PATENT CLAIM ANALYSIS

Application Number: 16080841
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-02
Patent Classification: ["438", "693000"]

Abstract:
A process for chemical mechanical polishing a substrate containing titanium nitride and titanium is provided comprising: providing a polishing composition, containing, as initial components: water; an oxidizing agent; a linear polyalkylenimine polymer; a colloidal silica abrasive with a positive surface charge; a carboxylic acid; a source of ferric ions; and, optionally pH adjusting agent; wherein the polishing composition has a pH of 1 to 4; providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein at least some of the titanium nitride and at least some of the titanium is polished away with a selectivity between titanium nitride and titanium.

Claim (Index 1):
A method of polishing a substrate, comprising:\n providing the substrate, wherein the substrate has an exposed titanium nitride (TiN) feature and an exposed titanium (Ti) feature; providing a chemical mechanical polishing composition, comprising, as initial components: water; an oxidizing agent; a linear polyalkylenimine polymer; a colloidal silica abrasive having a positive surface charge; a carboxylic acid; a source of ferric ions; and, an optional pH adjusting agent; wherein the chemical mechanical polishing composition has a pH of 1 to 4; providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the chemical mechanical polishing pad and the substrate; and dispensing the chemical mechanical polishing composition onto the polishing surface of the chemical mechanical polishing pad at or near the interface between the chemical mechanical polishing pad and the substrate; wherein at least some of the exposed titanium nitride (TiN) feature and at least some of the exposed titanium (Ti) feature are polished away from the substrate; and wherein the chemical mechanical polishing composition provided has a removal rate selectivity between the exposed titanium nitride (TiN) feature and the exposed titanium (Ti) feature is \u2265100.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 96.0
- Lexical Diversity: 2.18571
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['16080489', '15710892', '16335552', '16335555', '15815276']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8719910595328845
- 35 USC 102 Novelty (BERT): 0.5118811380123363
- Combined Prediction Score: 0.8359800673808297
- Mean Citation Score: 281.33957200000003
- Max Citation Score: 307.84674
- Similarity Product: 240.7155462603808

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

Dataset: test