PATENT CLAIM ANALYSIS

Application Number: 15751959
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["562", "519000"]

Abstract:
A process for stably and safely producing acetic acid without increasing an internal pressure of a distillation column is provided. The process comprises ( 1 ) a carbonylation reaction step for allowing methanol to react with carbon monoxide; ( 2 ) a flash step for separating the reaction mixture into a volatile phase and a less-volatile phase; ( 3 ) a first distillation step for separating the volatile phase into a first overhead and a crude acetic acid stream rich in acetic acid; and ( 4 ) a separation step for separating at least acetaldehyde from the first overhead. The separation step ( 4 ) comprises ( 6 ) a second distillation step for distilling the first overhead while controlling an internal pressure of a distillation column provided with a pressure control unit  68  to form a second overhead rich in acetaldehyde and methyl iodide and a bottom or lower stream, and ( 7 ) an extraction step for extracting acetaldehyde from the second overhead to form an extract rich in acetaldehyde and a raffinate rich in methyl iodide.

Claim (Index 31):
The process according to  claim 23 , wherein an off-gas produced from the process is recycled to at least one step selected form the group consisting of the reaction step and the distillation step(s).

Metadata:
- Claim Count in Document: 2.0
- Percentile: 88.0
- Lexical Diversity: 2.35443
- Patent Class: 562.0
- Transitional Phrase Type: closed
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15565604', '14440545', '15577524', '14488900', '11788455']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8029078660929833
- 35 USC 102 Novelty (BERT): 0.5353462681568509
- Combined Prediction Score: 0.77615170629937
- Mean Citation Score: 362.925106
- Max Citation Score: 369.48203
- Similarity Product: 264.5196965118945

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