US Patent No: 5,170,544

Number of patents in Portfolio can not be more than 2000

Method of producing electrical resonant circuits, specifically resonance labels

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Abstract

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In order to produce resonance labels a coil having the shape of a spiral and a first capacitor surface located adjacent the innermost winding of the spiral and, furthermore, a supplementary surface adjacent the outer end of the spiral are produced at one side only of a supporting foil by an etching method from an aluminum foil arranged on the supporting foil. An aluminum foil strip is sealed onto the other side of the supporting foil at a superimposed position relative to the first capacitor surface, a few windings of the spiral and the supplementary surface to form the second capacitor surface. After establishing an electrical connection between this strip and the supplementary surface at the other side an electrical resonant circuit is produced. Due to the sealed on aluminum foil strip the etching procedure is reduced to only one side with the advantage that considerably less poisonous etching sludge is thus produced.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
KOBE PROPERTIES LIMITEDISLE OF MAN7

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Pichl, Fritz Kilchberg, CH 6 137

Cited Art Landscape

Patent Info (Count) # Cites Year
 
I. D. ENGINEERING, INC., I. D. (1)
4,369,557 Process for fabricating resonant tag circuit constructions 136 1980

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
AMEI TECHNOLOGIES, INC. (2)
5,351,389 Method for fabricating a contoured triangular transducer system 32 1992
5,401,233 Contoured triangular transducer system for PEMF therapy 24 1994
 
Kabushiki Kaisha Miyake (2)
6,214,444 Circuit-like metallic foil sheet and the like and processing for producing them 24 1997
7,256,738 Resonant circuits 6 2003
 
CHECKPOINT SYSTEMS, INC. (1)
6,988,666 Security tag and process for making same 17 2002