| Patents for H01G 7 - Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture (2,230) |
|---|
| 08/26/1999 | WO1999033075A3 Digitally adjustable electronic capacitor |
| 07/28/1999 | EP0931326A1 Method for manufacturing a low self-inductance capacitor |
| 07/27/1999 | CA2004241C Ceramic case capacitor |
| 07/14/1999 | EP0928959A2 Semiconductor variable capacitor and method of making same |
| 07/01/1999 | WO1999033075A2 Digitally adjustable electronic capacitor |
| 06/24/1999 | DE19758345A1 Digitally adjustable capacitance for filter, oscillator, matching circuits, etc. |
| 06/15/1999 | US5912796 Metallized film capacitor and manufacturing process |
| 06/09/1999 | EP0921633A1 Improved frequency shifter with low power dissipation |
| 05/27/1999 | WO1999026261A1 Ferroelectric relaxor polymers |
| 05/25/1999 | CA2131100C Crystallographically aligned ferroelectric films usable in memories and method of crystallographically aligning perovskite films |
| 05/11/1999 | CA2066762C Capacitance humidity sensor |
| 04/14/1999 | EP0909024A2 Impedance matching device |
| 04/08/1999 | WO1999016532A1 Oily mist resistant electret articles and filters |
| 04/08/1999 | CA2303004A1 Oily mist resistant electret articles and filters |
| 04/07/1999 | EP0907212A1 Ceramic element, method of manufacturing ceramic element, display, relay device, and capacitor |
| 03/16/1999 | CA2151063C C-axis perovskite thin films grown on silicon dioxide |
| 03/16/1999 | CA2006161C Capacitive pressure sensor with minimized dielectric drift |
| 03/10/1999 | EP0714463B1 Method of charging electret filter media |
| 03/04/1999 | WO1998056836A3 Electrets |
| 02/16/1999 | US5871845 Electret fibers having improved charge stability, process for the production thereof and textile material containing these electret fibers. |
| 02/10/1999 | EP0895642A1 Variable capacitor |
| 02/02/1999 | US5867360 Variable capacitor |
| 12/17/1998 | WO1998056836A2 Electrets |
| 12/17/1998 | DE19725253A1 Electrets containing cyclo-olefin] copolymers |
| 11/04/1998 | CN1040563C Nonwoven fabric in electret state and its production method |
| 10/06/1998 | US5818683 Variable capacitor |
| 09/15/1998 | US5807774 Simple method of fabricating ferroelectric capacitors |
| 08/26/1998 | CN1191377A Varirable capacitor and LC composite part using same |
| 07/29/1998 | CN1188994A Voltage-controlled variable-passband filter and high-frequency circuit module incorporating same |
| 07/14/1998 | US5781404 Electrode interface for high-dielectric-constant materials |
| 07/07/1998 | US5777839 Capacitor using dielectric film |
| 06/24/1998 | CN1185637A 可变电容器 Variable capacitor |
| 06/23/1998 | US5771148 Intercalation-based voltage variable capacitor |
| 06/04/1998 | WO1998024130A1 Ceramic element, method of manufacturing ceramic element, display, relay device, and capacitor |
| 06/04/1998 | DE19654959A1 Azo:pigment dyes |
| 06/03/1998 | EP0845554A2 Method of charging electret filter media |
| 05/27/1998 | CN1182947A Metal coated membrane capacitor and making method |
| 05/26/1998 | US5757090 Folded dielectric film element and method for maufacturing the same |
| 05/20/1998 | EP0843374A2 Voltage-controlled variable-passband filter and high-frequency circuit module incorporating same |
| 05/20/1998 | EP0843327A2 Metallized film capacitor |
| 04/28/1998 | US5745336 Capacitor for semiconductor integrated circuit |
| 04/16/1998 | DE19639882C1 Verfahren zur Herstellung eines Kondensators mit kleiner Eigeninduktivität A method for manufacturing a capacitor with small self inductance |
| 04/07/1998 | CA2105651C Antibacterial electret material |
| 04/02/1998 | WO1998013840A1 Method for manufacturing a low self-inductance capacitor |
| 02/24/1998 | US5721194 Tuneable microwave devices including fringe effect capacitor incorporating ferroelectric films |
| 01/14/1998 | CN1037041C Meta-oxides-semiconductor humidity-sensitive element and its producing method |
| 12/18/1997 | DE19623565A1 Azo:pigment dyes |
| 12/17/1997 | EP0813117A1 Electrophotographic toner and developer comprising an azo magenta pigment |
| 12/13/1997 | CA2207666A1 Electrophotographic toner and developer comprising a magenta azo pigment |
| 12/09/1997 | CA2081038C Electret transducer array and fabrication technique |
| 12/02/1997 | US5694134 Incorporating continuously variable phase delay transmission lines which provide for steering antenna beam |
| 10/30/1997 | WO1997040506A1 Variable capacitor |
| 10/16/1997 | WO1997038429A1 Floating plate capacitor with extremely wide band low impedance |
| 07/30/1997 | EP0632925A4 Crystallographically aligned ferroelectric films usable in memories and method of making. |
| 07/09/1997 | EP0575629B1 Antibacterial electret material |
| 06/10/1997 | US5638252 Electrical device and method utilizing a positive-temperature-coefficient ferroelectric capacitor |
| 04/29/1997 | US5625529 PZT thin films for ferroelectric capacitor and method for preparing the same |
| 04/09/1997 | EP0673311A4 C-axis perovskite thin films grown on silicon dioxide. |
| 02/26/1997 | EP0759628A1 Variable capacitor |
| 02/11/1997 | US5601909 Permanent electrode carrier using tourmaline |
| 02/04/1997 | US5600187 Electronically controllable capacitors using power MOSFET's |
| 12/31/1996 | US5589845 Tuneable electric antenna apparatus including ferroelectric material |
| 10/15/1996 | US5565717 Devices for manufacturing electrets, and electrets obtained thereby |
| 09/24/1996 | US5558809 Polymer electrets with improved charge stability |
| 09/17/1996 | US5556618 Synthetic organic polymer and stabilizer of hindered amine and phenol with metal ion zeolite |
| 09/10/1996 | US5554559 Method of manufacturing a semiconductor device having a capacitor with a ferroelectric, dielectric |
| 08/28/1996 | EP0729161A2 A process and apparatus for manufacturing an electret article |
| 08/28/1996 | CN1129963A Method of charging electret filter media |
| 07/16/1996 | US5536982 Bonded polymer and substrate having surface electric charge; miniature microphones, speakers |
| 06/05/1996 | EP0714463A1 Method of charging electret filter media |
| 04/10/1996 | EP0705527A1 Folded dielectric film element and method for manufacturing the same |
| 03/05/1996 | US5496507 Webs of thermoplastic microfibers and water drops for filtration |
| 02/21/1996 | EP0682673A4 Poromeric material having uniformly distributed electrets. |
| 02/21/1996 | CN1117196A Inorganic thin film humidity-sensitive element with high performance and its producing method |
| 01/23/1996 | US5486423 SiO2 electrets and process of making it |
| 01/23/1996 | US5486320 Method of depolarizing a ferroelectric material using electrical means and its application to obtain a ferroelectric material of reinforced dielectric strength |
| 01/04/1996 | DE19522473A1 Mfg. electret without applying electric field |
| 12/13/1995 | EP0672308A4 Tunable microwave devices incorporating high temperature superconducting and ferroelectric films. |
| 12/05/1995 | US5473683 Post assembly process for adjusting the gain of an electret microphone within a communications apparatus |
| 12/05/1995 | US5472935 Tuneable microwave devices incorporating high temperature superconducting and ferroelectric films |
| 11/28/1995 | US5471364 Electrode interface for high-dielectric-constant materials |
| 11/22/1995 | EP0682673A1 Poromeric material having uniformly distributed electrets |
| 10/11/1995 | EP0598729B1 Electret feature, method of producing it, and its use in an electro-acoustic transducer |
| 09/27/1995 | EP0673311A1 C-axis perovskite thin films grown on silicon dioxide |
| 09/20/1995 | EP0672308A1 Tunable microwave devices incorporating high temperature superconducting and ferroelectric films |
| 08/30/1995 | EP0444214B1 Film capacitor and its manufacturing method |
| 08/22/1995 | US5443030 Crystallizing method of ferroelectric film |
| 08/16/1995 | EP0369032B1 Electret material and method of producing the same |
| 08/02/1995 | CN1106160A Solid/gas double layer capacitor and electrical storage device |
| 07/25/1995 | US5436033 Method of manufacturing a polymer ultra thin film electret |
| 07/18/1995 | US5434742 Capacitor for semiconductor integrated circuit and method of manufacturing the same |
| 04/25/1995 | US5409766 Dust collectors |
| 03/23/1995 | WO1995005501A3 Method of charging electret filter media |
| 03/07/1995 | US5396095 Method of manufacturing a semiconductor device comprising a capacitor with a ferroelectric dielectric, and semiconductor device comprising such a capacitor |
| 02/23/1995 | WO1995005501A2 Method of charging electret filter media |
| 02/07/1995 | US5388163 Electret transducer array and fabrication technique |
| 01/25/1995 | CN1097774A Tolymer electrets with iltroved charge stability |
| 01/24/1995 | US5384337 Polymer binder for matrix of fibers |
| 01/11/1995 | EP0632925A1 Crystallographically aligned ferroelectric films usable in memories and method of making |
| 01/10/1995 | US5380410 Process for fabricating an optical device for generating a second harmonic optical beam |