Assignee
TIANDING SEALING TECH BEIJING CO LTD
CN·1 granted patent·1 pending application·0 citations·filing 2017–2017
Technology mixE21B2
Top patents by PatentIndex Score
2 records- 0123US10837257B2Rubber cylinder with rigid seal rings on both ends, packer, and bridge plugTIANDING SEALING TECH BEIJING CO LTD·Filed 2017·Granted Nov 17, 2020·0 cites·9 claims
- 0222US2019264531A1Rubber cylinder having higher hardness in upper end portion, packer, and bridge plugTIANDING SEALING TECH BEIJING CO LTD·Filed 2017·Application pending·0 cites
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