-
-
-
-
Seamless master and method of making same
-
Patent number 8,097,311
-
Issue date Jan 17, 2012
-
Asahi Kasei Kabushiki Kaisha
-
San Zhuang Wang
-
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
-
Seamless master and method of making same
-
Patent number 7,700,199
-
Issue date Apr 20, 2010
-
Asahi Kasei Kabushiki Kaisha
-
San Zhuang Wang
-
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
-
Seamless master and method of making same
-
Patent number 6,675,863
-
Issue date Jan 13, 2004
-
Physical Optics Corporation
-
San Zhuang Wang
-
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL