06916116 is referenced by 31 patents and cites 86 patents.

Time or time-temperature indicating articles are described comprising a housing enclosing: (a) a first fluid reservoir at least partially filled with a first fluid; (b) a substrate comprising a plurality of channels; (c) a second fluid reservoir in fluid communication with at least one channel of the substrate; and (d) a barrier located between the first fluid reservoir and the second fluid reservoir. The article can be manipulated at a desired point in time by opening the barrier to allow at least a portion of the fluid to flow from the first reservoir to the second reservoir and to contact at least one channel of the substrate. The article is designed to provide an indication of the progress of the fluid as it moves through the channels of the substrate.

Title
Time or time-temperature indicating articles
Application Number
10/405446
Publication Number
6916116 (B2)
Application Date
April 2, 2003
Publication Date
July 12, 2005
Inventor
G Marco Bommarito
Stillwater
MN, US
Timothy J Diekmann
Maplewood
MN, US
Agent
Lisa P Fulton
Assignee
3M Innovative Properties Company
MN, US
IPC
G01K 001/00
G01K 003/00
View Original Source