Inventor · name-matched record
LI DONGFENG
3 granted patents·0 citations·filing 2021–2022
37Inventor score
Files withCHINA PETROLEUM & CHEM CORP1JIANHU KAITAI PETROLEUM MACHINERY CO LTD1Zhangjiakou cigarette factory co ltd1
This identity is grouped by exact name match (no disambiguated inventor record was available for these filings) — it may combine same-named inventors.
Top patents by PatentIndex Score
3 records- 0147US12570908B2Method for selective hydrogenation of butadiene extraction tail gas and selective hydrogenation apparatus thereofCHINA PETROLEUM & CHEM CORP·Filed 2021·Granted Mar 10, 2026·0 cites·20 claims
- 0246US12524741B2Cigarette device management system and methodZhangjiakou cigarette factory co ltd·Filed 2022·Granted Jan 13, 2026·0 cites·1 claims
- 0336US12584000B2Reduced graphene oxide nitrile rubber and method for preparing tooth-scar-free tooth blockJIANHU KAITAI PETROLEUM MACHINERY CO LTD·Filed 2021·Granted Mar 24, 2026·0 cites·7 claims
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Identity basis: exact name match across USPTO filings. How scoring works →