PATENT CLAIM ANALYSIS

Application Number: 16239684
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-05
Patent Classification: ["257", "077000"]

Abstract:
A method of manufacturing a silicon carbide semiconductor device includes forming a first silicon carbide layer of a first conductivity type on a front surface of a silicon carbide semiconductor substrate. A thermal oxidation film is formed on a surface of a base body including the first silicon carbide layer. The thermal oxidation film is subsequently removed using a solution containing hydrofluoric acid. The base body is washed with a mixture of ammonia water and a hydrogen peroxide solution, a mixture of hydrochloric acid and a hydrogen peroxide solution, and a dilute hydrofluoric acid. The base body is held at temperature of 700 degrees C. to 1700 degrees C., and an insulating film is deposited on the base body.

Claim (Index 2):
A method of manufacturing a silicon carbide semiconductor device, the method comprising:\n forming a first silicon carbide layer of a first conductivity type on a front surface of a silicon carbide semiconductor substrate; forming a thermal oxidation film on a surface of a base body including the first silicon carbide layer; removing the thermal oxidation film by a solution containing hydrofluoric acid; washing the base body with a mixture of ammonia water and a hydrogen peroxide solution, a mixture of hydrochloric acid and a hydrogen peroxide solution, and a dilute hydrofluoric acid; holding the base body at a temperature of 700 degrees C. to 1000 degrees C. in a hydrogen atmosphere; and depositing an insulating film on the base body.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 99.0
- Lexical Diversity: 2.15254
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15938481', '14408052', '14784272', '14784560', '10824497']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9025082026159216
- 35 USC 102 Novelty (BERT): 0.5138725467280097
- Combined Prediction Score: 0.8636446370271302
- Mean Citation Score: 241.073174
- Max Citation Score: 288.3736
- Similarity Product: 220.208335174656

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

Dataset: test