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 3):
The method according to  claim 2 , further comprising\n switching the first gas in the chamber to a third gas after the step (d) and before the step (e).

Metadata:
- Claim Count in Document: 5.0
- Percentile: 94.0
- Lexical Diversity: 3.07407
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['10898938', '15337405', '13661105', '12285848', '11657570']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8454679582943525
- 35 USC 102 Novelty (BERT): 0.5298960747397427
- Combined Prediction Score: 0.8139107699388916
- Mean Citation Score: 261.374592
- Max Citation Score: 266.75757000000004
- Similarity Product: 128.03665859229864

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