PATENT CLAIM ANALYSIS

Application Number: 15889235
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-06
Patent Classification: ["424", "400000"]

Abstract:
The invention relates to a selenium-doped hydroxyapatite and a preparation method thereof. The selenium-doped hydroxyapatite provided is a single crystal comprising a rod-like structure, a uniform morphology, and a good dispersibility. The preparation method comprises adding a mixed solution of a phosphate and a selenite dropwise to a mixed solution of a calcium salt and a dispersing agent, and reacting for 1.5-2.5 hrs at a controlled temperature of 80-90° C., to obtain a solution of a calcium phosphate amorphous precursor, followed by performing a hydrothermal reaction at 190-210° C., to obtain a selenium-doped hydroxyapatite comprising a rod-like structure. Compared with selenium-doped hydroxyapatite with severe agglomeration, the selenium-doped hydroxyapatite provided in the present invention comprises good dispersibility and able to have better prevention of clogging problem in human body when in use, thus having a good prospect using as a multi-functional new material for bone repair in patients as a repair material for bone defects, an anti-tumor, etc.

Claim (Index 7):
The method according to  claim 4 , wherein a molar ratio of the elements calcium, phosphorous and selenium is 1:(0.42-0.58):(0.17-0.006).

Metadata:
- Claim Count in Document: 1.0
- Percentile: 88.0
- Lexical Diversity: 1.98837
- Patent Class: 424.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['11662629', '12659688', '13878399', '11813368', '10027656']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.704254885445656
- 35 USC 102 Novelty (BERT): 0.512549356954722
- Combined Prediction Score: 0.6850843325965627
- Mean Citation Score: 214.855832
- Max Citation Score: 218.72563
- Similarity Product: 133.91275279334067

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