Inventor
CHANG KEUNSUK P
US34 patents
⚠️ This page may combine multiple inventors who share the name “CHANG KEUNSUK P”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TORAY PLASTICS AMERICA INC
18 patentsUS7951438B2May 31, 2011
Biaxially oriented polylactic acid film with high barrier
TORAY PLASTICS AMERICA INC43 citations94
US7163727B2Jan 16, 2007
Multi-layer barrier film structure
TORAY PLASTICS AMERICA INC19 citations92
US6844078B2Jan 18, 2005
Polyolefin oil resistant film using high isotactic content polypropylene
TORAY PLASTICS AMERICA INC31 citations92
US6503611B1Jan 7, 2003
Cold seal release biaxially oriented polypropylene film for packaging with stable release properties
TORAY PLASTICS AMERICA INC13 citations84
US6764752B2Jul 20, 2004
Biaxially oriented polypropylene metallized film for packaging
TORAY PLASTICS AMERICA INC13 citations79
US6916526B1Jul 12, 2005
Biaxially oriented polypropylene metallized film for packaging
TORAY PLASTICS AMERICA INC13 citations78
US7078463B2Jul 18, 2006
High oxygen transmission biaxially oriented polypropylene film
TORAY PLASTICS AMERICA INC8 citations74
US6902822B1Jun 7, 2005
Biaxially oriented polypropylene slip film for packaging with stable coefficient of friction properties
TORAY PLASTICS AMERICA INC9 citations73
US6790524B2Sep 14, 2004
Biaxially oriented polypropylene metallized film for packaging
TORAY PLASTICS AMERICA INC7 citations66
US11370204B2Jun 28, 2022
Oriented polypropylene film with improved blocking resistance
TORAY PLASTICS AMERICA INC0 citations61
US11370205B2Jun 28, 2022
Oriented polypropylene film with improved blocking resistance
TORAY PLASTICS AMERICA INC0 citations61
US11338561B2May 24, 2022
Oriented polypropylene film with improved blocking resistance
TORAY PLASTICS AMERICA INC0 citations61
US11198279B2Dec 14, 2021
Oriented polypropylene film with improved blocking resistance
TORAY PLASTICS AMERICA INC0 citations61
US10357913B2Jul 23, 2019
Transparent oriented polypropylene film with high moisture vapor and oxygen barrier properties
TORAY PLASTICS AMERICA INC1 citations61
US7722794B2May 25, 2010
Method for producing a sealable biaxially oriented polypropylene film for packaging
TORAY PLASTICS AMERICA INC2 citations54
US7988894B2Aug 2, 2011
Method of making biaxially oriented polyolefin film for cold seal applications
TORAY PLASTICS AMERICA INC0 citations52
US11027523B2Jun 8, 2021
Polyester film incorporating silicone for release of canned meat products
TORAY PLASTICS AMERICA INC0 citations43
US10543667B2Jan 28, 2020
Easy opening metalized hermetic films and methods to manufacture the same
TORAY PLASTICS AMERICA INC0 citations33
DOU SHICHEN
4 patentsUS9150004B2Oct 6, 2015
Biaxially oriented polylactic acid film with improved heat seal properties
DOU SHICHEN4 citations71
US9492962B2Nov 15, 2016
Biaxially oriented polylactic acid film with reduced noise level and improved moisture barrier
DOU SHICHEN4 citations70
US9238324B2Jan 19, 2016
Biaxially oriented polylactic acid film with reduced noise level
DOU SHICHEN4 citations70
US9221213B2Dec 29, 2015
Multi-layer high moisture barrier polylactic acid film
DOU SHICHEN1 citations46
TORAY PLASTICS (AMERICA) INC
3 patentsUS9745455B2Aug 29, 2017
Biaxially oriented matte polypropylene film
TORAY PLASTICS (AMERICA) INC6 citations66
US9669607B2Jun 6, 2017
Biaxially oriented polypropylene film with low moisture vapor transmission rate
TORAY PLASTICS (AMERICA) INC0 citations51
US9630383B2Apr 25, 2017
Biaxially oriented polypropylene film with low moisture vapor transmission rate
TORAY PLASTICS (AMERICA) INC0 citations51
LEE MARK S
3 patentsUS8916080B2Dec 23, 2014
Method to produce matte and opaque biaxially oriented polylactic acid film
LEE MARK S1 citations49
US8652626B2Feb 18, 2014
Biaxially oriented metallized polylactic acid film with high metal adhesion and high barrier properties
LEE MARK S0 citations49
US8911870B2Dec 16, 2014
Method to produce matte and opaque biaxially oriented polylactic acid film
LEE MARK S0 citations48