PATENT CLAIM ANALYSIS

Application Number: 16226498
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-04
Patent Classification: ["257", "774000"]

Abstract:
A method of fabricating a contact hole structure includes providing a substrate with an epitaxial layer embedded therein. Next, an interlayer dielectric is formed to cover the substrate. After that, a first hole is formed in the interlayer dielectric and the epitaxial layer. Later, a mask layer is formed to cover a sidewall of the first hole and expose a bottom of the first hole. Subsequently, a second hole is formed by etching the epitaxial layer at the bottom of the first hole and taking the mask layer and the interlayer dielectric as a mask, wherein the first hole and the second hole form a contact hole. Then, the mask layer is removed. Finally, a silicide layer is formed to cover the contact hole.

Claim (Index 3):
The contact hole structure of  claim 1 , further comprising:\n a conductive layer filling in the contact hole.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 98.0
- Lexical Diversity: 2.76
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15726358', '15700171', '15837530', '11398192', '13137733']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9064500656516984
- 35 USC 102 Novelty (BERT): 0.4922670837268054
- Combined Prediction Score: 0.865031767459209
- Mean Citation Score: 159.169402
- Max Citation Score: 227.15047
- Similarity Product: 204.8728428034151

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