PATENT CLAIM ANALYSIS

Application Number: 16122940
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-03
Patent Classification: ["438", "757000"]

Abstract:
Described are compositions and methods useful for wet-etching a microelectronic device substrate that includes silicon nitride; the compositions including phosphoric acid, hexafluorosilicic acid, and an amino alkoxy silane, and optionally one or more additional optional ingredients; a wet etching method of a substrate that includes silicon nitride and silicon oxide, that uses a composition as described, can achieve useful or improved silicon nitride etch rate, useful or improved silicon nitride selectivity, a combination of these, and optionally a reduction in particles present at a substrate surface after etching.

Claim (Index 4):
The composition of  claim 3  wherein each of R1, R2, R3, and R4 is:\n an alkylamine group having a formula:\n \u2014(CH 2 ) x NW 2  \n wherein x is in a range from 1 to 12, or\n \u2014(CH 2 ) x1 \u2014NW\u2014(CH 2 ) x2 \u2014NW\u2014 . . . (CH 2 ) xn \u2014NW 2  \n \n \n \n wherein W equals H or a CH 3  group; x1, x2, . . . xn are in the range of 1-12, and n\u2264100,\n an alkoxy group having a formula \u2014O(CH 2 ) y CH 3  wherein y is in a range from 1 to 6, \n a hydroxyl group, or \n an alkyl group having a formula \u2014(CH 2 ) z CH 3  where z is in the range from 1 to 18.

Metadata:
- Claim Count in Document: 34.0
- Percentile: 97.0
- Lexical Diversity: 1.67797
- Patent Class: 438.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14331958', '12520138', '14880698', '14824786', '14573845']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8730047134455279
- 35 USC 102 Novelty (BERT): 0.5072007255215251
- Combined Prediction Score: 0.8364243146531276
- Mean Citation Score: 197.036978
- Max Citation Score: 203.26694
- Similarity Product: 116.82728732410789

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test