PATENT CLAIM ANALYSIS

Application Number: 16016755
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-10
Patent Classification: ["122", "235140"]

Abstract:
A method for producing a heat transfer tube for a steam generator comprises a step of providing a tube and then applying cold drawing to the tube by using a high-pressure lubricating oil of 40 MPa or more in pressure. After the step of applying cold drawing to the tube, a step of applying a solid solution heat treatment to the tube is conducted. After the step of applying a solid solution heat treatment to the tube, a step of straightening the tube by using a roll straightening machine is conducted. An offset amount of 5 mm or less is formed for at least successive three pairs of upper and lower straightening rolls of the roll straightening machine.

Claim (Index 7):
A method for producing a heat transfer tube for a steam generator, the method comprising:\n a step of providing a tube; a step of applying cold drawing to the tube by using a high-pressure lubricating oil of 40 MPa or more in pressure; after the step of applying cold drawing to the tube, a step of applying a solid solution heat treatment to the tube; and after the step of applying a solid solution heat treatment to the tube, a step of straightening the tube by using a roll straightening machine, wherein the roll straightening machine includes at least five pairs of concave globoidal drum type rolls, each pair of rolls being arranged opposite to each other in a vertical direction and in a crossing manner where directions of rotating shafts cross each other, a stand interval being set at 300 mm or less; in the step of applying straightening the tube, offsetting that is formed by three points literally along a tube axial centerline as being crossing positions of at least successive three pairs of upper and lower straightening rolls of the roll straightening machine allows \u03b7 expressed by Formula (1) described below to satisfy 0.9\u00d710 \u22123  or more and to ensure an offset amount of 5 mm or less:\n \u03b7=1/ R \u00d7( d/ 2)\u2003\u2003(1) \n where given that an outside diameter of the tube is d (mm) and a stand interval of the roll straightening machine is L (mm) and an offset amount is 8 (mm), R=(\u03b4 2 +L 2 )/2\u03b4 is established.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 94.0
- Lexical Diversity: 2.13793
- Patent Class: 122.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12247912', '12761009', '13589342', '13528155', '13123087']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7148273166693897
- 35 USC 102 Novelty (BERT): 0.4962905340801798
- Combined Prediction Score: 0.6929736384104688
- Mean Citation Score: 160.307586
- Max Citation Score: 218.3767
- Similarity Product: 142.71313487234713

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test