PATENT CLAIM ANALYSIS

Application Number: 16080489
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-01
Patent Classification: ["438", "692000"]

Abstract:
A process for chemical mechanical polishing a substrate containing tungsten and titanium is provided comprising: providing the substrate; providing a polishing composition, containing, as initial components: water; an oxidizing agent; an allylamine additive; a carboxylic acid; a source of iron ions; a colloidal silica abrasive with a positive surface charge; and, optionally pH adjusting agent; 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 the tungsten (W) is selectively polished away from the substrate relative to the titanium (Ti).

Claim (Index 1):
A method of polishing a substrate, comprising:\n providing the substrate, wherein the substrate comprises tungsten (W) and titanium (Ti); providing a chemical mechanical polishing composition, comprising, as initial components: water; an oxidizing agent; an allylamine additive selected from the group consisting of poly(allylamine hydrochloride) and poly(allylamine); a colloidal silica abrasive having a permanent positive surface charge; a carboxylic acid; a source of iron (III) ions; and, optionally, a pH adjusting agent; 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 tungsten (W) is polished away from the substrate at a tungsten (W) removal rate; wherein at least some of the titanium (Ti) is polished away from the substrate at a titanium (Ti) removal rate; wherein the chemical mechanical polishing composition provided has a removal rate selectivity for the tungsten (W) versus the titanium (Ti); and, wherein the tungsten (W) removal rate is \u226535 times higher than the titanium (Ti) removal rate.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 96.0
- Lexical Diversity: 1.95714
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['16080841', '16335552', '16335555', '15815276', '15421004']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8861444954372381
- 35 USC 102 Novelty (BERT): 0.5328715181959796
- Combined Prediction Score: 0.8508171977131123
- Mean Citation Score: 355.628614
- Max Citation Score: 373.44443
- Similarity Product: 352.1449048344171

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