PATENT CLAIM ANALYSIS

Application Number: 15937849
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["438", "653000"]

Abstract:
A method of forming a semiconductor memory device includes following steps. First of all, a dielectric layer is formed on a semiconductor substrate, and a conductive pad is formed in the dielectric layer. Then, a stacked structure is formed on the dielectric layer, and the stacked structure includes a first layer, a second layer and a third layer stacked one over another on the conductive pad. Next, a patterned mask layer is formed on the stacked structure, and a portion of the stacked structure is removed, to form an opening in the stacked structure, with the opening having a taped sidewall in the second layer and the first layer. After that, the taped sidewall of the opening in the second layer is vertically etched, to form a contact opening in the stacked structure. Finally, the patterned mask layer is removed.

Claim (Index 9):
The method of forming the semiconductor memory device according to  claim 1 , wherein the removing of the patterned mask layer is performed by using an etching selectivity between the second layer and the pattern mask layer.

Metadata:
- Claim Count in Document: 41.0
- Percentile: 90.0
- Lexical Diversity: 2.92593
- Patent Class: 438.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15871037', '13342322', '10906166', '10691485', '10776394']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8670775828103187
- 35 USC 102 Novelty (BERT): 0.4741037360800491
- Combined Prediction Score: 0.8277801981372918
- Mean Citation Score: 184.931662
- Max Citation Score: 196.95668
- Similarity Product: 160.28632355495452

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