PATENT CLAIM ANALYSIS

Application Number: 16002147
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-12
Patent Classification: ["502", "400000"]

Abstract:
To provide an oxygen storage material that is capable of exhibiting an excellent oxygen storage capacity (OSC) even at a low temperature of about 300° C. and has a sufficiently high efficiency of use of cerium contained therein. An oxygen storage material including a ceria-zirconia-copper oxide-based composite oxide that contains cerium, zirconium, and copper, in which at least part of the copper is solid-dissolved in a composite oxide of the cerium and the zirconium, the ceria-zirconia-copper oxide-based composite oxide has a composition expressed by the following chemical formula (1):   Ce x Zr y Cu z O 2-z   (1) where x, y, and z are numbers each satisfying conditions of x=0.3 to 0.7, y=0.15 to 0.7 (exclusive of y=0.7), z=0 to 0.15 (exclusive of z=0), and x+y+z=1, and a specific surface area of the ceria-zirconia-copper oxide-based composite oxide is 2 to 50 m 2 /g.

Claim (Index 6):
A method for producing an oxygen storage material, comprising:\n mixing\n at least one cerium compound selected from the group consisting of cerium chloride, cerium nitrate, cerium sulfate, cerium acetate, and cerium oxide, \n at least one zirconium compound selected from the group consisting of zirconium chloride, zirconium nitrate, zirconium sulfate, zirconium acetate, and zirconium oxide, \n at least one copper compound selected from the group consisting of copper chloride, copper nitrate, copper sulfate, copper acetate, and copper oxide, and \n a hydrophilic organic compound in a solvent, to obtain a mixture; and \n obtaining the oxygen storage material comprising the ceria-zirconia-copper oxide-based composite oxide according to  claim 1  from the mixture through a solution combustion synthesis.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 94.0
- Lexical Diversity: 1.89773
- Patent Class: 502.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15462984', '14897940', '15342665', '15026760', '14910378']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7975691279852191
- 35 USC 102 Novelty (BERT): 0.5194447710763532
- Combined Prediction Score: 0.7697566922943324
- Mean Citation Score: 307.80072200000006
- Max Citation Score: 316.3256
- Similarity Product: 220.6125356023312

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