PATENT CLAIM ANALYSIS

Application Number: 16265021
Application Type: Utility
Filing Date: 2019-02
Publication Date: 2019-06
Patent Classification: ["562", "590000"]

Abstract:
Isosulfan blue and processes for the preparation thereof are provided. A process is also provided for preparation of the intermediate, 2-chlorobenzaldehyde-5-sulfonic acid, sodium salt of formula (2), used in the preparation thereof and a procedure for the isolation of benzaldehyde-2, 5-disulfonic acid, di-sodium salt of the formula (3). Also provided is a process for the preparation of an isoleuco acid of formula (4), which upon oxidation gives rise to isosulfan blue of pharmaceutical grade which can be used for preparation of pharmaceutical formulations. The isolation and purification procedures provided in the process provide substantially pure isosulfan blue with HPLC purity 99.5% or greater.

Claim (Index 15):
The process of  claim 3 , wherein said purification consists of recrystallization.

Metadata:
- Claim Count in Document: 56.0
- Percentile: 99.0
- Lexical Diversity: 1.875
- Patent Class: 562.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['16265065', '16170510', '13951034', '12180057', '13310019']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7665307945777948
- 35 USC 102 Novelty (BERT): 0.5476187471680438
- Combined Prediction Score: 0.7446395898368198
- Mean Citation Score: 362.27283
- Max Citation Score: 380.2621
- Similarity Product: 376.5789745487928

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

Dataset: test