PATENT CLAIM ANALYSIS

Application Number: 16080441
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 tungsten and titanium is provided comprising: providing the substrate; providing a polishing composition, containing, as initial components: water; an oxidizing agent; a chitosan; a dicarboxylic acid, wherein the dicarboxylic acid is selected from the group consisting of propanedioic acid and 2-hydroxypropanedioic 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 some of the tungsten (W) and some of the titanium (Ti) is polished away from the substrate with a removal selectivity for the tungsten (W) relative to the titanium (Ti).

Claim (Index 7):
The method of  claim 1 , wherein the chemical mechanical polishing composition, provided comprises, as initial components:\n the water; 1.75 to 3 wt % of the oxidizing agent, wherein the oxidizing agent is hydrogen peroxide; 50 to 80 ppm by mass of the chitosan, wherein the chitosan has a weight average molecular weight distribution of 150,000 to 350,000 Daltons; 0.2 to 2 wt % of the colloidal silica abrasive; 900 to 1,100 ppm by mass of the dicarboxylic acid, wherein the dicarboxylic acid is propanedioic acid; 250 to 400 ppm by mass of the source of iron (III) ions, wherein the source of iron (III) ions is ferric nitrate; and, optionally, the pH adjusting agent; wherein the chemical mechanical polishing composition has a pH of 2 to 2.5.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 96.0
- Lexical Diversity: 2.26316
- Patent Class: 438.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['16080489', '16080841', '15421004', '16335552', '16335555']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8980581938583974
- 35 USC 102 Novelty (BERT): 0.5513908999499072
- Combined Prediction Score: 0.8633914644675483
- Mean Citation Score: 368.096486
- Max Citation Score: 416.7497
- Similarity Product: 351.07380351516014

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