PATENT CLAIM ANALYSIS

Application Number: 16351890
Application Type: Utility
Filing Date: 2019-03
Publication Date: 2019-09
Patent Classification: ["355", "073000"]

Abstract:
A substrate holding apparatus that holds a substrate is provided. The apparatus comprises a rotary shaft which rotates about a vertical axis and includes a suction path leading from an upper end of the rotary shaft, and a holding unit which includes a suction hole formed in a rotation center, is fixed at the upper end of the rotary shaft such that the suction hole communicates with the suction path, and holds the substrate by sucking the substrate, wherein a plurality of vent holes for introducing an external gas into a space between the holding unit and the substrate are formed at positions rotationally symmetric with respect to the rotation center of the holding unit with an angle to face a back surface of the substrate placed on the holding unit.

Claim (Index 5):
The apparatus according to  claim 1 , further comprising:\n a control valve which is provided in a gas flow path between the suction path and a vacuum source for sucking a gas, and is capable of switching between a suction state, in which suction by the vacuum source is performed, and an atmospheric air open state; and a check valve which is provided in the suction path and prevents inflow of a gas into the space, wherein the apparatus holds the substrate by setting the control valve in the suction state to suck a gas in the space by the vacuum source and introducing the external gas into the space from the plurality of vent holes, and releases a held state of the substrate by setting the control valve in the atmospheric air open state to make a portion from the vacuum source to the check valve open to atmospheric air and introducing the external gas into the space from the plurality of vent holes.

Metadata:
- Claim Count in Document: 15.0
- Percentile: 99.0
- Lexical Diversity: 2.04478
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12702514', '10629678', '11305019', '12510572', '10819356']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7047210877992548
- 35 USC 102 Novelty (BERT): 0.4455950664241324
- Combined Prediction Score: 0.6788084856617426
- Mean Citation Score: 152.044098
- Max Citation Score: 157.28714
- Similarity Product: 124.63258636779786

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