Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8098118 | Bandpass filter and process of fabricating the same A bandpass filter includes a combination of a BAW filter and a patterned planar filter with stubs. The BAW filter is composed of a plurality of piezoelectric resonators to give a specific frequency bandpass, while the planer filter is configured to attenuate frequen... | 01/17/2012 |
| 7439825 | Integrated filter including FBAR and saw resonator and fabrication method therefor An integrated filter including a film bulk acoustic resonator (FBAR) and a surface acoustic wave (SAW) resonator and a method of fabricating the integrated filter. The integrated filter includes: a substrate; a first electrode positioned in a predetermined first are... | 10/21/2008 |
| 7408429 | Coupled FBAR filter A coupled FBAR filter 100 includes first and second input/output vibration portions 110 and 111 respectively including first and second lower electrodes 104 and 106, first and second upper electrodes 105 and 107, and ... | 08/05/2008 |
| 7385467 | Resonator and component with hermetic encapsulation Proposed is a resonator which works with bulk acoustic waves and is based on a layer structure known in the art, which is arranged over a substrate. According to the invention, the total surface of the layer structure, including all resonators contained therein, is ... | 06/10/2008 |
| 7365619 | BAW apparatus A description is given of a BAW apparatus having a first BAW resonator and a second BAW resonator which are connected antiparallel to one another so as to reduce non-linear effects, in particular harmonics. ... | 04/29/2008 |
| 7358831 | Film bulk acoustic resonator (FBAR) devices with simplified packaging The encapsulated film bulk acoustic resonator (FBAR) device comprises a substrate, an FBAR stack over the substrate, an element for acoustically isolating the FBAR stack from the substrate, encapsulant covering the FBAR stack, and an acoustic Bragg reflector between... | 04/15/2008 |
| 7355324 | Silicon film bulk acoustic wave device and process of the same The present invention relates to a film bulk acoustic wave device and a method of manufacturing the same, wherein comprising an acoustic reflective layer which is formed on a substrate by removing a sacrificial layer on the substrate and becomes an empty space; an o... | 04/08/2008 |
| 7328497 | Incremental tuning process for electrical resonators based on mechanical motion A method is provided for adjusting the resonant frequency of a mechanical resonator whose frequency is dependent on the overall resonator thickness. Alternating selective etching is used to remove distinct adjustment layers from a top electrode. One of the electrode... | 02/12/2008 |
| 7323953 | Film bulk acoustic resonator and method of producing the same A film bulk acoustic resonator includes: a piezoelectric thin film that is formed on a principal surface of a substrate; and a lower electrode and an upper electrode that are arranged to sandwich the piezoelectric thin film. In this film bulk acoustic resonator, the... | 01/29/2008 |
| 7310861 | Method of producing a piezoelectric component A method for producing a piezoelectric component comprising at least two stacked crystal filters comprises the steps of depositing of the layer stack above the bottom electrode and the subsequent patterning of the upper electrically conductive layer and, if appropri... | 12/25/2007 |
| 7275292 | Method for fabricating an acoustical resonator on a substrate Method for fabricating an acoustical resonator on a substrate having a top surface. First, a depression in said top surface is generated. Next, the depression is filled with a sacrificial material. The filled depression has an upper surface level with said top surfa... | 10/02/2007 |
| 7250831 | Filter comprising inductor, duplexer using the filter and fabricating methods thereof A filter using an air gap type film bulk acoustic resonator is provided. The present filter includes a substrate on which a first port, a second port, and a ground port are formed to be connected to an external terminal; at least one first film bulk acoustic resonat... | 07/31/2007 |
| 7242270 | Decoupled stacked bulk acoustic resonator-based band-pass filter The band-pass filter has first terminals, second terminals, a first decoupled stacked bulk acoustic resonator (DSBAR), a second DSBAR, and an electrical circuit connecting the first DSBAR and the second DSBAR in series between the first terminals and the second term... | 07/10/2007 |
| 7230511 | Thin film bulk acoustic resonator, method for producing the same, filter, composite electronic component device, and communication device A thin film bulk acoustic resonator includes a piezoelectric film, and a pair of electrodes between which the piezoelectric film is interposed. The piezoelectric film includes an outer region extending outwards from at least a portion of the periphery of a resonator... | 06/12/2007 |
| 7221242 | Bulk acoustic wave resonator and manufacturing method thereof, filter using the same, semiconductor integrated circuit device using the same, and high frequency module using the same A bulk acoustic wave resonator in which the problem of the technology for forming the diaphragm structure is resolved, which is more compact and improved the frequency accuracy, and the manufacturing method thereof, a filter using the same, a semiconductor integrate... | 05/22/2007 |
| 7201041 | Analysis method using piezoelectric resonator A piezoelectric resonator is immersed in a liquid, an AC signal is applied, and a local maximum of the conductance is determined. A frequency change due to the viscosity effect is determined from two frequencies of three frequencies including a resonance frequency t... | 04/10/2007 |
| 7199683 | BAW resonator A BAW resonator includes a resonator region having a piezo-electric layer between two excitation electrodes, wherein an acoustic standing wave forms when operating the BAW resonator at a resonant frequency. Furthermore, the BAW resonator includes a leaky wave reflec... | 04/03/2007 |
| 7199504 | Film bulk acoustic resonator filter A ladder-type film bulk acoustic resonator (FBAR) filter comprises two series FBARs and two parallel FBARs. Each FBAR has a top electrode, a bottom electrode, and a piezoelectric layer sandwiched between the top and bottom electrodes. The top electrodes of the two s... | 04/03/2007 |
| 7180224 | Electronic component having a resonator and fabrication process An electronic component (1) includes a substrate (2) and at least two piezoelectric resonators (3, 4) each having an active element (6, 9), a lower electrode (5, 8) and an upper electrode (7, 10). The lower electrode (5 | 02/20/2007 |
| 7164222 | Film bulk acoustic resonator (FBAR) with high thermal conductivity The specification discloses embodiments of an apparatus comprising a film bulk acoustic resonator (FBAR) filter comprising a piezoelectric membrane having a portion thereof sandwiched between a first electrode and a second electrode, the piezoelectric membrane being... | 01/16/2007 |
| 7161448 | Acoustic resonator performance enhancements using recessed region An acoustic resonator includes a substrate, a first electrode, a layer of piezoelectric material, a second electrode, and a recessed region. The substrate has a first surface. The first electrode is adjacent the first surface of the substrate. The layer of piezoelec... | 01/09/2007 |
| 7154358 | Film bulk acoustic resonator structure and method of making A film bulk acoustic resonator is formed on a substrate having a major surface. The film bulk acoustic resonator includes an elongated stack. The elongated stack includes a layer of piezoelectric material positioned between a first conductive layer deposited on a fi... | 12/26/2006 |
| 7148604 | Piezoelectric resonator and electronic component provided therewith A piezoelectric resonator according to an embodiment of the present invention has a first transducer connected to a first signal terminal, and a second transducer connected to a second signal terminal. The first transducer and the second transducer are stacked in a ... | 12/12/2006 |
| 7141913 | Acoustic resonators An acoustic resonator of one inventive aspect includes a substrate, at least one generally crystalline primer layer provided on the substrate either directly or on top of one or more intermediate layers, a generally smooth and generally crystalline electrode layer p... | 11/28/2006 |
| 7129806 | Thin film bulk acoustic wave resonator and production method of the same A thin film bulk acoustic wave resonator and method of producing same are provided. The thin film bulk acoustic wave resonator has a superior resonance characteristic (e.g., high-orientation and densification of a piezoelectric film), wherein the thin film bulk acou... | 10/31/2006 |
| 7116040 | Electronic component and filter including the same An electronic component of an embodiment of the present invention comprises a first piezoelectric thin film resonator and a second piezoelectric thin film resonator. The first piezoelectric thin film resonator and second piezoelectric thin film resonator are a piezo... | 10/03/2006 |
| 7111500 | Analysis method using piezoelectric resonator A piezoelectric resonator is immersed in a liquid, an AC signal is applied, and a local maximum of the conductance is determined. A frequency change due to the viscosity effect is determined from two frequencies of three frequencies including a resonance frequency t... | 09/26/2006 |
| 7102465 | Frequency discrete LC filter bank An inductive (“L”)-capacitive (“C”) filter bank has application for use in a television receiver. The LC filter includes inductors configured in at least one inductive (“L”) bank, and capacitors configured in at least one capacitive (“C”) bank. The i... | 09/05/2006 |
| 7098758 | Acoustically coupled thin-film resonators having an electrode with a tapered edge Acoustically coupled resonators include a first and a second acoustic resonator. Both the first and second acoustic resonators include a first electrode, a layer of piezoelectric material, and a second electrode. The first electrode is adjacent a first surface of th... | 08/29/2006 |
| 7075214 | Piezoelectric resonator and electronic component provided therewith A piezoelectric resonator according to an embodiment of the present invention is a piezoelectric resonator for obtaining a signal of a predetermined resonance frequency from a bulk acoustic wave propagating inside a piezoelectric film. This piezoelectric resonator h... | 07/11/2006 |
| 7057477 | Integration of FBAR filter(s) and on-chip inductors A component having a FBAR filter with FBARs, and on-chip inductor are described herein. ... | 06/06/2006 |
| 7057478 | Component functioning with bulk acoustic waves having coupled resonators A component that functions with bulk acoustic waves, particularly a bandpass filter, has an increased number of degrees of design freedom in order to improve the transmission characteristics of the component. The component has BAW resonators coupled acoustically in ... | 06/06/2006 |
| 7019604 | Piezoelectric filter, duplexer, composite piezoelectric resonator, communication device and method for adjusting frequency of piezoelectric filter A piezoelectric filter and other electronic components are constructed such that the accuracy of frequency adjustment can be increased and an improvement in efficiency of the adjustment operation can be achieved. The piezoelectric filter includes a plurality of piez... | 03/28/2006 |
| 6998940 | Component operating with bulk acoustic waves and a method for producing the component A component operating with bulk acoustic waves has a carrier substrate, a thin-film resonator and an acoustic mirror arranged between the resonator and carrier substrate. The acoustic mirror is formed by at least one high acoustic impedance layer, which is covered b... | 02/14/2006 |
| 6995497 | Film bulk acoustic resonator A film bulk acoustic resonator of the present invention includes an upper electrode 104, a lower electrode 102, and a piezoelectric film 103 as well as an acoustic multilayer 120 that are provided between the upper electrode 104 an... | 02/07/2006 |
| 6988300 | Method of producing a piezoelectric element A piezoelectric element contains a piezoelectric ceramic body having a layered perovskite structure, and has the C axis selected and oriented in the thickness direction. In the piezoelectric ceramic body, line shaped electrodes are formed perpendicular to the C axis... | 01/24/2006 |
| 6975183 | BAW resonator having piezoelectric layers oriented in opposed directions A BAW resonator includes a first piezoelectric layer made of a material oriented toward a first direction, and a second piezoelectric layer made of a material oriented toward a second direction which is opposed to the first direction. The first piezoelectric layer a... | 12/13/2005 |
| 6972641 | FBAR ladder filter and method of grounding of FBAR ladder filters A FBAR ladder filter which may yield less degradation in the stopband near the passband edges than conventionally grounded FBAR ladder filters. For that purpose a thin film resonator (FBAR) ladder filter having a plurality of serially-coupled FBAR elements, each ser... | 12/06/2005 |
| 6965281 | FBAR, FBAR based duplexer device and manufacturing method thereof Disclosed herein is a film bulk acoustic resonator (FBAR), an FBAR based duplexer device, and a manufacturing method thereof, which a plurality of sacrificial layer units are formed on a substrate wafer so as to be spaced apart from one another at regular distances,... | 11/15/2005 |
| 6963257 | Coupled BAW resonator based duplexers A duplexer comprising a transmit resonator device and a receive resonator device for filtering transmit and receive signals. The resonator device has a first BAW resonator for generating an acoustic wave signal from an input electric signal, a first acoustic delay f... | 11/08/2005 |
