FORMING ELECTROMAGNETIC COMMUNICATION CIRCUIT COMPONENTS USING DENSIFIED METAL POWDER
First Claim
1. An article comprising a conductive pattern on a substrate that forms an electrical component of an electromagnetic communication circuit, wherein the conductive pattern comprises a densified metal powder composition compressed into at least a portion of the substrate.
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Accused Products
Abstract
Manufacturing techniques are described for forming electrical components. For example, a layer of a metal powder composition is deposited onto at least a portion of a substrate. Pressure is applied to the metal powder composition by hydraulic press that has one or more projections in order to capture a pattern on the substrate. The metal powder composition compressed by the projections of the hydraulic press adhere to the substrate to form the captured pattern. The metal powder composition in regions not compressed by the projections of hydraulic press do not adhere to the substrate and may be removed. The metal powder composition may be compressed to form electrical components, such as antennae, capacitor plates, conduction pads and the like, for use in an electronic surveillance system (EAS), a radio frequency identification (RFID) system, or the like.
84 Citations
55 Claims
- 1. An article comprising a conductive pattern on a substrate that forms an electrical component of an electromagnetic communication circuit, wherein the conductive pattern comprises a densified metal powder composition compressed into at least a portion of the substrate.
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22. An article comprising:
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at least one loop that forms an antenna; and
at least one capacitor plate electrically coupled to the loop of the antenna, wherein at least one of the antenna or the capacitor plate is defined by a conductive pattern of densified metal powder composition on a substrate, and at least a portion of the metallized pattern is compressed into the substrate. - View Dependent Claims (23, 24, 25)
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26. A radio frequency identification system comprising:
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a storage area to store at least one item having an associated radio frequency identification tag;
an antenna proximate the storage area to produce an electromagnetic field; and
a radio frequency identification reader coupled to the antenna to power the antenna to communicate with the radio frequency identification tag, wherein at least a portion of the radio frequency identification tag includes at least one electrical component defined by a conductive pattern of densified metal powder composition on a substrate. - View Dependent Claims (27, 28, 29)
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30. A method comprising:
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depositing on a substrate a metal powder composition in a pattern to form at least one electrical component for an electromagnetic communication article; and
densifying the metal powder composition to obtain the conductive pattern. - View Dependent Claims (31, 32, 33, 34, 35)
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- 36. An apparatus comprising an electromagnetic communication circuit formed at least in part from a conductive pattern on a substrate, wherein the conductive pattern consists essentially of a densified metal powder composition, and wherein the substrate is selected from the group consisting of paper and materials that are at least about 10% compressible
- 40. An article comprising a conductive pattern on a substrate, wherein the conductive pattern forms all or part of one or more electrical components, wherein the conductive pattern consists essentially of a densified metal powder composition, and wherein the substrate is selected from the group consisting of paper and materials that are at least about 10% compressible.
- 46. An article comprising a conductive pattern on a substrate, wherein the conductive pattern forms all or part of one or more electrical components, wherein the conductive pattern consists essentially of a densified metal powder composition, wherein the substrate is selected from the group consisting of paper and materials that are at least about 10% compressible, and wherein the article further comprises at least one component that is not a conductive pattern consisting essentially of a densified metal powder.
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53. A method comprising:
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depositing on a substrate which is either paper or a compressible material a metal powder composition in a pattern; and
densifying the metal powder composition to obtain a conductive pattern forming at least one electrical component of an article. - View Dependent Claims (54, 55)
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Specification