Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from PCT/US1998/015874external-prioritypatent/WO1999008978A1/en
Priority claimed from US09/138,355external-prioritypatent/US6342284B1/en
Priority claimed from US09/249,814external-prioritypatent/US6632550B1/en
Priority claimed from PCT/US1999/001879external-prioritypatent/WO2000006518A1/en
Application filed by 美國石膏公司filedCritical美國石膏公司
Publication of HK1040233A1publicationCriticalpatent/HK1040233A1/xx
Publication of HK1040233BpublicationCriticalpatent/HK1040233B/zh