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 11):
A method of producing a composite material-reinforced pressure vessel, the method comprising:\n winding the tow prepreg according to  claim 1  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 tow prepreg.

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): 0.7704004788825148
- 35 USC 102 Novelty (BERT): 0.5434499074350115
- Combined Prediction Score: 0.7477054217377646
- Mean Citation Score: 330.47502999999995
- Max Citation Score: 409.18146
- Similarity Product: 309.3201043449676

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