PATENT CLAIM ANALYSIS

Application Number: 15961133
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-02
Patent Classification: ["438", "693000"]

Abstract:
A process for chemical mechanical polishing a substrate containing tungsten to at least reduce dishing of tungsten features of 100 μm or less. The process includes providing a substrate containing tungsten features of 100 μm or less; providing a polishing composition, containing, as initial components: water; an oxidizing agent; arginine or salts thereof; a dicarboxylic acid, a source of iron ions; a colloidal silica abrasive; and, optionally, a pH adjusting agent; and, optionally, a surfactant; and, optionally, a biocide; 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 some of the tungsten is polished away from the substrate and yet at least reducing dishing of the tungsten features of 100 μm or less.

Claim (Index 1):
A method of chemical mechanical polishing tungsten, comprising:\n providing a substrate comprising tungsten and a dielectric, wherein tungsten features have dimensions of 100 \u03bcm or less; providing a chemical mechanical polishing composition, comprising, as initial components: water; an oxidizing agent; arginine or salts thereof in amounts of 10 to 500 ppm; a colloidal silica abrasive; a dicarboxylic acid, a source of iron (III) ions; and, optionally, a pH adjusting agent; optionally, a surfactant; optionally, a biocide; 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 to remove at least some of the tungsten and reduces dishing of the tungsten features.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 91.0
- Lexical Diversity: 2.38356
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['16335545', '16335552', '16335555', '15421004', '15815292']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9117323787872263
- 35 USC 102 Novelty (BERT): 0.5916908255152546
- Combined Prediction Score: 0.8797282234600292
- Mean Citation Score: 514.439262
- Max Citation Score: 520.4756
- Similarity Product: 466.4919589818477

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