Abstract: Disclosed is a semiconductor silicon wafer having an electric power supply affixed to the backside of the wafer. By fabricating the electric power supply onto the backside of the wafer that has been left unused, the semiconductor chip can have a self-supplied power, realizing the self-powered semiconductor chip with an increased efficiency. Further, since the electric power supply is installed on the wafer, not the semiconductor chip, the fabrication procedure becomes very simple, and the battery can be mounted on any type of chip.
Type:
Grant
Filed:
October 13, 2006
Date of Patent:
March 29, 2011
Assignee:
Industry-Academic Cooperation Foundation Gyeongsang National University
Inventors:
Hyo-Jun Ahn, Ki-Won Kim, Jou-Hyeon Ahn, Tae-Hyun Nam, Kwon-Koo Cho, Hwi-Beom Shin, Hyun-Chil Choi, Gyu-Bong Cho, Tae-Bum Kim, Ho-Suk Ryu, Won-Cheol Shin, Jong-Seon Kim
Abstract: Provided is a method for producing a polyhydroxyalkanoic acid (PHA). More particularly, a method of preparing PHA containing a high content of long-chain aromatic monomer-units by growing a phaZ mutant of a Pseudomonas strain in a medium containing a sugar, a substituted fatty acid, and a salicylic acid.
Type:
Application
Filed:
April 23, 2010
Publication date:
January 27, 2011
Applicant:
INDUSTRY-ACADEMIC COOPERATION FOUNDATION GYEONGSANG NATIONAL UNIVERSITY
Abstract: Provided is an aerostatic bearing spindle system using a unidirectional porous metal. The aerostatic bearing spindle system using a unidirectional porous metal may be used to serve as bearings in a region is in contact with the unidirectional porous metals when the unidirectional porous metals are rotated at a high speed, the unidirectional porous metals being manufactured with high porosity and directionality using the metallurgical method.
Type:
Grant
Filed:
July 2, 2008
Date of Patent:
January 18, 2011
Assignee:
Industry-Academic Cooperation Foundation Gyeongsang National University
Inventors:
Bo Young Hur, Yong Su Um, Jae Hong Yoon
Abstract: Disclosed relates to a novel chalcone derivative, pharmaceutically acceptable salt thereof, a method for preparing the same and uses thereof, the chalcone derivative being readily obtained through the steps of: reacting aminoacetophenone with sulfonylchloride under the presence of an appropriate salt; and reacting the compound prepared in the above step with hydroxybenzaldehide under the presence of an appropriate catalyst. The chalcone derivative of formula 1 in accordance with the present invention having strong enzyme inhibitory activities for glycosidase can be effectively used in preventing and treating various diseases induced by glycosidase, and the chalcone derivative of the invention having tyrosinase and melanin synthesis inhibitory activities can be effectively used as a skin-whitening compound.
Type:
Grant
Filed:
April 3, 2006
Date of Patent:
December 14, 2010
Assignee:
Industry-Academic Cooperation Foundation Gyeongsang National University
Inventors:
Ki Hun Park, Jin Hyo Kim, Woo Duck Seo, Young Bae Ryu, Hyung Won Ryu, Woo Song Lee, Sang Wan Gal
Abstract: A method for manufacturing a wastepaper shock absorbing material using a vacuum forming principle is provided. The method includes disintegrating wastepaper selected from at least one of old corrugated containers, old newspapers and milk cartons, diluting the disintegrated wastepaper to form a pulp suspension, mixing the pulp suspension with a cationic starch to form a mixture, and vacuuming the mixture by applying a first vacuum in a first direction and a second vacuum in a second direction in a vacuum former to vacuum-dehydrate the mixture and provide a shock absorbing material. The first direction is substantially opposite to the second direction. The method further includes drying the shock absorbing material and performing a surface sizing process on a surface of the shock absorbing material. The wastepaper shock absorbing material has a low elastic modulus and density and can be manufactured without using the conventional press process performed by a press plate.
Type:
Grant
Filed:
December 1, 2006
Date of Patent:
September 22, 2009
Assignee:
Industry-Academic Cooperation Foundation Gyeongsang National University
Inventors:
Chul hwan Kim, Young min Lee, Dae bin Song
Abstract: Disclosed are fine powder of waste polyurethane foam and a manufacturing method thereof. According to this invention, fine powder of waste polyurethane foam can be manufactured using a crushing process including primary and secondary coarse crushing steps and a fine grinding step and a classification process, thereby solving conventional problems of the deterioration of the properties and the difficulty forming a desired cell structure, due to the use of waste polyurethane powder having a large particle diameter, and widening the range of waste polyurethane that can be recycled.
Type:
Grant
Filed:
November 16, 2006
Date of Patent:
July 14, 2009
Assignee:
Industry-Academic Cooperation Foundation Gyeongsang National University
Abstract: Provided is an aerostatic bearing spindle system using a unidirectional porous metal. The aerostatic bearing spindle system using a unidirectional porous metal may be used to serve as bearings in a region is in contact with the unidirectional porous metals when the unidirectional porous metals are rotated at a high speed, the unidirectional porous metals being manufactured with high porosity and directionality using the metallurgical method.
Type:
Application
Filed:
July 2, 2008
Publication date:
January 8, 2009
Applicant:
INDUSTRY-ACADEMIC COOPERATION FOUNDATION GYEONGSANG NATIONAL UNIVERSITY
Inventors:
Bo Young Hur, Yong Su Um, Jae Hong Yoon
Abstract: Disclosed are fine powder of waste polyurethane foam and a manufacturing method thereof. According to this invention, fine powder of waste polyurethane foam can be manufactured using a crushing process including primary and secondary coarse crushing steps and a fine grinding step and a classification process, thereby solving conventional problems of the deterioration of the properties and the difficulty forming a desired cell structure, due to the use of waste polyurethane powder having a large particle diameter, and widening the range of waste polyurethane that can be recycled.
Type:
Application
Filed:
November 16, 2006
Publication date:
May 22, 2008
Applicants:
Industry-Academic Cooperation Foundation Gyeongsang National University, JS Tech Co., Ltd.
Abstract: Disclosed herein is a method for designing an insulation thickness of a 22.9 kV high-temperature superconducting cable wherein conversion coefficients for use in the transmission of electric power. In the insulation thickness designing method, differently from a conventional design method wherein only AC insulation breakdown electric-field, impulse insulation breakdown electric-field, and partial discharge initiation electric-field characteristics of an insulation sheet sample are applied to cable insulation thickness design equations, conversion coefficients, which are obtained in consideration of the effects of shape, area, and thickness along with the respective electric-field values, to the cable insulation thickness design equations, thereby achieving an increase in the accuracy of the insulation thickness of the high-temperature superconducting cable to be manufactured.
Type:
Application
Filed:
January 24, 2006
Publication date:
June 14, 2007
Applicant:
Industry Academic Cooperation Foundation Gyeongsang National University
Inventors:
Sang Kim, Dong Kwag, Hyeon Cheon, Jae Choi