PATENT CLAIM ANALYSIS

Application Number: 16125900
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-01
Patent Classification: ["430", "005000"]

Abstract:
A mask blank is provided, by which an alignment mark can be formed between a transparent substrate and a laminated structure of a light semitransmissive film, etching stopper film, and light shielding film during manufacture of a transfer mask. The mask blank  100  comprises a structure in which the light semitransmissive film  2,  etching stopper film  3,  light shielding film  4,  and etching mask film  5  are laminated in said order on the transparent substrate  1;  the light semitransmissive film  2  and light shielding film  3  are made of a material which can be dry etched with a fluorine-based gas; the etching stopper film and etching mask film are made of a material containing chromium; and when a thickness of the etching stopper film is Ds, an etching rate of the etching stopper film with respect to an oxygen-containing chlorine-based gas is Vs, a thickness of the etching mask film is Dm, and an etching rate of the etching mask film with respect to the oxygen-containing chlorine-based gas is Vm, a relationship: (Dm/Vm)>(Ds/Vs) is satisfied.

Claim (Index 12):
The mask blank according to  claim 1 , wherein the light shielding film includes a structure in which a lower layer and an upper layer are laminated in said order from the transparent substrate side, and\n wherein the upper layer is formed from a material containing tantalum and oxygen.

Metadata:
- Claim Count in Document: 29.0
- Percentile: 97.0
- Lexical Diversity: 2.62667
- Patent Class: 430.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14910854', '14904452', '15553634', '14892260', '15129904']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8320952045779113
- 35 USC 102 Novelty (BERT): 0.549470439665987
- Combined Prediction Score: 0.8038327280867189
- Mean Citation Score: 396.751164
- Max Citation Score: 427.71097
- Similarity Product: 357.98381328780584

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

Dataset: test