Miwon Co., Ltd.

Lg Electronics Inc.

Hyundai Electronics Industries Co. Ltd.

Min S Han

Bun Sam Lim

Dae K Joo

Jong Soo Kim

Wan Soo Kim

Min Hyung Kim

In Suk Choi

Jin Seok Oh

Sun Joo Kim

Sung Sook Choi

Kyung Soon Choi

Tae Gook Lee

Jeong Ha Kim

E Nam Hwang

Hong K Choi

Yeong Seok Jo

Jeong Yeol Park

Pan Ju Kim

Byoung Ju Kang

Young Pyo Bae

Chang Won Kang

Sang Kap Park

Seung T Lee

Hee Chul Kwak

Gae C Lee

Man J In

Il Hyun

Seong Nam An

Yoon Woo Choi

Sung Guen Kang

Kwang H Kim

Disclosed is a customer relationship management system and operation method thereof that enables a technician to seize the customer's satisfaction and sensitivity with respect to respective service providers, perform reception of the corresponding customer based on the seized information, register the seized information in a database, and perform a service using a proper reception for the corresponding customer after confirming the sensitivity of the customer. According to the customer relationship management system and operation method, the customer can directly select the technician, and thus remove the uneasy feeling caused by a strange visitor. Also, by confirming again the customer's satisfaction with the service after completion of the service providing, the reliability of the service with respect to the customer is improved.

Customer relationship management system and operation method thereof

A method for forming a multi-level metal interconnection, comprising the step of forming a first metal interconnection over an underlying layer; forming an insulating layer having a selected thickness over the underlying layer including the first metal interconnection; etching the insulating layer to form a contact hole, thereby exposing the first metal interconnection; forming a metal plug in the contact hole to contact with the first metal interconnection; etching the insulating layer by a portion of the selected thickness; forming a pair of metal spacers in sidewalls of the metal plug over the insulating layer; and forming a second metal interconnection over the insulating layer to contact with the first metal interconnection through one of the metal spacers.

Method for forming multi-level metal interconnection

This invention relates to an improvement in a method for manufacturing dipeptides by coupling N-blocked aspartic acid and a phenylalanine lower alkyl ester in a medium containing a water-miscible organic solvent mixture in the presence of an immobilized metallo-protease so that a continuous reaction is established with stable enzyme activity.

Process for preparing dipeptides

A process for the preparation of .alpha.-L-aspartyl-L-phenylalanine methyl ester in high yield, which comprises the steps of esterifying L-phenylalanine with methanol while undergoing continuous evaporation to remove the water formed during esterification, coupling the produced L-phenylalanine methyl ester with N-formyl-L-aspartic anhydride, deformylating the produced N-formyl-L-aspartyl-L-phenylalanine methyl ester, crystallizing the formed .alpha.-L-aspartyl-L-phenylalanine methyl ester as .alpha.-L-aspartyl-L-phenylalanine methyl ester hydrochloric acid salt, recovering the first .alpha.-L-aspartyl-L-phenylalanine methyl ester hydrochloric acid salt, esterifying .alpha.-L-aspartyl-L-phenylalanine in the filtrate to produce the second .alpha.-L-aspartyl-L-phenylalanine methyl ester, and combining the first and second .alpha.-L-aspartyl-L-phenylalanine methyl ester product.

Process for producing .alpha.-L-aspartyl-L-phenylalanine methyl ester

An immobilized fructosyltransferase enzyme is prepared by providing a porous or macroporous anion exchange resin having at least 1.0 m.sup.2 /g of internal surface, at least 0.1 ml/g of total porous volume, a spherical radius of 20-2,000 angstroms, and a nominal ion-exchange capacity of at least 1.0 meq./g of wet resin, adding to the ion-exchange resin a solution of fructosyltransferase enzyme derived from a microorganism of the genus Aureobasidium, Aspergillus, Fusarium, or Gloeosporium at a pH value of about 3-8, filtering and wind-drying the absorbed resin, and storing it in a cool place. A bifunctional cross-linking agent may be present in the solution of fructosyltransferase enzyme.

Immobilization of fructosyltransferase on a basic, porous anion-exchange

A process for purification and recovery of phenylalanine from a microbial fermentation broth containing phenylalanine which comprises providing a zinc salt of phenylalanine at a pH of 7-9, adding acid at a pH of 4-7, and separating precipitated phenylalanine.

Process for purification and recovery of L-phenylalanine

Growing community of inventors

Seoul, South Korea

Min S Han