Patents Assigned to Sam Yang Co., Ltd.
  • Patent number: 5948020
    Abstract: An implantable bioresorbable membrane for the separation and regeneration of tissue in a defect site and augmentation of tissues surrounding other implants comprises: (a) porous bioresorbable polymer matrix made of a bioresorbable polymer selected from the group consisting of polylactic acid, poly(lactic-co-glycolic acid), polycarprolactone, polyparadioxanone, polytrimethylene carbonate and a mixture thereof; and (b) a reinforcing fabric made of bioresorbable fibers embedded in said matrix, and is produced by preparing a fabric as a support from bioresorbable fibrous materials, coating the fabric with a solution containing a bioresorbable polymer and a pore forming agent, and treating the coated fabric to generate pores.
    Type: Grant
    Filed: December 26, 1997
    Date of Patent: September 7, 1999
    Assignee: Sam Yang Co., Ltd.
    Inventors: Seok-Joon Yoon, Guw-Dong Yeo, You-Chan Kim, Min-Hyo Seo, Chaul-Min Pai, Jong-Pyoung Jung, Seung-Jin Lee
  • Patent number: 5741511
    Abstract: The present invention is to provide a method and a transdermal drug delivery device for treating erectile dysfunction which comprises a patch containing pharmaceutically active ingredient and being directly apply to the male glans penis and its support and the rings for constricting the base part of the penis to aid the erection. The patch according to the present invention may be divided into two types, i.e. a cylinder type patch and a multi-reservoir type patch. The transdermal drug delivery patch device of the present invention is painless and safely to use and may be effectively produced and maintained erection of the penis without the adverse side effects and with a high degree of patient acceptability in the case of male impotence.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: April 21, 1998
    Assignee: Sam Yang Co., Ltd.
    Inventors: Hun Han Lee, Joong Woong Cho, Choul Young Kim, Chaul Min Pai, Jin Deog Song, Chul Min Park, Hye Jeong Yoon, Yoon Yeo, Jae Seung Paick
  • Patent number: 5561183
    Abstract: Antibacterial and deodorant polyester for fiber which is much improved in melt viscosity, is prepared by adding the melt viscosity enhancers represented by the following general formulas I to IV and compounding with zirconium phosphate: ##STR1##
    Type: Grant
    Filed: March 6, 1996
    Date of Patent: October 1, 1996
    Assignee: Sam Yang Co., Ltd.
    Inventors: Lee S. Kwon, In K. Choi
  • Patent number: 5548035
    Abstract: This invention concerns the thermoplastic, biodegradable and nontoxic block copolymer which is easily degraded and excreted in human body by the hydrolysis of intramolecular ester and amide bond. The structure of present copolymer comprises i) hydrophilic and swellable soft domain consisting of polyethyleneoxide(PEO), and ii) hydrophobic, biodegradable, crystallizable and non-swellable hard domain consisting of polylactide(PLA), polyglycolide(PGA), polylactideglycolide(PLdA) and polycaprolactone(PCL).
    Type: Grant
    Filed: May 4, 1994
    Date of Patent: August 20, 1996
    Assignee: Sam Yang Co., Ltd.
    Inventors: Ho H. Kim, Guw D. Yeo, Yil W. Yi
  • Patent number: 5514380
    Abstract: This invention concerns the thermoplastic, biodegradable hydrogel copolymer which is easily degraded and excreted in human body by the hydrolysis of intramolecular ester and amide bond. The structure of present copolymer comprises i) hydrophilic and swellable soft domain consisting of polyethyleneoxide (PEO), and ii) hydrophobic, biodegradable, crystallizable and non-swellable hard domain consisting of polylactide (PLA), polyglycolide (PGA), polylactideglycolide (PLGA) and polycaprolactone (PCL).
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: May 7, 1996
    Assignee: Sam Yang Co., Ltd.
    Inventors: Soo S. Song, Ho H. Kim, Yil W. Yi
  • Patent number: 5476909
    Abstract: The present invention relates to a triblock(ABA) copolymer used for medical application essentially consisting of: PLA, PGA, or PLA/PGA as hydrophobic block(A), biodegradable PEO derivatives synthesized by PEOs less than 4,000 molecular weight by the ester linkage among them as hydrophilic block (B). The present invention also provides a triblock copolymer easily degradable to the compounds less than M.W. 4,000 in order to excrete through the human kidney, which enables its medical application. Furthermore, using the triblock copolymer of the present invention, the improved hydrogel materials with broad biochemical applications can be provided due to its biodegradable and thermoplastic properties.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: December 19, 1995
    Assignee: Sam Yang Co., Ltd.
    Inventors: Gun P. Kim, Jin D. Song
  • Patent number: 5275663
    Abstract: An apparatus for coating a hydrophilic film which includes a light reaction chamber having UV lamps on either side of the film, two cooling fans and a solvent deflation fan. There are also an air drying plates and coating nozzles.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: January 4, 1994
    Assignee: Sam Yang Co., Ltd.
    Inventors: Young H. Kim, Jae W. Kim, Jeong W. An, Woog Y. Lee
  • Patent number: 4960812
    Abstract: Polyester resin compounds useful as plastic materials which demonstrate good surface characteristics, excellent physical properties and outstanding formability, particularly when processed at a temperature lower than 100.degree. C. are disclosed. Superior characteristics are achieved by accelerating the speed of crystallization thereof by incorporating additives so that crystallization is completed throughout the product.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: October 2, 1990
    Assignee: Sam Yang Co., Ltd.
    Inventors: Han S. Youn, Kim Dong, II, Choi I. Gyu