Abstract

A time-temperature integrating (TTi) indicator label comprises an initiator reservoir and a target reservoir, said initiator reservoir containing a pH modification system and said target reservoir comprising a pH responsive indicator. The pH responsive indicator may be photo- initiated. There is also provided a time-temperature indicator label comprising first and second reservoirs separated by a hydrogel valve, said valve allowing passage of an acid from said first reservoir to said second reservoir when the hydrogel valve is activated.

IPC Classes  ?

• G01K 3/04 - Thermometers giving results other than momentary value of temperature giving mean valuesThermometers giving results other than momentary value of temperature giving integrated values in respect of time
• G04F 13/04 - Apparatus for measuring unknown time intervals by means not provided for in groups using electrochemical means

Abstract

A time-temperature integrating (TTi) indicator label comprises an initiator reservoir and a target reservoir, said initiator reservoir containing a pH modification system and said target reservoir comprising a pH responsive indicator. The pH responsive indicator may be photo- initiated. There is also provided a time-temperature indicator label comprising first and second reservoirs separated by a hydrogel valve, said valve allowing passage of an acid from said first reservoir to said second reservoir when the hydrogel valve is activated.

IPC Classes  ?

• G01K 3/04 - Thermometers giving results other than momentary value of temperature giving mean valuesThermometers giving results other than momentary value of temperature giving integrated values in respect of time
• G04F 13/04 - Apparatus for measuring unknown time intervals by means not provided for in groups using electrochemical means

Abstract

A time indicator device comprised of first and second interconnected reservoirs containing first and second liquids respectively. A first barrier is provided between said first and second liquids to prevent said liquids mixing. Said first barrier is connected via a conduit to a third reservoir containing a third liquid which is adapted to pass along said conduit over a first predetermined time period and to effect removal of said first barrier upon contact to facilitate mixing of said first and second liquid and generation of a liquid mixture within the second reservoir of different color to the second liquid prior to mixing and thereby provide an indication of when said first predetermined time period has elapsed.

IPC Classes  ?

• G04F 1/00 - Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers

Goods & Services

Colorants, inks, pigments, dyes, marking and indicator fluids for indicating time or elapsed time, temperature or temperature change. Indicator labels for indicating time and/or temperature and/or pH levels; temperature and temperature change indication strips; time and elapsed time indicator strips and labels; pH indicator strips or labels; labels for indicating the age or quality of foods, pharmaceutical or cosmetic products or other consumable or perishable products. Labels and stickers for indicating time expiration, temperature or temperature change, or pH levels.

Abstract

A time indicator device comprised of first and second interconnected reservoirs containing first and second liquids respectively. A first barrier is provided between said first and second liquids to prevent said liquids mixing. Said first barrier is connected via a conduit to a third reservoir containing a third liquid which is adapted to pass along said conduit over a first predetermined time period and to effect removal of said first barrier upon contact to facilitate mixing of said first and second liquids and generation of a liquid mixture within the second reservoir of different colour to the second liquid prior to mixing and thereby provide an indication of when said first predetermined time period has elapsed.

IPC Classes  ?

• G04F 1/00 - Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers
• G01K 3/04 - Thermometers giving results other than momentary value of temperature giving mean valuesThermometers giving results other than momentary value of temperature giving integrated values in respect of time