Inventor · disambiguated record
Keunsuk P. Chang
Also filed as: CHANG KEUNSUK P
34 granted patents·23 pending applications·216 citations·filing 1991–2020
96Inventor score
Top patents by PatentIndex Score
57 records- 0196US7951438B2Biaxially oriented polylactic acid film with high barrierTORAY PLASTICS AMERICA INC·Filed 2008·Granted May 31, 2011·43 cites·17 claims
- 0289US6844078B2Polyolefin oil resistant film using high isotactic content polypropyleneTORAY PLASTICS AMERICA INC·Filed 2003·Granted Jan 18, 2005·31 cites·15 claims
- 0384US9745455B2Biaxially oriented matte polypropylene filmTORAY PLASTICS (AMERICA) INC·Filed 2013·Granted Aug 29, 2017·6 cites·21 claims
- 0483US10357913B2Transparent oriented polypropylene film with high moisture vapor and oxygen barrier propertiesTORAY PLASTICS AMERICA INC·Filed 2018·Granted Jul 23, 2019·1 cites·11 claims
- 0583US7163727B2Multi-layer barrier film structureTORAY PLASTICS AMERICA INC·Filed 2003·Granted Jan 16, 2007·19 cites·44 claims
- 0682US9150004B2Biaxially oriented polylactic acid film with improved heat seal propertiesDOU SHICHEN·Filed 2010·Granted Oct 6, 2015·4 cites·29 claims
- 0781US9492962B2Biaxially oriented polylactic acid film with reduced noise level and improved moisture barrierDOU SHICHEN·Filed 2011·Granted Nov 15, 2016·4 cites·21 claims
- 0876US11370205B2Oriented polypropylene film with improved blocking resistanceTORAY PLASTICS AMERICA INC·Filed 2019·Granted Jun 28, 2022·0 cites·9 claims
- 0976US10137625B2Biaxially oriented bio-based polyester films and laminatesSAKELLARIDES STEFANOS L·Filed 2011·Granted Nov 27, 2018·2 cites·14 claims
- 1076US6764752B2Biaxially oriented polypropylene metallized film for packagingTORAY PLASTICS AMERICA INC·Filed 2001·Granted Jul 20, 2004·13 cites·25 claims
- 1175US9314999B2Biaxially oriented polylactic acid film with high barrierCLOUTIER JOSHUA R·Filed 2009·Granted Apr 19, 2016·9 cites·17 claims
- 1272US9238324B2Biaxially oriented polylactic acid film with reduced noise levelDOU SHICHEN·Filed 2010·Granted Jan 19, 2016·4 cites·29 claims
- 1372US7078463B2High oxygen transmission biaxially oriented polypropylene filmTORAY PLASTICS AMERICA INC·Filed 2003·Granted Jul 18, 2006·8 cites·30 claims
- 1470US11338561B2Oriented polypropylene film with improved blocking resistanceTORAY PLASTICS AMERICA INC·Filed 2020·Granted May 24, 2022·0 cites·12 claims
- 1568US11370204B2Oriented polypropylene film with improved blocking resistanceTORAY PLASTICS AMERICA INC·Filed 2018·Granted Jun 28, 2022·0 cites·8 claims
- 1668US11198279B2Oriented polypropylene film with improved blocking resistanceTORAY PLASTICS AMERICA INC·Filed 2018·Granted Dec 14, 2021·0 cites·10 claims
- 1768US9630383B2Biaxially oriented polypropylene film with low moisture vapor transmission rateTORAY PLASTICS (AMERICA) INC·Filed 2014·Granted Apr 25, 2017·0 cites·21 claims
- 1868US8916080B2Method to produce matte and opaque biaxially oriented polylactic acid filmLEE MARK S·Filed 2012·Granted Dec 23, 2014·1 cites·8 claims
- 1968US8574695B2Biodegradable composite barrier filmLEE MARK·Filed 2010·Granted Nov 5, 2013·1 cites·17 claims
- 2068US7988894B2Method of making biaxially oriented polyolefin film for cold seal applicationsTORAY PLASTICS AMERICA INC·Filed 2008·Granted Aug 2, 2011·0 cites·15 claims
- 2168US7722794B2Method for producing a sealable biaxially oriented polypropylene film for packagingTORAY PLASTICS AMERICA INC·Filed 2005·Granted May 25, 2010·2 cites·13 claims
- 2267US9221213B2Multi-layer high moisture barrier polylactic acid filmDOU SHICHEN·Filed 2011·Granted Dec 29, 2015·1 cites·19 claims
- 2367US6916526B1Biaxially oriented polypropylene metallized film for packagingTORAY PLASTICS AMERICA INC·Filed 2000·Granted Jul 12, 2005·13 cites·42 claims
- 2464US9669607B2Biaxially oriented polypropylene film with low moisture vapor transmission rateTORAY PLASTICS (AMERICA) INC·Filed 2016·Granted Jun 6, 2017·0 cites·21 claims
- 2563US6790524B2Biaxially oriented polypropylene metallized film for packagingTORAY PLASTICS AMERICA INC·Filed 2001·Granted Sep 14, 2004·7 cites·44 claims
- 2663US2007141372A1Polypropylene multi-layer barrier filmsTORAY PLASTICS AMERICA INC·Filed 2007·Application pending·0 cites
- 2760US2014065315A1Biaxially oriented bio-based polyolefin film that has been extrusion coated with bio-based sealant for lidding applicationsTORAY PLASTICS AMERICA INC·Filed 2013·Application pending·0 cites
- 2858US2005186414A1Polypropylene multi-layer barrier filmsTORAY PLASTICS AMERICA INC·Filed 2004·Application pending·0 cites
- 2958US2005147835A1Biaxially oriented polypropylene high barrier metallized film for packagingTORAY PLASTICS AMERICA INC·Filed 2005·Application pending·0 cites
- 3057US8835015B2High oxygen transmission biaxially oriented film with improved tensile propertiesSU TIEN-KUEI·Filed 2004·Granted Sep 16, 2014·2 cites·19 claims
- 3157US2014065398A1Biaxially oriented bio-based polyolefin film that has been extrusion coated with bio-based sealant for lidding applicationsSIU ROBERTO·Filed 2012·Application pending·0 cites
- 3257US2017015821A1Transparent oriented polypropylene film with high moisture vapor and oxygen barrier propertiesTORAY PLASTICS (AMERICA) INC·Filed 2015·Application pending·0 cites
- 3356US2014017489A1Biodegradable composite barrier filmLEE MARK·Filed 2013·Application pending·0 cites
- 3455US2005244661A1Biaxially oriented polyolefin film for cold seal applicationTORAY PLASTICS AMERICA INC·Filed 2003·Application pending·0 cites
- 3554US2004166337A1Biaxially oriented polypropylene high barrier metallized film for packagingTORAY PLASTICS AMERICA INC·Filed 2003·Application pending·0 cites
- 3652US8652626B2Biaxially oriented metallized polylactic acid film with high metal adhesion and high barrier propertiesLEE MARK S·Filed 2010·Granted Feb 18, 2014·0 cites·20 claims
- 3752US2008205800A1Transparent biaxially oriented polypropylene film with low moisture vapor and oxygen transmission rateTORAY PLASTICS AMERICA INC·Filed 2008·Application pending·0 cites
- 3852US2006233988A1Multi-layer barrier film structureTORAY PLASTICS AMERICA INC·Filed 2005·Application pending·0 cites
- 3949US11027523B2Polyester film incorporating silicone for release of canned meat productsTORAY PLASTICS AMERICA INC·Filed 2017·Granted Jun 8, 2021·0 cites·8 claims
- 4049US2020070484A1Oriented polypropylene film with improved machinabilityTORAY PLASTICS AMERICA INC·Filed 2018·Application pending·0 cites
- 4147US2019299580A1Oriented polypropylene film with improved blocking resistanceTORAY PLASTICS AMERICA INC·Filed 2018·Application pending·0 cites
- 4246US5248535ARelease sheetMOBIL OIL CORP·Filed 1992·Granted Sep 28, 1993·12 cites·12 claims
- 4346US5232756ARelease film with reduced transferable silicone materialMOBIL OIL CORP·Filed 1991·Granted Aug 3, 1993·11 cites·10 claims
- 4445US6503611B1Cold seal release biaxially oriented polypropylene film for packaging with stable release propertiesTORAY PLASTICS AMERICA INC·Filed 1999·Granted Jan 7, 2003·13 cites·12 claims
- 4545US2017282507A1Biaxially oriented polyolefin film with high moisture vapor barrier and stiffness propertiesTORAY PLASTICS (AMERICA) INC·Filed 2016·Application pending·0 cites
- 4645US2013344345A1Biaxially oriented bio-based polyester window films and laminatesTORAY PLASTICS AMERICA INC·Filed 2013·Application pending·0 cites
- 4745US2010330382A1Biaxially oriented polylactic acid film with improved moisture barrierTORAY PLASTICS AMERICA INC·Filed 2010·Application pending·0 cites
- 4844US2016167347A1Method to improve making of heat sealable biaxially oriented filmsTORAY PLASTICS AMERICA INC·Filed 2014·Application pending·0 cites
- 4943US2003082390A1Durable high barrier metallized polypropylene filmFiled 2002·Application pending·0 cites
- 5043US2012251749A1Heat sealable monoaxially oriented propylene-based film with directional tearLEE MARK S·Filed 2012·Application pending·0 cites
Showing the top 50 of 57 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →