PATENT CLAIM ANALYSIS

Application Number: 15755982
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-02
Patent Classification: ["428", "213000"]

Abstract:
Provided is a surface-coated cutting tool including: a tool body ( 3 ) and a hard coating layer on the tool body ( 3 ). The hard coating layer has an alternate laminate structure of A ( 1 ) and B layers ( 2 ). The A layer ( 1 ) is a Ti and Al complex nitride layer satisfying a compositional formula: (Ti 1-z Al z )N, 0.4≤z≤0.7. The B layer ( 2 ) is a Cr, Al and M complex nitride layer satisfying a compositional formula: (Cr 1-x-y Al x M y )N, 0.03≤x≤0.4 and 0≤y≤0.05. The value of a ratio tB/tA of the average layer thickness of the B layer ( 2 ) to the average layer thickness of the A layer ( 1 ) satisfies 0.67 to 2.0. The lattice constant a(Å) of crystal grains of the hard coating layer satisfies 4.10≤a≤4.20. The ratio of I(200) to I(111) satisfies 2.0≤I(200)/I(111)≤10.

Claim (Index 1):
A surface-coated cutting tool comprising:\n a tool body made of a tungsten carbide-based cemented carbide, a titanium carbonitride-based cermet or a cubic boron nitride sintered material; and a hard coating layer provided on a surface of the tool body, the hard coating layer being made of an alternate laminate structure, in which at least each of an A layer and a B layer is laminated alternately, and having a total thickness of 0.5-3.0 \u03bcm, wherein (a) the A layer is a complex nitride layer of Ti and Al satisfying a compositional formula: (Ti 1-z Al z )N, 0.4\u2264z\u22640.7, z being a content ratio of Al in an atomic ratio, (b) the B layer is a complex nitride layer of Cr, Al, and M satisfying a compositional formula: (Cr 1-x-y Al x M y )N, 0.03\u2264x\u22640.4 and 0\u2264y\u22640.05, x being a content ratio of Al in an atomic ratio, y being a total content ratio of an component M in an atomic ratio, and component M being one or more elements selected from: B, Si, and 4a, 5a, and 6a family elements of the periodic table except for Cr, (c) when an average layer thickness of one layer of the A layer is tA and an average layer thickness of one layer of the B layer is tB, a value of a ratio tB/tA of the average layer thickness of the one layer of the B layer with respect to the average layer thickness of the one layer of the A layer satisfies 0.67 to 2.0, (d) a lattice constant a(\u212b) of crystal grains that constitute the hard coating layer made of the A layer and the B layer calculated from a diffraction peak angle of a (200) plane obtained by X-ray diffraction of the entire hard coating layer made of the A layer and the B layer satisfies 4.10\u2264a\u22644.20, and (e) when an X-ray diffraction peak intensity of the (200) plane is I(200) and an X-ray diffraction peak intensity of a (111) plane is I(111), each of I(200) and I(111) being obtained by the X-ray diffraction of the entire hard coating layer made of the A layer and the B layer, 2.0\u2264I(200)/I(111)\u226410 is satisfied.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 88.0
- Lexical Diversity: 2.64789
- Patent Class: 428.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15529008', '14424237', '15314050', '15771254', '15509725']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.901207313829524
- 35 USC 102 Novelty (BERT): 0.4883372564866726
- Combined Prediction Score: 0.8599203080952388
- Mean Citation Score: 246.563652
- Max Citation Score: 264.83237
- Similarity Product: 230.0487584991044

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