PATENT CLAIM ANALYSIS

Application Number: 16020577
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-01
Patent Classification: ["438", "460000"]

Abstract:
A wafer processing method for processing a wafer having devices on the front side is provided. The wafer processing method includes a back grinding step of grinding the wafer to form a recess and an annular reinforcing portion surrounding the recess on the back side of the wafer, and a dividing step of cutting the wafer along division lines formed on the front side of the wafer. In the back grinding step, a taper surface is formed between the bottom surface of the recess and the annular reinforcing portion. The taper surface is inclined with respect to a direction perpendicular to the bottom surface of the recess. In the dividing step, a cutting blade is lowered to start cutting at a position radially inside the outer circumference of the wafer and is subsequently raised to stop cutting at another position radially inside the outer circumference of the wafer.

Claim (Index 2):
The wafer processing method according to  claim 1 , wherein said taper surface to be formed in said back grinding step has a taper angle defined as a supplementary angle of the angle formed between said taper surface and the bottom surface of said recess, said taper angle being set in the range of 30 to 75 degrees.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 94.0
- Lexical Diversity: 2.6
- Patent Class: 438.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14013965', '12490848', '12542270', '14504059', '14707636']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8822496603264649
- 35 USC 102 Novelty (BERT): 0.5135329200276635
- Combined Prediction Score: 0.8453779862965848
- Mean Citation Score: 266.26425
- Max Citation Score: 271.05136
- Similarity Product: 172.04258292243958

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