PATENT CLAIM ANALYSIS

Application Number: 15745738
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["562", "486000"]

Abstract:
A method for producing high-purity terephthalic acid, comprising following steps (a) to (c): the step (a); obtaining crude terephthalic acid crystal by liquid phase-oxidizing a p-phenylene compound; the step (b); obtaining a terephthalic acid crystal slurry by a catalytic hydrogenation treatment of the crude terephthalic acid crystal; and the step (c); introducing the terephthalic acid crystal slurry into an upper portion of a mother liquor replacement tower, and bringing the slurry into contact with an upward flow of replacement water introduced from a bottom portion of the mother liquor replacement tower while making the terephthalic acid crystal settled down in the tower, and extracting the terephthalic acid crystal as a slurry with the replacement water from the tower bottom portion, wherein (1) a stirring blade unit is disposed in a slurry layer in the bottom portion of the mother liquor replacement tower, and fluidity of the slurry layer is maintained by rotating the stirring blade unit in such a way that stirring power is 0.1 to 1.0 kWh/m 3  per unit volume of the slurry layer, and (2) the replacement water is fed through the replacement water feed opening provided in the stirring blade unit.

Claim (Index 7):
The method according to  claim 1 , wherein the replacement water feed opening provided in the stirring blade unit is feed opening to feed the replacement water downward, and is arranged at an interval of 20 to 150 mm in each of the stiffing blades of the stirring blade unit.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 86.0
- Lexical Diversity: 2.52273
- Patent Class: 562.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['16331851', '10574273', '16088226', '10398191', '13587449']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7522043104295392
- 35 USC 102 Novelty (BERT): 0.5379746080874487
- Combined Prediction Score: 0.73078134019533
- Mean Citation Score: 303.45631999999995
- Max Citation Score: 363.1689
- Similarity Product: 238.2287176867247

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