PATENT CLAIM ANALYSIS

Application Number: 16325267
Application Type: Utility
Filing Date: 2019-02
Publication Date: 2019-08
Patent Classification: ["148", "433000"]

Abstract:
This free-cutting copper alloy contains 75.0%-78.5% Cu, 2.95%-3.55% Si, 0.07%-0.28% Sn, 0.06%-0.14% P, and 0.022%-0.25% Pb, with the remainder being made up of Zn and inevitable impurities. The composition satisfies the following relations: 76.2≤f1=Cu+0.8×Si−8.5×Sn+P+0.5×Pb≤80.3, 61.5≤f2=Cu−4.3×Si−0.7×Sn−P+0.5×Pb≤63.3. The area ratios (%) of the constituent phases satisfy the following relations: 25≤κ≤65, 0≤γ≤1.5, 0≤β≤0.2, 0≤μ≤2.0, 97.0≤f3=α+κ, 99.4≤f4=α+κ+γ+μ, 0≤f5=γ+μ≤2.5, 27≤f6=κ+6×γ 1/2 +0.5×μ≤70. The long side of the γ phase does not exceed 40 μm, the long side of the μ phase does not exceed 25 μm, and the κ phase is present within the α phase.

Claim (Index 3):
A free-cutting copper alloy worked material that is obtained by performing any one or both of cold working and hot working the free-cutting copper alloy worked material comprising:\n 75.5 mass % to 78.0 mass % of Cu; 3.1 mass % to 3.4 mass % of Si; 0.10 mass % to 0.27 mass % of Sn; 0.06 mass % to 0.13 mass % of P; 0.024 mass % to 0.24 mass % of Pb; and a balance including Zn and inevitable impurities, wherein a total amount of Fe, Mn, Co, and Cr as the inevitable impurities is lower than 0.08 mass %, when a Cu content is represented by [Cu] mass %, a Si content is represented by [Si] mass %, a Sn content is represented by [Sn] mass %, a P content is represented by [P] mass %, and a Pb content is represented by [Pb] mass %, the relations of\n 76.6\u2264 f 1=[Cu]+0.8\u00d7[Si]\u22128.5\u00d7[Sn]+[P]+0.5\u00d7[Pb]\u226479.6 and \n 61.7\u2264 f 2=[Cu]\u22124.3\u00d7[Si]\u22120.7\u00d7[Sn]\u2212[P]+0.5\u00d7[Pb]\u226463.2 \n are satisfied, in constituent phases of metallographic structure, when an area ratio of \u03b1 phase is represented by (\u03b1) %, an area ratio of \u03b2 phase is represented by (\u03b2) %, an area ratio of \u03b3 phase is represented by (\u03b3) %, an area ratio of \u03ba phase is represented by (\u03ba) %, and an area ratio of \u03bc phase is represented by (\u03bc) %, the relations of\n 30\u2264(\u03ba)\u226456, \n 0\u2264(\u03b3)\u22640.8, \n (\u03b2)=0, \n 0\u2264(\u03bc)\u22641.0, \n 98.0\u2264 f 3=(\u03b1)+(\u03ba), \n 99.6\u2264 f 4=(\u03b1)+(\u03ba)+(\u03b3)+(\u03bc), \n 0\u2264 f 5=(\u03b3)+(\u03bc)\u22641.5, and \n 32\u2264 f 6=(\u03ba)+6\u00d7(\u03b3) 1/2 +0.5\u00d7(\u03bc)\u226462 \n are satisfied, the length of the long side of \u03b3 phase is 30 \u03bcm or less, the length of the long side of t phase is 15 \u03bcm or less, and \u03ba phase is present in \u03b1 phase.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 99.0
- Lexical Diversity: 1.72
- Patent Class: 148.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16274622', '16323112', '13867872', '13867782', '10597454']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8470033006788623
- 35 USC 102 Novelty (BERT): 0.6510849159692238
- Combined Prediction Score: 0.8274114622078984
- Mean Citation Score: 505.911038
- Max Citation Score: 678.4845
- Similarity Product: 564.5585636635423

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