PATENT CLAIM ANALYSIS

Application Number: 16097383
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-05
Patent Classification: ["174", "252000"]

Abstract:
A ceramic circuit substrate according to the present invention includes a ceramic substrate, a copper circuit made of a copper-based material bonded, via a bonding layer, to a surface of the ceramic, and a copper heat sink made of the copper-based material bonded, via a bonding layer, to the other surface of the ceramic. The bonding layers each include a brazing material component including two or more kinds of metals, such as Ag, and an active metal having a predetermined concentration. The bonding layers each include a brazing material layer including the brazing material component, and an active metal compound layer containing the active metal. A ratio of a bonding area of the active metal compound layer in a bonding area of each of the bonding layers is 88% or more.

Claim (Index 1):
A ceramic circuit substrate comprising:\n a ceramic substrate; a copper circuit made of a copper-based material bonded, via a bonding layer, to a surface of the ceramic; and a copper heat sink made of the copper-based material bonded, via a bonding layer, to the other surface of the ceramic, wherein the bonding layers each include a brazing material component comprising at least two or more kinds of metals together with Ag serving as an essential component, and at least one or more kinds of components of active metals, the active metals having a content ranging, relative to a metallic element content in each of the whole bonding layers, from 0.5 mass % to 2.0 mass % inclusive, wherein the bonding layers each include a brazing material layer comprising the brazing material component, and an active metal compound layer containing one of the active metals, the active metal compound layer being formed along a bonded interface with the ceramic substrate, and wherein, further, a ratio of a bonding area between the active metal compound layer and the ceramic substrate in a bonding area between each of the bonding layers and the ceramic substrate is 88% or more.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 97.0
- Lexical Diversity: 2.58929
- Patent Class: 174.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12307301', '14772913', '14775819', '15021460', '14127476']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8477909222816268
- 35 USC 102 Novelty (BERT): 0.5070213634088547
- Combined Prediction Score: 0.8137139663943496
- Mean Citation Score: 263.67142
- Max Citation Score: 292.60278
- Similarity Product: 213.4509537172079

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