PATENT CLAIM ANALYSIS

Application Number: 15886449
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-08
Patent Classification: ["060", "301000"]

Abstract:
A diesel engine has an exhaust aftertreatment system which has a vanadium SCR catalyst for reducing some NOx in engine-out diesel exhaust and a trap for trapping any sublimated vanadium which may be present in exhaust which has been treated by a diesel oxidation catalyst, a diesel particulate filter, and a main SCR catalyst which are between the vanadium SCR catalyst and the trap.

Claim (Index 15):
A method for aftertreatment of diesel engine exhaust flowing through aftertreatment flow path having an entrance through which untreated engine-out diesel exhaust enters and an exit through which treated diesel exhaust exits to surrounding atmosphere, the method comprising:\n 1) catalytically reducing some NOx in engine-out diesel exhaust flow across vanadium-based catalytic material on surfaces of a vanadium-based SCR catalyst by injecting diesel exhaust fluid (DEF) to entrain with engine-out diesel exhaust flow, 2) using a diesel oxidation catalyst (DOC) to treat exhaust flow from the vanadium-based SCR catalyst, 3) using a diesel particulate filter (DPF) to treat exhaust flow from the DOC, 4) catalytically reducing some NOx in exhaust flow from the DPF across catalytic surfaces of a main SCR catalyst by injecting DEF to entrain with exhaust flow from the DPF and 5) using a vanadium trap through which exhaust from the main SCR catalyst flows to condense sublimated vanadium-based catalytic material which may be present in the exhaust flow through the trap and to trap the condensate to prevent escape of vanadium-based catalytic material into surrounding atmosphere.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 88.0
- Lexical Diversity: 1.71795
- Patent Class: 60.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15630279', '15080841', '14270907', '13848109', '14586156']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7715907340320596
- 35 USC 102 Novelty (BERT): 0.5230593290878519
- Combined Prediction Score: 0.7467375935376388
- Mean Citation Score: 359.047318
- Max Citation Score: 380.06906
- Similarity Product: 322.0843439724672

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test