PATENT CLAIM ANALYSIS

Application Number: 16012492
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-12
Patent Classification: ["252", "079400"]

Abstract:
Embodiments of the subject application provide a polishing composition for a magnetic disk substrate, whereby the polishing composition contains colloidal silica, at least one of a phosphorus-containing inorganic acid and an organic acid, and water. According to at least one embodiment, the colloidal silica in the polishing composition has an average particle diameter (D50) in the range of 5 to 50 nm observed by a transmission electron microscope. In measuring a volume-based particle size distribution of the colloidal silica by dynamic light scattering, when the particle size distribution is measured by adjusting a concentration of colloidal silica particles to be 0.25 mass %, the colloidal silica contains 10 vol % or less of colloidal silica particles larger than 50 nm. According to at least one embodiment, the polishing composition has 1 to 50 mass % of the colloidal silica, and the polishing composition has the pH (25° C.) in the range of 0.1 to 4.0.

Claim (Index 3):
The polishing composition for the magnetic disk substrate according to  claim 1 , where the phosphorus-containing organic acid is at least one type of compound selected from the group consisting of 2-aminoethylphosphonic acid, 1-hydroxyethylidene-1,1-diphosphonic acid, aminotri (methylenephosphonic acid), ethylenediaminetetra (methylenephosphonic acid), diethylenetriaminepenta (methylenephosphonic acid), ethan-1,1-diphosphonic acid, ethan-1,1,2-triphosphonic acid, ethan-1-hydroxy-1,1,2-triphosphonic acid, ethan-1,2-dicarboxy-1,2-diphosphonic acid, methane hydroxyphosphonic acid, 2-phosphonobutan-1,2-dicarboxylic acid, 1-phosphonobutan-2,3,4-tricarboxylic acid, and \u03b1-methylphosphonosuccinic acid.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 94.0
- Lexical Diversity: 2.16456
- Patent Class: 252.0
- Transitional Phrase Type: closed
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15278911', '15684543', '15590787', '15934786', '15278351']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8624404433369334
- 35 USC 102 Novelty (BERT): 0.4898859964166865
- Combined Prediction Score: 0.8251849986449087
- Mean Citation Score: 281.332956
- Max Citation Score: 286.5322
- Similarity Product: 260.33928932991023

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

Dataset: test