PATENT CLAIM ANALYSIS

Application Number: 16245731
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-05
Patent Classification: ["508", "391000"]

Abstract:
The invention is directed to a method for reducing low speed pre-ignition events in a spark-ignited direct injection internal combustion engine by supplying to the sump a lubricant composition which contains an oil of lubricating viscosity and an overbased sodium detergent. The metal overbased detergent may be selected from sulfonate detergents, phenate detergents, and salicylate detergents, including sulfonate detergents with a metal ratio of at least 5.

Claim (Index 1):
A method for reducing low speed pre-ignition events in a spark-ignited direct injection internal combustion engine wherein the engine is equipped with a turbocharger and is operated under a load with a brake mean effective pressure (BMEP) of greater than or equal to 10 bars at speeds less than or equal to 3,000 rpm, comprising supplying to the engine a lubricant composition comprising:\n (a) a base oil of lubricating viscosity, (b) an overbased metal detergent, wherein the overbased metal detergent comprises\n (i) an overbased sodium detergent in an amount to provide at least 215 parts per million (ppm) sodium to the lubricant composition, \n (ii) an overbased calcium detergent; and \n (c) less than 10 ppm of magnesium from an overbased detergent, wherein the weight ratio of sodium to calcium in the overbased metal detergent is 1:9 to 4:6.

Metadata:
- Claim Count in Document: 38.0
- Percentile: 99.0
- Lexical Diversity: 1.33333
- Patent Class: 508.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15022345', '15147330', '15147317', '15409509', '15147375']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8317207218979916
- 35 USC 102 Novelty (BERT): 0.568246028279046
- Combined Prediction Score: 0.805373252536097
- Mean Citation Score: 312.60152
- Max Citation Score: 327.63617
- Similarity Product: 243.48846213692963

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