PATENT CLAIM ANALYSIS

Application Number: 15763331
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["427", "154000"]

Abstract:
The purpose of the present invention is to provide a method for producing a spiral wound separation membrane element that is capable of maintaining the membrane performance of a composite semipermeable membrane before processing into an element and has excellent membrane performance. This method for producing a spiral wound separation membrane element includes: a step for preparing a composite semipermeable membrane having a skin layer on the surface of a porous support; a step for forming on the skin layer a protective layer containing 35 mg/m 2  or more of an anionic polyvinyl alcohol to prepare a protective layer-equipped composite semipermeable membrane; a step for preparing an unwashed spiral wound separation membrane element using the protective layer-equipped composite semipermeable membrane; and a step for passing wash water through the unwashed spiral wound separation membrane element to remove the protective layer on the skin layer.

Claim (Index 1):
A method for producing a spiral wound separation membrane element, comprising:\n preparing a composite semipermeable membrane having a skin layer on the surface of a porous support; forming on the skin layer a protective layer containing 35 mg/m 2  or more of an anionic polyvinyl alcohol to prepare a protective layer-equipped composite semipermeable membrane; preparing an unwashed spiral wound separation membrane element using the protective layer-equipped composite semipermeable membrane; and passing wash water through the unwashed spiral wound separation membrane element to remove the protective layer on the skin layer.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 90.0
- Lexical Diversity: 2.30769
- Patent Class: 427.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12668368', '11869568', '12606518', '13642449', '15763299']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7973791379359543
- 35 USC 102 Novelty (BERT): 0.4940913244202752
- Combined Prediction Score: 0.7670503565843864
- Mean Citation Score: 186.681584
- Max Citation Score: 216.01303
- Similarity Product: 159.0195041397184

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