The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2007
Filed:
Apr. 08, 2003
Edwin James Harris, Deerfield, IL (US);
Scott Davidson, Woodstock, IL (US);
David Perry, Village of Lakewood, IL (US);
Steven J. Whitney, Lake Zurich, IL (US);
Edwin James Harris, Deerfield, IL (US);
Scott Davidson, Woodstock, IL (US);
David Perry, Village of Lakewood, IL (US);
Steven J. Whitney, Lake Zurich, IL (US);
Littelfuse, Inc., Des Plaines, IL (US);
Abstract
The present invention provides overvoltage circuit protection. Specifically, the present invention provides a voltage variable material ('VVM') that includes an insulative binder that is formulated to intrinsically adhere to conductive and nonconductive surfaces. The binder and thus the VVM is self-curable and may be applied to an application in the form of an ink, which dries in a final form for use. The binder eliminates the need to place the VVM in a separate device or for separate printed circuit board pads on which to electrically connect the VVM. The binder and thus the VVM can be directly applied to many different types of substrates, such as a rigid (FR-4) laminate, a polyimide or a polymer. The VVM can also be directly applied to different types of substrates that are placed inside a device.