PATENT CLAIM ANALYSIS

Application Number: 15910508
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["438", "724000"]

Abstract:
A method of etching is described. The method includes providing a substrate having a first material containing silicon nitride and a second material that is different from the first material, forming a first chemical mixture by plasma-excitation of a first process gas containing H and optionally a noble gas, and exposing the first material on the substrate to the first chemical mixture. Thereafter, the method includes forming a second chemical mixture by plasma-excitation of a second process gas containing N and F, and optionally a noble element, and exposing the first material on the substrate to the second plasma-excited process gas to selectively etch the first material relative to the second material.

Claim (Index 17):
The method of  claim 1 , wherein the first material is part of a spacer layer conformally applied over a mandrel in a self-aligned multi-patterning (SAMP) process.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 90.0
- Lexical Diversity: 2.6087
- Patent Class: 438.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15904144', '15904157', '15687142', '15686546', '14612095']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8746136897580142
- 35 USC 102 Novelty (BERT): 0.4731152301652443
- Combined Prediction Score: 0.8344638437987373
- Mean Citation Score: 219.996146
- Max Citation Score: 235.02916
- Similarity Product: 222.6573041708493

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

Dataset: test