ROFS Microsystem (Tianjin) Co., Ltd

China

 
Total IP 211
Total IP Rank # 5,949
IP Activity Score 3.2/5.0    298
IP Activity Rank # 2,394

Patents

Trademarks

2 0
0 0
209 0
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Last Patent 2024 - Bulk acoustic resonator and manu...
First Patent 2016 - Wideband piezoelectric filter wi...

Latest Inventions, Goods, Services

2023 Invention Bulk acoustic resonator having protrusions or recesses provided on lower side of piezoelectric la...
Invention Bulk acoustic resonator and manufacturing method therefor, filter, and electronic device. The pre...
2022 Invention Bulk acoustic resonator comprising gap electrode, filter and electronic device. The present inven...
Invention Bulk acoustic resonator having two piezoelectric layers, filter, and electronic device. The prese...
Invention Bulk acoustic wave resonator having plurality of bottom electrode layers, filter, and electronic ...
Invention Film bulk acoustic resonator having multiple bottom electrode layers, filter, and electronic devi...
Invention Bulk acoustic wave resonator having plurality of bottom electrode layers, filter and electronic d...
Invention Bulk acoustic resonator having plurality of bottom electrode layers, and filter and electronic de...
Invention Bulk acoustic resonator comprising silicon carbide substrate, filter, and electronic device. The ...
Invention Bulk acoustic resonator, filter, and electronic device. The present invention relates to a bulk a...
Invention Bulk acoustic resonator, filter and electronic device. The present invention relates to a bulk ac...
Invention Bulk acoustic wave resonator having thickened electrode, filter, and electronic device. The prese...
Invention Bulk acoustic resonator having protrusion and/or recess on lower side of piezoelectric layer, and...
Invention Single-crystal piezoelectric bulk acoustic resonator and manufacturing method therefor, filter an...
Invention Semiconductor component and dicing method therefor, filter, and electronic device. A dicing metho...
Invention Bulk acoustic resonator having tungsten electrode, filter, and electronic device. The present inv...
Invention Bulk acoustic wave resonator and manufacturing method therefor, filter, and electronic device. Th...
Invention Resonator and manufacturing method therefor, filter, and electronic device. The present invention...
Invention Duplexer, method for suppressing high-order resonance of duplexer, and electronic device. Disclos...
Invention Filter, multiplexer, and electronic device. Disclosed in the present invention are a filter, a du...
Invention Filter having scandium-doped aluminum nitride as piezoelectric layer and electronic device. The p...
2021 Invention Multiplexer, method for improving isolation of multiplexer, and communication device. Disclosed a...
Invention Single-crystal acoustic resonator, filter, and electronic device. Provided is a bulk acoustic res...
Invention Bulk acoustic resonator having temperature compensation layer, and filter and electronic device. ...
Invention Acoustic wave resonator having temperature compensation layer, and filter and electronic device. ...
Invention Acoustic wave filter, multiplexer, and communication device. Disclosed are an acoustic wave filte...
Invention Method, acoustic wave filter, multiplexer, and communication device for improving nonlinear perfo...
Invention Multiplexer, method for improving isolation of multiplexer, and communication device. The present...
Invention Filter comprising doped resonator, and multiplexer and communication device. Disclosed are a filt...
Invention Acoustic wave filter, multiplexer, and communication device. Disclosed in the present invention a...
Invention Bulk acoustic resonator, bulk acoustic resonator assembly, filter and electronic device. The pres...
Invention Duplexer design method, duplexer, multiplexer, and communication device. A duplexer design method...
Invention Bulk acoustic resonator and assembly, filter, and electronic device. The present disclosure relat...
Invention Bulk acoustic resonator, doping concentration determining method, filter, and electronic device. ...
Invention Bulk acoustic resonator, doping concentration determination method, filter, and electronic device...
Invention Bulk acoustic resonator and assembly, method for adjusting electromechanical coupling coefficient...
Invention Bulk acoustic resonator having voided layer, and assembly, manufacturing method, filter and elect...
Invention Bulk acoustic wave resonator having acoustic resistance layer, and assembly thereof and manufactu...
Invention Filter assembly and manufacturing method therefor, and electronic device. The present disclosure ...
Invention Method for optimising out-of-band suppression of filter, and filter, multiplexer, and communicati...
Invention Temperature compensating filter optimization method and temperature compensating filter, multiple...
Invention Bulk acoustic resonator with top electrode having upper and lower gaps, manufacturing method ther...
Invention Mems loudspeaker and manufacturing method therefor, and electronic device. Provided in the presen...
Invention Mems speaker and electronic device. An MEMS speaker and an electronic device. The MEMS speaker ha...
2020 Invention Mems ultrasonic transducer-based miniature loudspeaker. Disclosed in the present invention is a m...