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 9):
A method according to  claim 1 , wherein the first vertical trenches are etched in a deep-reactive ion etch process to an initial first vertical trench depth, and the first vertical trenches are then etched deeper in a subsequent deep etching process, where second vertical trenches are etched simultaneously.

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): 0.8776566466425935
- 35 USC 102 Novelty (BERT): 0.5238413587422266
- Combined Prediction Score: 0.8422751178525568
- Mean Citation Score: 257.380142
- Max Citation Score: 317.59726
- Similarity Product: 203.5764275788605

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