PATENT CLAIM ANALYSIS

Application Number: 15744366
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["549", "548000"]

Abstract:
The invention addresses the problem of providing a method for producing 2-acetyl-4H,9H-naphtho[2,3-b]furan-4,9-dione that is suited to industrial production. The invention provides a method for producing 2-acetyl-4H,9H-naphtho[2,3-b]furan-4,9-dione by reacting 3-bromo-3-buten-2-one and 2-hydroxy-1,4-naphthoquinone in the presence of a solvent, then obtaining crystals of 2-acetyl-4H,9H-naphtho[2,3-b]furan-4,9-dione by adding an alcohol-based solvent and/or water to the reaction system, and treating the crystals by using a specific adsorbent in the presence of a solvent.

Claim (Index 16):
The production method according to  claim 15 , wherein the non-alcohol, non-ketone-based solvent A used in the step (c) is at least one selected from the group consisting of monochlorobenzene and acetonitrile.

Metadata:
- Claim Count in Document: 98.0
- Percentile: 86.0
- Lexical Diversity: 1.78723
- Patent Class: 549.0
- Transitional Phrase Type: closed
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15116850', '13634676', '13634694', '14642931', '15561828']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7444673856956915
- 35 USC 102 Novelty (BERT): 0.5175332154366941
- Combined Prediction Score: 0.7217739686697917
- Mean Citation Score: 256.67483400000003
- Max Citation Score: 290.5359200000001
- Similarity Product: 180.40782450873385

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

Dataset: test