PATENT CLAIM ANALYSIS

Application Number: 15774847
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-11
Patent Classification: ["203", "048000"]

Abstract:
The invention relates to a process for purifying alkanesulfonic acids which comprises the steps of: (a) distilling a melt comprising crude alkanesulfonic acid ( 1 ) to completely or partly remove low boilers, wherein the low boilers are drawn off at the top of a distillation column ( 3 ) or of a one-stage evaporation apparatus and a material stream ( 7 ) comprising alkanesulfonic acid, high boilers and residual low boilers is withdrawn at the bottom of the distillation column ( 3 ) or of the one-stage evaporation apparatus, (b) sending the stream ( 7 ) comprising alkanesulfonic acid, high boilers and residual low boilers into a melt crystallization ( 9 ) as the starting melt to form crystals of the alkanesulfonic acid, of hydrates of the alkanesulfonic acid or of a mixture of both suspended in mother liquor, (c) performing a solid-liquid separation to remove the crystals from the mother liquor, (d) optionally washing the crystals to remove mother liquor adhering to the crystals.

Claim (Index 17):
The process according to  claim 4 , wherein the material stream withdrawn from the distilling is cooled before being sent to the melt crystallization and the mother liquor which is recycled into the distilling is heated.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 93.0
- Lexical Diversity: 2.34615
- Patent Class: 203.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15774722', '10414607', '12048254', '11571877', '12531170']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.720396440394528
- 35 USC 102 Novelty (BERT): 0.5843732625860356
- Combined Prediction Score: 0.7067941226136788
- Mean Citation Score: 300.4067560000001
- Max Citation Score: 509.50885
- Similarity Product: 407.61561978923686

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