1
Jan Vandebult: Process for fabricating resonant tag circuit constructions. Schwartz Jeffery Schwaab Mack Blumenthal & Koch, January 25, 1983: US04369557 (108 worldwide citation)

An insulative substrate web having a conductive surface on a first face is printed and etched to provide a repetitive conductive circuit pattern. In one form of the invention, the pattern defines a first conductive area serving as a first capacitor plate, and an inductor connected thereto; conductiv ...


2
Merwin F Hoover, Ann B Salamone, Jan Vandebult: Process for producing product having patterned metal layer. Polyonics Corporation, Paul J Cook, May 19, 1987: US04666735 (75 worldwide citation)

A multilayered composite product useful as an electrical circuit is produced by coating a base with a photoimagable resin free of catalyst or catalyst activator for electroless metal deposition. The resin is patterned by exposure to a desired light, through a mask followed by development. The patter ...


3
Merwin F Hoover, Phillip B Reilly, Ann B Salamone, Jan Vandebult: Continuous process for fabricating metallic patterns on a thin film substrate. Polyonics Corporation, Paul J Cook, December 24, 1985: US04560445 (75 worldwide citation)

A process is provided for fabricating metallic patterns such as resonant RF-tuned circuits on a polyolefin film such as polyethylene or polypropylene film. The film is processed under conditions such as to maintain its mechanical integrity by being passed through a solvent plasticizing bath, an etch ...


4
Jan Vandebult: Loop antenna for security systems. I D Engineering, Schwartz Jeffery Schwaab Mack Blumenthal & Koch, February 8, 1983: US04373163 (57 worldwide citation)

Disclosed is a loop antenna for the propagation of electromagnetic radiation with minimal electrostatic radiation for use in security systems. At least a single loop of conductor forms the radiating surface of the antenna. However, the loop is disposed in a tubular electrostatic shield which serves ...


5
Henry J Martens, Jan Vandebult: Anti-theft fastening device and tool for releasing same. I D Engineering, Beall & Jeffery, August 17, 1976: US03974581 (55 worldwide citation)

A fastening device for securing articles together, the device including releasably connected male and female components. The male component comprises a pin and the female component comprises a retaining insert positioned in a housing for releasably clamping the pin. When joined, the pin can not be s ...


6
Merwin F Hoover, Ann B Salamone, Jan Vandebult: Process for producing composite product having patterned metal layer. Polyonics Corporation, Paul J Cook, November 26, 1985: US04555414 (54 worldwide citation)

A multilayered composite product including a base, a patterned cured resin bonded to the base and an applied metal layer selectively bonded to the patterned cured resin. The product is useful as an electrical circuit.


7
Henry J Martens, Jan Vandebult: Anti-theft fastening device and tool for releasing same. I D Engineering, Beall & Jeffery, April 6, 1976: US03947930 (49 worldwide citation)

A fastening device for securing articles together, the device including releasably connected male and female components. The male component comprises a pin and the female component comprises a retaining insert positioned in a housing for releasably clamping the pin. When joined, the pin can not be s ...


8
Henry J Martens, Jan Vandebult: Anti-theft locking device. I D Engineering, Schwartz Jeffery Schwaab Mack Blumenthal & Koch, September 9, 1980: US04221025 (42 worldwide citation)

A locking device which includes a housing, a spring biased insert, arcuately spaced retaining balls, and cup means which is securely mounted in the housing and retains the balls and the lower end of the insert. The tapered side walls of the cup means provide a cam surface upwardly along which the ba ...


9
Jan Vandebult: Secure release apparatus for anti-theft fastening device. I D Engineering, Schwartz Jeffery Schwaab Mack Blumenthal & Evans, July 9, 1985: US04527310 (40 worldwide citation)

The secure release apparatus is used with an anti-theft device having a member which is movable in response to an applied magnetic field. The secure release apparatus comprises a cover plate with an access opening and a permanent magnet structure which produces a concentrated magnetic field sufficie ...


10
Phillip B Reilly, Jan Vandebult: Resonant tag circuits useful in electronic security systems. Polyonics Corporation, Paul J Cook, April 15, 1986: US04583099 (40 worldwide citation)

A resonant tag circuit is provided which is useful in conjunction with an electronic security system for preventing theft of articles from a protected area. The tag circuit comprises an electrically insulating substrate having a spiral conductive path on each surface of the substrate. The spiral con ...