- 专利标题: PRODUCING POLYCRYSTALLINE DIAMOND COMPACT (PDC) DRILL BITS WITH CATALYST-FREE AND SUBSTRATE-FREE PDC CUTTERS
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申请号: EP23703909.4申请日: 2023-01-03
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公开(公告)号: EP4460409A1公开(公告)日: 2024-11-13
- 发明人: ZHAN, Guodong , XU, Jianhui , MOELLENDICK, Timothy E. , HE, Duanwei
- 申请人: Saudi Arabian Oil Company , Chengdu Dongwei Technology Co., Ltd.
- 申请人地址: SA Dhahran 31311 1 Eastern Avenue; CN Sichuan 610213 2039 S. Section of Tianfu Ave. Tianfu New District Chengdu
- 代理机构: Fish & Richardson P.C.
- 优先权: US202217567531 20220103
- 国际公布: WO2023130111 20230706
- 主分类号: B22D19/00
- IPC分类号: B22D19/00 ; B22D19/02 ; B22F7/06 ; B22F10/14 ; B24D18/00 ; B33Y10/00 ; B33Y80/00 ; C22C1/04 ; C22C1/10 ; C22C26/00 ; E21B10/42 ; B22F5/00
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