PATENT CLAIM ANALYSIS

Application Number: 15744721
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["502", "300000"]

Abstract:
The present invention relates to a method of preparing a catalyst for oxidative dehydrogenation. More particularly, the present invention provides a method of preparing a catalyst for oxidative dehydrogenation providing superior selectivity and yield for a conjugated diene according to oxidative dehydrogenation by constantly maintaining pH of a coprecipitation solution using a drip-type double precipitation method to adjust an α-iron oxide content in a catalyst in a predetermined range.

Claim (Index 1):
A method of preparing a catalyst for oxidative dehydrogenation, the method comprising:\n (a) a step of preparing an aqueous precursor solution by dissolving a trivalent cation iron (Fe) precursor and a divalent cation metal (A) precursor in water in a mole ratio (Fe/A) of 2 to 10; (b) a step of constantly maintaining pH of a coprecipitation solution by, when the aqueous precursor solution is fed dropwise into a coprecipitation tank in which a basic aqueous solution is prepared, feeding a basic aqueous solution identical to or different from the basic aqueous solution dropwise along with the aqueous precursor solution; and (c) a step of obtaining a coprecipitate by filtering the coprecipitation solution.

Metadata:
- Claim Count in Document: 10.0
- Percentile: 86.0
- Lexical Diversity: 1.6
- Patent Class: 502.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15735813', '15570187', '15561316', '12921906', '12746558']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7969976190554757
- 35 USC 102 Novelty (BERT): 0.5540995649839047
- Combined Prediction Score: 0.7727078136483186
- Mean Citation Score: 342.316704
- Max Citation Score: 418.44937
- Similarity Product: 379.29611251528144

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

Dataset: test