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:
Dec. 13, 2005
Filed:
Nov. 08, 2000
Steven T. Adamy, Princeton, NJ (US);
Francis R. Cala, Highland Park, NJ (US);
Steven T. Adamy, Princeton, NJ (US);
Francis R. Cala, Highland Park, NJ (US);
Church & Dwight Co., Inc., Princeton, NJ (US);
Abstract
A timing device for visually determining the passage of a preselected period of time including a tube () having opposed ends with at least one of the opposed ends having a reservoir () for storing a reactant or an indicator, a transport system () extending from the reservoir to the other of the opposed ends of the tube () for transporting at least one of the reactant or the indicator until they contact each other, a reactant, and an indicator which when in contact with the reactant via the transport means () emits an observable change in property wherein the minimum length of the period of time corresponds to the time it takes for the reactant and indicator to contact each other. Thc tube () has a shape which undergoes at least two material changes of direction exceeding 90° and up to 180° from one of the opposed ends to the other.