines whether or not the temperature in the drum 30 is higher than a predetermined temperature Tr, for example, 35° C. ( 105 ).
  • a predetermined temperature Tr for example, 35° C. ( 105 ).
  • the controller 63 recognizes that the washing machine satisfies a condition suitable to wash the woolen fabrics. Accordingly, the controller 63 rotates the drum 30 so as to sense the weight of the laundry contained in the drum 30 ( 107 ), supplies a designated amount of washing water according to the sensed weight of the laundry ( 109 ), and drives the washing motor 40 so as to wash the woolen fabrics ( 111 ).
  • the controller 63 drives the fan motor 51 a so as to operate the air blast fan 51 under the condition that the drying heater 52 is turned off, and an air current generated from the air blast fan 51 passes through the heating duct 53 and the drum 20 and is circulated into the condensation channel 54 .
  • the controller 63 controls the second water supply valve 17 so that cold water passes through the connection pipe 55 and is sprayed into the condensation channel 54 through the cooling water spraying unit 56 .
  • the circulating air current is cooled by exchanging heat with the cold water, thereby being changed into cold air.
  • the temperature in the drum 30 is rapidly lowered by the cold air ( 108 ).
  • the counter 63 - 1 measures the cooling time ( 110 ).
  • the controller 63 supplies cold water to the minimum water level in the tub 20 through the second water supply valve 17 ( 112 ).
  • the controller 63 senses the temperature of the washing water through the first temperature sensor 23 ( 114 ), calculates a difference of temperatures between the inside of the drum 30 and the washing water ( 116 ), and determines whether or not the difference of the temperatures is less than a predetermined temperature Td ( 118 ).
  • the washing of the woolen fabrics is performed by steps 107 , 109 and 111 .
  • the controller 63 determines whether or not the measured cooling time exceeds a predetermined time ta ( 120 ). When it is determined the measured cooling time does not exceed the predetermined time ta, step 108 is performed so as to continue the cooling operation.
  • the controller 63 supplies cold water, serving as preliminary washing water, to the heater safety ensuring water level in the tub 20 through the second water supply valve 17 ( 122 ). Then, the controller 63 heats the washing water using the heater 22 ( 124 ), senses the temperature of the washing water through the first temperature sensor 23 , calculates a difference of temperatures between the inside of the drum 30 and the washing water ( 128 ), and determines whether or not the difference of the temperatures is less than the predetermined temperature Td ( 130 ). When it is determined that the difference of temperatures is not less than the predetermined temperature Td, step 124 is performed so as to heat the washing water.
  • the washing of the woolen fabrics is performed by operations 107 , 109 and 111 .
  • the present invention provides a washing machine, which performs a cooling operation for lowering the temperature in a drum so that a difference of temperatures between the inside of the drum and washing water is less than a predetermined temperature, when the temperature in the drum is excessively elevated due to a drying function performed in an earlier washing operation and the washing machine is not suitable to wash delicate fabrics, such as wool and silk, and supplies preliminary washing water and heats the preliminary washing water, when the washing condition of the washing machine after the cooling operation is performed is not satisfied, thereby causing the washing condition to be satisfied.
  • the washing machine of the present invention performs a washing operation only when the washing condition for delicate fabrics is satisfied, thereby preventing damage to the delicate fabrics due to shrinkage and deformation.
US11/475,055 2006-01-26 2006-06-27 Washing machine and method for controlling the same Abandoned US20070169283A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020060008524A KR20070078320A (ko) 2006-01-26 2006-01-26 세탁기 및 그 제어방법
KR2006-8524 2006-01-26

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US11/475,055 Abandoned US20070169283A1 (en) 2006-01-26 2006-06-27 Washing machine and method for controlling the same

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US (1) US20070169283A1 (ko)
EP (1) EP1813706A1 (ko)
JP (1) JP2007195943A (ko)
KR (1) KR20070078320A (ko)
CN (1) CN101008144A (ko)
RU (1) RU2322537C1 (ko)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100000026A1 (en) * 2007-01-15 2010-01-07 BSH Bosch und Siemens Hausgeräte GmbH Method for washing laundry in a program-controlled domestic appliance, and corresponding domestic appliance
US20110265343A1 (en) * 2010-04-30 2011-11-03 Samsung Electronics Co., Ltd. Clothes dryer and control method thereof
US20120036650A1 (en) * 2009-05-04 2012-02-16 Sang Wook Hong Laundry machine and control method thereof
US20170226679A1 (en) * 2014-10-03 2017-08-10 Electrolux Appliances Aktiebolag Laundry Washing Machine and Control Method Thereof
US20180094376A1 (en) * 2016-10-05 2018-04-05 Samsung Electronics Co., Ltd. Washing and drying machine
CN112709043A (zh) * 2020-12-23 2021-04-27 合肥美菱物联科技有限公司 一种智能调节的洗涤方法及洗衣机

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US20050192205A1 (en) * 2004-02-27 2005-09-01 Toan Trinh Multiple use fabric conditioning article with replacement indicium
DE102012023084A1 (de) * 2012-09-17 2014-03-20 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Waschen von Wäschestücken in einem programmgesteuerten Hausgerät, sowie solches Hausgerät
CN103088596B (zh) * 2013-01-23 2016-12-07 无锡小天鹅股份有限公司 洗衣机及其洗涤方法
CN104674502B (zh) * 2013-12-02 2018-06-12 博西华电器（江苏）有限公司 洗衣机及其洗涤雪纺织物的方法、洗衣机控制器
CN106480640B (zh) * 2015-08-27 2021-03-19 青岛海尔洗涤电器有限公司 一种洗衣机控制方法及洗衣机
JP7063532B2 (ja) * 2016-08-17 2022-05-09 東芝ライフスタイル株式会社 洗濯機
CN107974797B (zh) * 2016-10-24 2021-06-01 重庆海尔滚筒洗衣机有限公司 一种洗干一体机的烘干方法
KR102525026B1 (ko) * 2018-02-23 2023-04-24 엘지전자 주식회사 세탁기 및 세탁기의 제어방법
CN114687133B (zh) * 2020-12-28 2023-12-12 无锡小天鹅电器有限公司 一种洗涤控制方法、装置、衣物处理设备及存储介质

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KR950025142A (ko) * 1994-02-07 1995-09-15 배순훈 세탁기의 건조 제어방법
EP0942093B1 (en) * 1998-03-12 2004-12-29 Matsushita Electric Industrial Co., Ltd. Electric washer-dryer
KR100510680B1 (ko) * 2003-03-31 2005-08-31 엘지전자 주식회사 증기분사식 드럼세탁기
DE602005014858D1 (de) * 2004-04-20 2009-07-23 Lg Electronics Inc Waschtrockner
KR20060061974A (ko) * 2004-12-02 2006-06-09 삼성전자주식회사 의류의 구김제거장치 및 그 방법

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100000026A1 (en) * 2007-01-15 2010-01-07 BSH Bosch und Siemens Hausgeräte GmbH Method for washing laundry in a program-controlled domestic appliance, and corresponding domestic appliance
US8863559B2 (en) * 2007-01-15 2014-10-21 BSH Bosch und Siemens Hausgeräte GmbH Method for washing laundry in a program-controlled domestic appliance, and corresponding domestic appliance
US20120036650A1 (en) * 2009-05-04 2012-02-16 Sang Wook Hong Laundry machine and control method thereof
US20110265343A1 (en) * 2010-04-30 2011-11-03 Samsung Electronics Co., Ltd. Clothes dryer and control method thereof
US8544187B2 (en) * 2010-04-30 2013-10-01 Samsung Electronics Co., Ltd. Clothes dryer and control method thereof
US9200840B2 (en) 2010-04-30 2015-12-01 Samsung Electronics Co., Ltd. Clothes dryer and control method thereof
US20170226679A1 (en) * 2014-10-03 2017-08-10 Electrolux Appliances Aktiebolag Laundry Washing Machine and Control Method Thereof
US10640905B2 (en) * 2014-10-03 2020-05-05 Electrolux Appliances Aktienbolag Laundry washing machine and control method thereof
US20180094376A1 (en) * 2016-10-05 2018-04-05 Samsung Electronics Co., Ltd. Washing and drying machine
US10590583B2 (en) * 2016-10-05 2020-03-17 Samsung Electronics Co., Ltd. Washing and drying machine
CN112709043A (zh) * 2020-12-23 2021-04-27 合肥美菱物联科技有限公司 一种智能调节的洗涤方法及洗衣机

Also Published As

Publication number Publication date
EP1813706A1 (en) 2007-08-01
RU2006123537A (ru) 2008-01-10
KR20070078320A (ko) 2007-07-31
JP2007195943A (ja) 2007-08-09
RU2322537C1 (ru) 2008-04-20
CN101008144A (zh) 2007-08-01

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AS Assignment

Owner name: SAMSUNG ELECTRONICS CO., LTD., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KIM, SUNG HOON;KIM, HYUN SOOK;YANG, BYOUNG YULL;REEL/FRAME:018037/0728

Effective date: 20060523

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION