PATENT CLAIM ANALYSIS

Application Number: 16153940
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-02
Patent Classification: ["424", "401000"]

Abstract:
To solve the problem of providing a black iron oxide that can yield sufficient blackness, opacifying effect and covering ability even if it is only added in a small amount for use with cosmetic materials, the invention provides a black iron oxide with a high tinting strength having an octahedral shape, a specific surface in a range of 8.0 to 20.0 m 2 /g, and a particle surface coated with a layer containing one type or two or more types of inorganic compounds, wherein an L* value of a colour on reduction is 31.0 or lower and a b* value of a colour on reduction is 1.5 or lower, a production method thereof, and cosmetic materials that incorporate the same.

Claim (Index 5):
A method, comprising:\n reacting a ferrous salt solution with an alkali hydroxide to form a ferrous hydroxide slurry; adding a ferric salt solution to the ferrous hydroxide slurry to produce a ferrous hydroxide slurry containing a nucleus of black iron oxide; adjusting a pH of the ferrous hydroxide slurry containing the nucleus of black iron oxide to 12.0 to 13.0; introducing an oxygen-containing gas over the ferrous hydroxide slurry containing the nucleus of black iron oxide and heating the slurry to grow the nucleus of black iron oxide and form a ferrous hydroxide slurry containing a black iron oxide particle; and adding an inorganic metal salt to the ferrous hydroxide slurry containing the black iron oxide particle to form a black iron oxide particle having a layer containing an hydroxide or an oxide of the inorganic metal salt on a surface thereof having an octahedral shape and a specific surface area of 8.0 to 20.0 m 2 /g, wherein an L* value of a colour on reduction of the black iron oxide particle having a layer containing an hydroxide or an oxide of the inorganic metal salt on a surface thereof according to JIS K5101-3-1 is 31.0 or lower and a b* value of a colour on reduction of the black iron oxide particle having a layer containing an hydroxide or an oxide of the inorganic metal salt on a surface thereof according to JIS K5101-3-1 is 1.5 or lower.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 97.0
- Lexical Diversity: 1.58537
- Patent Class: 424.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14729487', '11433773', '10576125', '10686776', '10733373']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7344009294444569
- 35 USC 102 Novelty (BERT): 0.5242301403300238
- Combined Prediction Score: 0.7133838505330137
- Mean Citation Score: 240.194574
- Max Citation Score: 339.41714
- Similarity Product: 275.2578491779983

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