PATENT CLAIM ANALYSIS

Application Number: 15986963
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-09
Patent Classification: ["523", "400000"]

Abstract:
Provided are a tow prepreg comprising a reinforcing fiber bundle impregnated with a matrix resin composition, wherein the matrix resin composition contains a component (A) (an epoxy resin), a component (B) (dicyandiamide), a component (C) (a curing accelerator), and a component (D) (a core-shell type rubber particle), and a content of the component (D) with respect to 100 parts by mass of the component (A) is from 20 to 70 parts by mass, a viscosity is from 3 Pa·s to 80 Pa·s at 30° C., and a minimum viscosity to be obtained when a viscosity is measured by raising a temperature from room temperature to 130° C. at a rate of temperature rise of 2.0° C./min is from 0.04 Pa·s to 1 Pa·s, which exhibits excellent drape property and tackiness and less stickiness and can be unwound at a high speed; and a composite material-reinforced pressure vessel having fewer voids in a reinforcing layer which is obtainable by using the tow prepreg, a high burst pressure, and an excellent appearance due to appropriate resin flow.

Claim (Index 12):
A method of producing a composite material-reinforced pressure vessel, the method comprising:\n preparing a matrix resin composition which contains a component (A), a component (B), a component (C), and a component (D), wherein the component (A) is an epoxy resin, the component (B) is dicyandiamide, the component (C) is a curing accelerator, and the component (D) is a core-shell type rubber particle and a content of the component (D) with respect to 100 parts by mass of the component (A) is from 20 to 70 parts by mass and has a viscosity of from 3 Pa\u00b7s to 80 Pa\u00b7s at 30\u00b0 C. and a minimum viscosity of from 0.04 Pa\u00b7s to 1 Pa\u00b7s to be obtained when a viscosity of the matrix resin composition is measured by raising a temperature from room temperature to 130\u00b0 C. at a rate of temperature rise of 2.0\u00b0 C./min; impregnating a reinforcing fiber bundle with the matrix resin composition to fabricate a resin-impregnated reinforcing fiber bundle; winding the resin-impregnated reinforcing fiber bundle onto a rotating metal liner or resin liner to fabricate a pressure vessel intermediate body; and heating the pressure vessel intermediate body to cure the matrix resin composition contained in the resin-impregnated reinforcing fiber bundle.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 93.0
- Lexical Diversity: 2.09091
- Patent Class: 523.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14402147', '15509574', '15562544', '13881790', '14351387']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7710527880724773
- 35 USC 102 Novelty (BERT): 0.5420699110770625
- Combined Prediction Score: 0.7481545003729358
- Mean Citation Score: 330.47502999999995
- Max Citation Score: 409.18146
- Similarity Product: 289.67513514493703

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