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 17):
The process for purifying methionine according to  claim 1 , comprising the following steps:\n 1) resin adsorption: flowing a methionine solution (pH 1.5) with a methionine content of 2.98% (w/w) and an ammonium sulfate content of 41.59% (w/w) evenly, from the top to the bottom, through a 100 ml XDA-1 resin bed manufactured by Xi'An Sunresin New Materials Co., Ltd at a flow rate of 1 BV/h, collecting an effluent from the resin column separately, and stopping feeding to the resin column when the methionine content in the effluent from the bottom of the resin column is 0.3%; and 2) resin desorption: desorbing, from the top to the bottom, the resin using 3 BV of 12% aqueous ammonia solution at a flow rate of 1 BV/h, and collecting the desorption solution; this desorbing solution is collected and send back to the methionine process with improvement of recycling yield, economical balance, environmental footprint and a simplification of the process. 3) The resin is regenerated by washing step and prepared for new adsorption with adsorbed solution.

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): 0.6388064320006541
- 35 USC 102 Novelty (BERT): 0.6151240605317382
- Combined Prediction Score: 0.6364381948537625
- Mean Citation Score: 266.705374
- Max Citation Score: 542.7444
- Similarity Product: 480.0576303933621

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

Dataset: test