PATENT CLAIM ANALYSIS

Application Number: 16311791
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-07
Patent Classification: ["428", "469000"]

Abstract:
A ferritic stainless steel sheet is a ferritic stainless steel sheet which is temper rolled after bright annealing and has a passivation film. The area ratio of minute defects having an area of 10 μm 2  or more on the surface of the steel sheet is 0.2% or more and 1.5% or less. In addition, the thickness of the passivation film is 1 nm or more and 10 nm or less, the average concentration of Si in the passivation film is 10 at % or more and 20 at % or less, and the average concentration ratio of Si, Al, Cr and Fe in the passivation film component is (Si+Al+Cr)/Fe>1.0.

Claim (Index 6):
A method for producing a ferritic stainless steel sheet, in which a hot rolled pickled material is used as a starting material and at least finishing cold rolling, bright annealing and temper rolling are carried out in said order, wherein\n the surface of the steel sheet is mechanical polished at least once in a step preceding the finishing cold rolling, followed by annealing.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 98.0
- Lexical Diversity: 2.08333
- Patent Class: 428.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14437015', '15302386', '14008830', '15811383', '14873551']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9139600743954216
- 35 USC 102 Novelty (BERT): 0.4998491922416228
- Combined Prediction Score: 0.8725489861800418
- Mean Citation Score: 266.166564
- Max Citation Score: 283.31506
- Similarity Product: 237.47470944642063

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