H03H2003/0421 - CPC Classification Index

ClassID:

220399 ⎘

H03H2003/0421 - CPC Classification

Classification description:

Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezo-electric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient; Resonance frequency Modification of the thickness of an element

Sub-classes:

H03H2003/0428 » {of an electrode} 85
H03H2003/0435 » {of a piezoelectric layer} 58
H03H2003/0442 » {of a non-piezoelectric layer} 68

Recent Application in this class:

20220385269

2022-12-01

CRYSTAL UNIT, SEMIMANUFACTURED CRYSTAL UNIT, AND METHOD FOR MANUFACTURING CRYSTAL UNIT

20220263492

2022-08-18

Tuning fork-type vibrating reed, tuning fork-type vibrator and manufacturing method therefor

20200350889

2020-11-05

METHOD AND STRUCTURE TO REDUCE IMPACT OF EXTERNAL STRESS AND AGING OF A BAW RESONATOR

20200067485

2020-02-27

Tuning fork-type vibrating reed, tuning fork-type vibrator and manufacturing method therefor

20170237411

2017-08-17

Acoustic wave filter and method for manufacturing the same

20160294355

2016-10-06

Piezoelectric vibrator and frequency adjustment method for piezoelectric vibrator

20150017320

2015-01-15

Method of manufacturing stacked thin film piezoelectric filter

20110131774

2011-06-09

Method of manufacturing stacked thin film piezoelectric filter