PATENT CLAIM ANALYSIS

Application Number: 16329163
Application Type: Utility
Filing Date: 2019-02
Publication Date: 2019-07
Patent Classification: ["148", "546000"]

Abstract:
This H section includes, as a chemical composition, C, Si, Mn, Nb, V, Ti, and N; in which the H section includes, as a metallographic structure, ferrite of 60 area % to less than 100 area %, an average grain size of this ferrite is 1 μm to 30 μm, a thickness of a flange is 20 mm to 140 mm, tensile yield stress is 385 MPa to 530 MPa, and Charpy absorbed energy at −20° C. is 100 J or more.

Claim (Index 1):
An H section, wherein\n a steel comprises, as a chemical composition, by mass %, C: 0.05% to 0.160%, Si: 0.01% to 0.60%, Mn: 0.80% to 1.70%, Nb: 0.005% to 0.050%, V: 0.05% to 0.120%, Ti: 0.001% to 0.025%, N: 0.0001% to 0.0120%, Cr: 0% to 0.30%, Mo: 0% to 0.20%, Ni: 0% to 0.50%, Cu: 0% to 0.35%, W: 0% to 0.50%, Ca: 0% to 0.0050%, Zr: 0% to 0.0050%, Al: limited to 0.10% or less, B: limited to 0.0003% or less, and a remainder including Fe and impurities, wherein C, Mn, Cr, Mo, V, Ni, and Cu in the chemical composition satisfy 0.30\u2264Ceq\u22640.48, when Ceq=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15, the steel includes, as a metallographic structure, by area fraction, ferrite of 60% to less than 100%, a mixed structure MA of martensite and austenite being limited to 3.0% or less, and a structure other than the ferrite and the MA being limited to 37% or less, an average grain size of the ferrite is 1 \u03bcm to 30 \u03bcm, a shape is an H-shape and a thickness of a flange is 20 mm to 140 mm, when being seen in a cut section orthogonal to a rolling direction, at a position of (1/6)F from an end surface of the flange in the width direction, tensile yield stress is 385 MPa to 530 MPa and maximum tensile strength is 490 MPa to 690 MPa, when a length of the flange in a width direction is F, and at the position of (1/6)F and at a position of (114)t 2  from an outer surface of the flange in a thickness direction, absorbed energy in a Charpy test at \u221220\u00b0 C. is 100 J or more, when the thickness of the flange is t 2 .

Metadata:
- Claim Count in Document: 1.0
- Percentile: 99.0
- Lexical Diversity: 1.58065
- Patent Class: 148.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14761186', '14416403', '15129518', '15039753', '14357604']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8245183008221243
- 35 USC 102 Novelty (BERT): 0.5118643575160223
- Combined Prediction Score: 0.793252906491514
- Mean Citation Score: 269.314822
- Max Citation Score: 281.36557
- Similarity Product: 239.3494282960564

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