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US4414722A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for the manufacture of electrical components especially layer capacitors

Assignee: Siemens AG
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Filing: 1981-06-04
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Granted: 1983-11-15
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Expires: 2001-06-04
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Abstract

Abstract Manufacture of electrical components, particularly layer capacitors with dielectric layers of glow polymerisate, in which strip-shaped carriers are separated from an insulating tape. First, contact layers of a metal which does not soften during later contacting are applied to two opposite sides. Thereupon a metal layer and, optionally, further layers are applied to at least one side which is still free of metal. The metal layer is applied so that it overlaps at least one of the contact layers and forms with the latter an electrically conducting connection. The method is characterized by the features that the carriers are separated from an unmetallized insulating tape; that the cutting surfaces of the carriers are coated with the contact layers; and that then the metallization of the components is applied to one of the smooth surfaces which have not yet been metallized.

Inventors

  • 👤 Ulrich Wehnelt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 09:41
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/228; H01G4/232; H01G4/30; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49101; Y10T29/49117; Y10T29/49169

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 187 words
Method for the manufacture of layer capacitors with dielectric layers of glow polymerisate, which comprises sawing apart an unmetallized electrically insulating tape having smooth surfaces to form a plurality of separate strip-shaped carriers with smooth surfaces and relatively rough separating surfaces formed by the sawing operation, placing a plurality of the carriers against each other in such manner that their separating surfaces formed by the sawing are exposed, offsetting the carriers relative to each other perpendicularly to the separating surfaces to expose edges of the smooth surfaces of the carriers maintaining the plurality of carriers in the positions achieved by said placing and offsetting operations, while said plurality of carriers are so maintained, coating the two opposite surfaces of the carriers resulting from said separation from the tape and also the exposed edges of the carriers by applying contact layers of a metal which will not soften during later contacting of the metal, and subsequently metallizing a smooth unmetallized surface of each carrier by applying a metal layer thereto which overlaps at least one of the contact layers and forms with the latter an electrically conducting connection.
Claim 2
Dependent Claim 187 words
Method for the manufacture of layer capacitors with dielectric layers of glow polymerisate, which comprises sawing apart an unmetallized electrically insulating tape having smooth surfaces to form a plurality of separate strip-shaped carriers with smooth surfaces and relatively rough separating surfaces formed by the sawing operation, placing a plurality of the carriers against each other in such manner that their separating surfaces formed by the sawing are exposed, offsetting the carriers relative to each other perpendicularly to the separating surfaces to expose edges of the smooth surfaces of the carriers maintaining the plurality of carriers in the positions achieved by said placing and offsetting operations, while said plurality of carriers are so maintained, coating the two opposite surfaces of the carriers resulting from said separation from the tape and also the exposed edges of the carriers by applying contact layers of a metal which will not soften during later contacting of the metal, and subsequently metallizing a smooth unmetallized surface of each carrier by applying a metal layer thereto which overlaps at least one of the contact layers and forms with the latter an electrically conducting connection.
Claim 3
Dependent Claim 180 words
Method for the manufacture of layer capacitors with dielectric layers of glow polymerisate, which comprises sawing apart an unmetallized electrically insulating tape having smooth surfaces to form a plurality of separate strip-shaped carriers with smooth surfaces and relatively rough separating surfaces formed by the sawing operation, placing a plurality of the carriers against each other in such manner that their separating surfaces formed by the sawing are exposed, exposing at least one edge of each smooth surface by a bevelling or rounding operation, maintaining the plurality of carriers in the position achieved by said placing operation, while said carriers are so maintained coating the two opposite surfaces of the carriers resulting from said separation from the tape and also the exposed edges of the smooth surfaces of the carriers by applying contact layers of a metal which will not soften during later contacting of the metal, and subsequently metallizing a smooth unmetallized surface of each carrier by applying a metal layer thereto which overlaps at least one of the contact layers and forms with the latter an electrically conducting connection.
Claim 4
Dependent Claim 180 words
Method for the manufacture of layer capacitors with dielectric layers of glow polymerisate, which comprises sawing apart an unmetallized electrically insulating tape having smooth surfaces to form a plurality of separate strip-shaped carriers with smooth surfaces and relatively rough separating surfaces formed by the sawing operation, placing a plurality of the carriers against each other in such manner that their separating surfaces formed by the sawing are exposed, exposing at least one edge of each smooth surface by a bevelling or rounding operation, maintaining the plurality of carriers in the position achieved by said placing operation, while said carriers are so maintained coating the two opposite surfaces of the carriers resulting from said separation from the tape and also the exposed edges of the smooth surfaces of the carriers by applying contact layers of a metal which will not soften during later contacting of the metal, and subsequently metallizing a smooth unmetallized surface of each carrier by applying a metal layer thereto which overlaps at least one of the contact layers and forms with the latter an electrically conducting connection.

References Cited (Backward Citations)

US3330696A Cited
US1781877A Cited
US3252830A Cited
US3360398A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-11-14 1987-05-16 1987-11-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-11-14 1991-05-16 1991-11-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-11-14 1995-05-16 1995-11-15 $7700.00 Window Closed / Lapsed

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