PATENT CLAIM ANALYSIS

Application Number: 15981327
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-12
Patent Classification: ["438", "050000"]

Abstract:
The disclosure relates to a method for manufacturing recessed micromechanical structures in a MEMS device wafer. First vertical trenches in the device wafer define the horizontal dimensions of both level and recessed structures. The horizontal face of the device wafer and the vertical sidewalls of the first vertical trenches are then covered with a self-supporting etching mask which is made of a self-supporting mask material, which is sufficiently rigid to remain standing vertically in the location where it was deposited even as the sidewall upon which it was deposited is etched away. Recess trenches are then etched under the protection of the self-supporting mask. The method allows a spike-preventing aggressive etch to be used for forming the recess trenches, without harming the sidewalls in the first vertical trenches.

Claim (Index 11):
A method according to  claim 1 , wherein the number of recess etching masks is an integer N which is greater than one, and that, before proceeding to step g), the following steps f2)-f3) are repeated N\u22121 times to manufacture recessed micromechanical structures etched to N different recess depths:\n f2) removing one recess etching mask from the horizontal face of the device wafer, and f3) etching vertical trenches in the unprotected horizontal regions, whereby the depth of the vertical trenches forms at least a part of the recess depth of a recessed micromechanical structure.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 93.0
- Lexical Diversity: 1.90141
- Patent Class: 438.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15147233', '14712987', '15147197', '14706095', '11322842']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8778140688087215
- 35 USC 102 Novelty (BERT): 0.5198497171487959
- Combined Prediction Score: 0.842017633642729
- Mean Citation Score: 257.380142
- Max Citation Score: 317.59726
- Similarity Product: 233.6775853816104

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