PATENT CLAIM ANALYSIS

Application Number: 16358659
Application Type: Utility
Filing Date: 2019-03
Publication Date: 2019-07
Patent Classification: ["562", "559000"]

Abstract:
The present invention provides a process for purifying methionine. A methionine product having a purity of up to 99% or higher is obtained by separating methionine from a salt by-product through a process comprising adsorption and desorption using a macroporous adsorption resin, where the methionine content in the salt by-product is 0.03%. The yield of methionine extracted with the resin is up to 98% or higher. By using the process of the present invention, the existing production process is simplified, the quality of the methionine product is improved, and the production costs for methionine are reduced.

Claim (Index 1):
A process for purifying methionine, wherein\n methionine is separated from a salt by-product by using a macroporous adsorption resin, in which the methionine is adsorbed onto the macroporous adsorption resin, and then the methionine is recovered by desorbing from the resin using a desorbent; and the salt by-product is not absorbed onto the macroporous adsorption resin during the adsorption process, but enters an effluent resulting from the adsorption, the process mainly comprising the following steps: 1) flowing a methionine solution, from the top to the bottom, through a macroporous adsorption resin layer, and stopping resin adsorption when the content of methionine in an effluent from the resin column is greater than or equal to 1 to 50% (w/w) of the content at an inlet, in which the effluent resulting from the resin adsorption is a salt by-product; 2) resin desorption: desorbing, from the top to the bottom, the resin that has completed the adsorption in step 1) using a desorbent, and collecting the desorption solution; and 3) subsequent process: subjecting the desorption solution to subsequent treatments following an existing process.

Metadata:
- Claim Count in Document: 41.0
- Percentile: 99.0
- Lexical Diversity: 1.94545
- Patent Class: 562.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15740792', '16052419', '14431753', '14010500', '15550655']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.634684259365393
- 35 USC 102 Novelty (BERT): 0.6256536609626349
- Combined Prediction Score: 0.6337811995251172
- Mean Citation Score: 266.705374
- Max Citation Score: 542.7444
- Similarity Product: 525.7694681618214

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