Assignee
JOHNSON MATTHEY SHANGHAI CHEMICALS LTD
CN·4 granted patents·2 pending applications·20 citations·filing 2018–2023
Top patents by PatentIndex Score
6 records- 0192US11364485B2Multi-region catalysts for CNG engine exhaust gas treatments with improved ammonia leakage controlJOHNSON MATTHEY SHANGHAI CHEMICALS LTD·Filed 2021·Granted Jun 21, 2022·3 cites·20 claims
- 0291US11577234B2Three-zone two-layer TWC catalyst in gasoline waste gas applicationsJOHNSON MATTHEY SHANGHAI CHEMICALS LTD·Filed 2021·Granted Feb 14, 2023·7 cites·20 claims
- 0389US11439987B2Multi-region TWC for treatment of exhaust gas from gasoline engineJOHNSON MATTHEY SHANGHAI CHEMICALS LTD·Filed 2018·Granted Sep 13, 2022·6 cites·20 claims
- 0484US11110447B2Three-zone two-layer TWC catalyst in gasoline waste gas applicationsJOHNSON MATTHEY SHANGHAI CHEMICALS LTD·Filed 2018·Granted Sep 7, 2021·4 cites·15 claims
- 0561US2024001343A1Platinum enriched multi-region catalysts for cng engine exhaust gas treatmentsJOHNSON MATTHEY SHANGHAI CHEMICALS LTD·Filed 2023·Application pending·0 cites
- 0651US2024109035A1Catalysts for gasoline engine exhaust gas treatmentsJOHNSON MATTHEY SHANGHAI CHEMICALS LTD·Filed 2023·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when JOHNSON MATTHEY SHANGHAI CHEMICALS LTD files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →