PATENT CLAIM ANALYSIS

Application Number: 16019772
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-02
Patent Classification: ["438", "620000"]

Abstract:
An interlayer insulating film is dry etched using a CHF 3  gas and by using, as a mask, a resist film having a first opening and a second opening that is wider than the first opening, thereby forming a first contact hole of a predetermined depth in the first opening and forming a second contact hole in the second opening. The gas in a furnace is switched to a C 4 F 8  gas and the first contact hole is embedded with a polymer by the C 4 F 8  gas. The gas in the furnace is switched to a CHF 3  gas. With the first contact hole protected by the polymer, the interlayer insulating film is dry etched using the same resist film as a mask, making a depth of the second contact hole a predetermined depth deeper than that of the first contact hole. Thereafter, the resist film and the polymer are removed.

Claim (Index 5):
The method according to  claim 1 , wherein\n the step (c) includes dry etching the interlayer insulating film using a mixed gas containing the first gas, the step (d) includes introducing the mixed gas containing the first gas, and depositing the reaction product produced from the mixed gas, and the step (e) includes dry etching the interlayer insulating film using the mixed gas.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 94.0
- Lexical Diversity: 3.07407
- Patent Class: 438.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['10898938', '15337405', '13661105', '12285848', '11657570']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.861412844080573
- 35 USC 102 Novelty (BERT): 0.5215658845859688
- Combined Prediction Score: 0.8274281481311125
- Mean Citation Score: 261.374592
- Max Citation Score: 266.75757000000004
- Similarity Product: 162.81354645965342

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