PATENT CLAIM ANALYSIS

Application Number: 16071516
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-04
Patent Classification: ["546", "296000"]

Abstract:
4-Alkoxy-3-hydroxypicolinic acids may be conveniently prepared from 4,6-dibromo-3-hydroxypicolinonitrile in a series of chemical steps selected from bromo substitution, nitrile hydrolysis and halogen reduction that are conducted as a single pot process. 4,6-Dibromo-3-hydroxypicolinonitrile may be prepared from furfural in a series of chemical steps selected from cyano-amination, amine salt formation and bromination-rearrangement.

Claim (Index 12):
A process for the preparation of a compound of Formula G from a compound of Formula D which comprises the following steps: a) creating a first mixture by combining together a 2-phase water-organic solvent system, an ammonia source, a cyanide source and the compound of Formula D; b) separating a second mixture from the first mixture containing the compound of Formula E as a solution in the organic solvent; c) adding an aqueous solution of a mineral acid to the second mixture to form a third mixture wherein the mineral acid is HCl, HBr, H 2 SO 4 , HNO 3  or H 3 PO 4 ; d) separating a fourth mixture from the third mixture that is an aqueous mixture containing a compound of Formula F; wherein X is Cl, Br, HSO 4 , NO 3  or H 2 PO 4 ; e) adding a brominating agent including a bromide compound with an oxidant to the fourth mixture to form a fifth mixture; and f) isolating the compound of Formula G from the fifth mixture.

Metadata:
- Claim Count in Document: 31.0
- Percentile: 95.0
- Lexical Diversity: 1.44737
- Patent Class: 546.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14794450', '14794430', '16071512', '15339190', '15443446']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7798273209906064
- 35 USC 102 Novelty (BERT): 0.5273646919873746
- Combined Prediction Score: 0.7545810580902832
- Mean Citation Score: 310.3244660000001
- Max Citation Score: 342.7276
- Similarity Product: 304.61828097469805

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