PATENT CLAIM ANALYSIS

Application Number: 15764956
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["251", "368000"]

Abstract:
To provide a press-fitting, sintered valve seat having excellent valve coolability enabling use in high-efficiency engines, as well as excellent deformation resistance and wear resistance, first and second hard particles differing in hardness are dispersed in a total amount of 25-70% by mass in a network-shaped Cu matrix, the second hard particles having hardness of 300-650 HV0.1, lower than that of the first hard particles, and 0.08-2.2% by mass of P is contained in the sintered valve seat.

Claim (Index 11):
The sintered valve seat according to  claim 1 , wherein said second hard particles are made of at least one selected from the group consisting of alloy tool steel comprising by mass 1.4-1.6% of C, 0.4% or less of Si, 0.6% or less of Mn, 11.0-13.0% of Cr, 0.8-1.2% of Mo, and 0.2-0.5% of V, the balance being Fe and inevitable impurities; alloy tool steel comprising by mass 0.35-0.42% of C, 0.8-1.2% of Si, 0.25-0.5% of Mn, 4.8-5.5% of Cr, 1-1.5% of Mo, and 0.8-1.15% of V, the balance being Fe and inevitable impurities; high-speed tool steel comprising by mass 0.8-0.88% of C, 0.45% or less of Si, 0.4% or less of Mn, 3.8-4.5% of Cr, 4.7-5.2% of Mo, 5.9-6.7% of W, and 1.7-2.1% of V, the balance being Fe and inevitable impurities; and low-alloy steel comprising by mass 0.01% or less of C, 0.3-5.0% of Cr, and 0.1-2.0% of Mo, the balance being Fe and inevitable impurities.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 90.0
- Lexical Diversity: 1.70588
- Patent Class: 251.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15321645', '15778039', '14412910', '15126683', '15822857']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7975572195985695
- 35 USC 102 Novelty (BERT): 0.5424522071350883
- Combined Prediction Score: 0.7720467183522214
- Mean Citation Score: 410.705554
- Max Citation Score: 464.4512
- Similarity Product: 369.0392248193741

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

Dataset: test