PATENT CLAIM ANALYSIS

Application Number: 16225224
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-06
Patent Classification: ["568", "742000"]

Abstract:
The invention provides a method for purifying dihydroxynaphthalene, which is capable of suppressing soft particle generation and obtaining dihydroxynaphthalene serving as a raw material of a resin and composition excellent in filterability. The method for purifying dihydroxynaphthalene includes the step of removing a sulfur content in the dihydroxynaphthalene with an adsorbent, and neutral alumina is used as the adsorbent.

Claim (Index 12):
The method for purifying dihydroxynaphthalene according to  claim 6 , wherein a sulfur element content among constituent elements contained in the purified dihydroxynaphthalene is 100 ppm or less in terms of mass.

Metadata:
- Claim Count in Document: 44.0
- Percentile: 98.0
- Lexical Diversity: 1.53659
- Patent Class: 568.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15079999', '12858046', '11912212', '12084909', '10019287']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6920059915897586
- 35 USC 102 Novelty (BERT): 0.4939047930157325
- Combined Prediction Score: 0.6721958717323561
- Mean Citation Score: 134.929794
- Max Citation Score: 145.4692
- Similarity Product: 93.2624442281723

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