PATENT CLAIM ANALYSIS

Application Number: 15750568
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-01
Patent Classification: ["424", "423000"]

Abstract:
The present disclosure relates to a hydroxyapatite obtained from porous wood, having high compressive strength and dimensions suitable for clinical applications. The porous wood has a porosity of between about 60% and about 95%, said porosity being measured after subjecting the wood to a step of pyrolysis, and is selected from among rattan, pine, abachi, balsa, sipo, oak, rosewood, kempas and walnut wood. The hydroxyapatite may be substituted with one or more ions such as magnesium, strontium, silicon, titanium, carbonate, potassium, sodium, silver, gallium, copper, iron, zinc, manganese, europium, gadolinium. Also disclosed is a bone substitute comprising hydroxyapatite obtained from porous wood. The bone substitute is utilized for the substitution and regeneration of a bone or a bone portion, preferably for bones subjected to mechanical loads, such as long bones of the leg and arm, preferably the tibia, fibula, femur, humerus and radius. The invention relates also to a process for manufacturing a biomorphic hydroxyapatite scaffold from wood.

Claim (Index 20):
A process for producing a biomorphic hydroxyapatite scaffold, comprising the steps of:\n 1) Pyrolysis: wherein a native wood is heated at a temperature in the range of 600\u00b0 C. to 1000\u00b0 C. under an inert atmosphere to yield a carbon template; 2) Carburization: wherein the carbon template is infiltrated with calcium in the vapour state at a temperature in the range 900 to 1200\u00b0 C. and at a pressure of <1000 mbar, to yield a calcium carbide template; 3) Oxidation: wherein the calcium carbide template (CaC2) is heated in air at a temperature in the range of 750 to 1300\u00b0 C., to yield a calcium oxide template; 4) Hydration: wherein the calcium oxide template is exposed to water, thus enabling water uptake in an amount of 1-25 mole %; 5) Carbonation: wherein the calcium oxide template is transformed into calcium carbonate by heating at a temperature in the range of 500 to 900\u00b0 C., under a pressure in the range from 4 to 20 MPa; and 6) Phosphatization: wherein the calcium carbonate template is treated with at least one phosphate salt to yield the biomorphic hydroxyapatite scaffold.

Metadata:
- Claim Count in Document: 59.0
- Percentile: 88.0
- Lexical Diversity: 1.88462
- Patent Class: 424.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13884123', '12672471', '15261037', '14437881', '15591617']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7226684386660066
- 35 USC 102 Novelty (BERT): 0.5385561145021359
- Combined Prediction Score: 0.7042572062496195
- Mean Citation Score: 279.15291
- Max Citation Score: 391.50027
- Similarity Product: 252.8405796580517

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

Dataset: test