PATENT CLAIM ANALYSIS

Application Number: 16120288
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2018-12
Patent Classification: ["029", "025350"]

Abstract:
A crystal resonator element  2  has excitation electrodes  23 a,  23 b  formed on front and back main surfaces of a crystal resonator plate. Each of the excitation electrodes is made of a ternary alloy containing silver as a major component, a first additive, and a second additive. The first additive is a metal element having a lower sputtering yield than silver and being resistant to corrosion in an etching liquid. The second additive is an element for forming a solid solution with silver. Outer peripheries of the excitation electrodes are first additive-rich regions  9  in which the first additive is rich.

Claim (Index 4):
A method for producing a piezoelectric resonator element having a pair of excitation electrodes for driving a piezoelectric resonator plate,\n the method comprising the steps of: forming metal films, one each, on a front surface and a back surface of the piezoelectric resonator plate, as a metal film formation step, wherein each of the metal films comprises a ternary alloy containing silver as a major component, a first additive, and a second additive, the first additive being a metal element which has a lower sputtering yield than silver and which is resistant to corrosion in an etching liquid, and a second additive being an element for forming a solid solution with silver; forming a resist on a top surface of each of the metal films; and etching the metal films with use of an etching liquid which is corrosive to silver, as a metal etching step, and thereby making an outer periphery of each of the excitation electrodes rich in the first additive.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 97.0
- Lexical Diversity: 1.71875
- Patent Class: 29.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15030866', '13516365', '13142877', '11992948', '11475815']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8605377418038344
- 35 USC 102 Novelty (BERT): 0.5404877800245332
- Combined Prediction Score: 0.8285327456259043
- Mean Citation Score: 232.155742
- Max Citation Score: 392.40735
- Similarity Product: 340.80837744200534

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

Dataset: test