Patents
Sitemap › H01 - Basic electric elements › H01G - Capacitors; Capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices of the electrolytic type › H01G 7 - Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
Patents for H01G 7 - Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture (2,230)
08/1985
08/01/1985WO1985003381A1 Method and apparatus for forming hermetically sealed electrical feedthrough conductors
07/1985
07/30/1985US4532016 Capacitive hygrometer and its production process
07/24/1985EP0149322A2 Method and apparatus for reducing varactor noise
07/10/1985EP0147432A1 Electrode for electrostatic transducer and methods of manufacture
07/02/1985US4527218 Stable positively charged Teflon electrets
06/1985
06/25/1985US4525766 Method and apparatus for forming hermetically sealed electrical feedthrough conductors
06/04/1985US4521322 Process for manufacturing a piezo- or pyroelectric polymer material comprising a cross-linking step
05/1985
05/15/1985EP0141674A2 Electret process and products
05/15/1985EP0141150A2 Process for the production of permanently electrically charged sheet material
05/14/1985US4517496 Lighting apparatus for a discharge lamp
05/07/1985CA1186569A1 Conductive coatings for electret devices
04/1985
04/23/1985US4513348 Low parasitic capacitance pressure transducer and etch stop method
04/23/1985US4513049 Electret article
04/23/1985US4512941 Polarizing of piezoelectric material
04/23/1985US4512940 Method and apparatus for the production of electret material
04/16/1985CA1185454A1 Silicon-glass-silicon capacitive pressure transducer
03/1985
03/28/1985WO1985001385A1 Particulate-modified electret fibers
02/1985
02/26/1985US4502096 Low-inductance capacitor
02/19/1985US4500940 Capacitive humidity sensor and method for the manufacture of same
02/19/1985US4500397 Producing electric dipoles by applying temperature gradients to pyroelectric binders
02/18/1985EP0035536A4 Method of manufactoring adjustable thick film capacitors.
02/12/1985US4499518 Process for the production of an electronic component enclosed in a housing and apparatus for carrying out the process
02/05/1985US4497892 Method for forming multiple images on a photographic film
01/1985
01/09/1985EP0130386A1 Plastic foil-wound capacitor
12/1984
12/25/1984US4490772 Voltage and mechanically variable trimmer capacitor
12/06/1984WO1984004865A1 Electrode for electrostatic transducer and methods of manufacture
12/04/1984US4486365 Process and apparatus for the preparation of electret filaments, textile fibers and similar articles
11/1984
11/20/1984US4484251 Current restriction element responsive to applied voltage
11/13/1984US4482882 Moisture sensor with valve metal composition electrodes
11/06/1984US4481558 Wound foil type film capacitor
10/1984
10/31/1984EP0122988A1 Electret article
10/23/1984US4477953 Wound capacitor end connections and method of obtaining same
10/23/1984CA1176597A1 Stable positively charged electrets
10/17/1984EP0121845A1 Electromechanical transducer
09/1984
09/26/1984EP0119706A2 Improved polarizing of material
09/25/1984US4473863 Apparatus for and method of making an electret tape
09/12/1984EP0118216A1 Method and apparatus for manufacturing an electret filter medium
09/04/1984US4470096 Multilayer, fully-trimmable, film-type capacitor and method of adjustment
08/1984
08/16/1984WO1984003193A1 Method and apparatus for manufacturing an electret filter medium
08/02/1984WO1984002424A3 Method and apparatus for the production of electret materials
07/1984
07/10/1984US4459634 Process for removing unstable charges
07/03/1984US4458292 Multiple capacitor transducer
07/03/1984US4458161 Electret device
06/1984
06/26/1984US4456648 Particulate-modified electret fibers
06/26/1984CA1169981A1 Corona discharge poling process
06/26/1984CA1169918A1 Apparatus for the rapid continuous corona poling of polymeric films
06/21/1984WO1984002424A2 Method and apparatus for the production of electret materials
06/19/1984US4455494 Electret device
05/1984
05/22/1984US4450502 Barrier of silver sulfide in the fired connecting termination of glass frit and silver; solderable; nonleaching
05/09/1984EP0107993A2 Method of making a piezo or pyroelectric material including a reticulation step
05/08/1984US4447549 Non-linear dielectric element
05/01/1984CA1166767A1 Process for manufacturing electromechanical transducers using at least one polymer film and a device for implementing said process
04/1984
04/24/1984CA1166336A1 Functional electric devices
04/17/1984US4443711 Electret device
04/03/1984US4441038 Electret device
04/03/1984US4440591 Method of manufacturing high potential electrets
03/1984
03/21/1984EP0103020A1 Voltage sensitive current limiting element
03/20/1984US4438480 Capacitive hygrometer
02/1984
02/28/1984US4434452 Metallized film capacitor
02/21/1984US4433319 Thin film of tantalum oxide with two electrodes
01/1984
01/17/1984US4426546 Functional layer and pair of copper, or copper alloy, electrodes
12/1983
12/20/1983US4422129 Humidity sensor
12/06/1983CA1158367A1 Fabrication of non-conductive charged sensing probe unit
11/1983
11/08/1983CA1156731A1 Thick film capacitor adjustable by low energy laser beam and method of manufacture
11/02/1983EP0092912A2 Multilayer ceramic dielectric capacitors
10/1983
10/05/1983EP0090062A1 Process and apparatus for the manufacture of electret filaments, fibres or the like
10/04/1983US4407887 Applying dielectric polymer film and electric field
10/04/1983US4407852 Volumetric space charge
09/1983
09/20/1983US4405970 Silicon-glass-silicon capacitive pressure transducer
09/13/1983US4404029 Non-linear polycrystalline barium titanate-type dielectric element
09/13/1983US4403382 Process for manufacturing electromechanical transducers using at least one polymer film
09/01/1983WO1983003028A1 Voltage sensitive current limiting element
07/1983
07/26/1983CA1150816A1 Method and apparatus for implanting a charge in an electret foil
07/20/1983EP0083667A1 Method of manufacturing a pyroelectric unit
07/12/1983US4393434 Capacitance humidity sensor
07/12/1983US4392970 Electromechanical transducers
07/06/1983EP0082934A2 Moisture sensor and process for its manufacture
07/05/1983US4392178 Apparatus for the rapid continuous corona poling of polymeric films
06/1983
06/28/1983US4390800 Electret device
06/07/1983CA1147521A1 Doubly oriented film of polyvinylidene fluoride
05/1983
05/24/1983CA1146908A1 Electrets
05/24/1983CA1146907A1 Electrets
04/1983
04/28/1983WO1983001536A1 Silicon-glass-silicon capacitive pressure transducer
04/13/1983EP0076693A2 Wound foil type capacitors
03/1983
03/09/1983EP0073252A1 Device for lighting discharge lamp
03/08/1983US4375718 Method of making fibrous electrets
03/08/1983CA1142343A1 Non-linear dielectric element
02/1983
02/08/1983CA1141020A1 Electrets from plasma polymerized material
02/03/1983WO1983000404A1 Method of manufacturing a pyroelectric unit
01/1983
01/25/1983US4370182 Charging dielectric layers to form electrets, sealing
12/1982
12/21/1982US4365283 Corona discharge poling process
12/15/1982EP0066878A2 Stable positively charged electrets
12/09/1982WO1982004346A1 Stable positively charged electrets
10/1982
10/26/1982US4356049 Lamination of conductor and dielectric polymer film, pressure deformation with jig
09/1982
09/22/1982EP0060687A2 Method of making fibrous electrets
09/16/1982WO1982003149A1 Device for lighting discharge lamp
09/07/1982US4348711 Method and apparatus for implanting a charge in an electret foil
08/1982
08/17/1982US4344810 Apparatus for making tape transducer
07/1982
07/06/1982US4338506 Method of trimming thick film capacitor
06/1982
06/30/1982EP0054813A2 A capacitance humidity sensor and a method for preparation thereof
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