PATENT CLAIM ANALYSIS

Application Number: 15973672
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-06
Patent Classification: ["257", "415000"]

Abstract:
Provided is a semiconductor pressure sensor that can maintain high reliability and measure pressure with high accuracy without increasing the size thereof and that has hydrogen permeation prevention performance. The semiconductor pressure sensor includes: a first semiconductor substrate having a recess formed thereon; a second semiconductor substrate joined to the first semiconductor substrate with an oxide film interposed therebetween; a reference pressure chamber formed as a space surrounded by the recess of the first semiconductor substrate and the second semiconductor substrate; a piezoresistor formed on a surface of the second semiconductor substrate that receives pressure, along an outer periphery of the reference pressure chamber; and a protective film formed on the surface of the second semiconductor substrate that receives pressure, and side surfaces of the second semiconductor substrate and the oxide film.

Claim (Index 2):
A semiconductor pressure sensor comprising:\n a first semiconductor substrate having a plurality of recesses formed thereon; an intermediate semiconductor substrate joined to the first semiconductor substrate with a first oxide film interposed therebetween; a second semiconductor substrate joined to the intermediate semiconductor substrate with a second oxide film interposed therebetween; a first reference pressure chamber formed as a space surrounded by a first recess of the first semiconductor substrate and the intermediate semiconductor substrate; a second reference pressure chamber formed as a space surrounded by a second recess formed on the first, semiconductor substrate, the intermediate semiconductor substrate, and the second semiconductor substrate, the intermediate semiconductor substrate having a through hole communicating with the second recess of the first semiconductor substrate; piezoresistors formed on a surface of the second semiconductor substrate that receives pressure, along outer peripheries of the first reference pressure chamber and the second reference pressure chamber; and a protective film formed on the surface of the second semiconductor substrate that receives pressure, a side surface of the second semiconductor substrate, a side surface of the intermediate semiconductor substrate, a side surface of the first oxide film, and a side surface of the second oxide film.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 93.0
- Lexical Diversity: 2.27419
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15933490', '12949459', '13757701', '13205923', '14313704']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.912167012854628
- 35 USC 102 Novelty (BERT): 0.4796802838604306
- Combined Prediction Score: 0.8689183399552084
- Mean Citation Score: 197.961384
- Max Citation Score: 260.823
- Similarity Product: 256.7608238554001

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