PATENT CLAIM ANALYSIS

Application Number: 15863484
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["562", "519000"]

Abstract:
Processes for purifying acetic acid by distilling a process in a column in which acetic anhydride is formed in the lower portion of the column. The product stream withdrawn from the column comprises acetic acid, water at a concentration of no more than 0.2 wt. %, and acetic anhydride at a concentration of no more than 600 wppm. The process further comprises hydrating the acetic anhydride in the product stream to form a purified acetic acid product comprising acetic anhydride at a concentration of no more than 50 wppm.

Claim (Index 35):
A process for purifying acetic acid, comprising:\n a. distilling a process stream in a column, the process stream comprising acetic acid at a concentration of greater than 90 wt. %, water at a concentration from 1 to 3 wt. %, one or more C 1 -C 14  alkyl iodides in a total concentration of no more than 6 wt. %, and methyl acetate at a concentration of no more than 6 wt. %; b. forming acetic anhydride in a portion of the column having no more than 0.2 wt. % water; c. withdrawing a product stream from the column comprising acetic anhydride; and d. hydrating the product stream at a temperature from 25\u00b0 C. to 120\u00b0 C. and a pressure ranging from 0.1 MPa to 1 MPa to reduce the acetic anhydride concentration in the product stream.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 86.0
- Lexical Diversity: 2.06522
- Patent Class: 562.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15348466', '15348338', '14873636', '14874355', '14874250']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7238470742819954
- 35 USC 102 Novelty (BERT): 0.5773670915476093
- Combined Prediction Score: 0.7091990760085568
- Mean Citation Score: 396.337164
- Max Citation Score: 451.5657
- Similarity Product: 411.15021542783967

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