GB2266954A - Marking element - Google Patents

Marking element

Info

Publication number
GB2266954A
GB2266954A GB9310864A GB9310864A GB2266954A GB 2266954 A GB2266954 A GB 2266954A GB 9310864 A GB9310864 A GB 9310864A GB 9310864 A GB9310864 A GB 9310864A GB 2266954 A GB2266954 A GB 2266954A
Authority
GB
United Kingdom
Prior art keywords
marking element
barrier layer
determined temperature
punctured
exceeded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB9310864A
Other versions
GB9310864D0 (en
GB2266954B (en
Inventor
Terence Colley
Stephen Minter
John Carnie
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Food Guardian Ltd
Original Assignee
Food Guardian Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Food Guardian Ltd filed Critical Food Guardian Ltd
Publication of GB9310864D0 publication Critical patent/GB9310864D0/en
Publication of GB2266954A publication Critical patent/GB2266954A/en
Application granted granted Critical
Publication of GB2266954B publication Critical patent/GB2266954B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K3/00—Thermometers giving results other than momentary value of temperature
    • G01K3/02—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values
    • G01K3/04—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values in respect of time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Surgical Instruments (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)

Abstract

A marking element for indicating whether a pre-defined temperature condition has been maintained. The marking element (1) comprises a first material (8) capable of flowing above a pre-determined temperature separated from a second absorbent material (6) by a barrier layer (7). The first and second materials are such that when the barrier layer (7) is punctured and the pre-determined temperature is exceeded the first material (8) flows along the second material (6) to produce a detectable change.
GB9310864A 1990-10-26 1993-05-26 Marking element Expired - Fee Related GB2266954B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909023393A GB9023393D0 (en) 1990-10-26 1990-10-26 Marking element
PCT/GB1991/001879 WO1992008113A1 (en) 1990-10-26 1991-10-28 Marking element

Publications (3)

Publication Number Publication Date
GB9310864D0 GB9310864D0 (en) 1993-07-28
GB2266954A true GB2266954A (en) 1993-11-17
GB2266954B GB2266954B (en) 1995-01-18

Family

ID=10684444

Family Applications (2)

Application Number Title Priority Date Filing Date
GB909023393A Pending GB9023393D0 (en) 1989-12-14 1990-10-26 Marking element
GB9310864A Expired - Fee Related GB2266954B (en) 1990-10-26 1993-05-26 Marking element

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB909023393A Pending GB9023393D0 (en) 1989-12-14 1990-10-26 Marking element

Country Status (6)

Country Link
JP (1) JP3056786B2 (en)
AU (1) AU660154B2 (en)
CA (1) CA2099272C (en)
GB (2) GB9023393D0 (en)
WO (1) WO1992008113A1 (en)
ZA (1) ZA918573B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1228366B1 (en) 1999-10-11 2015-04-15 Keep-It Technologies AS Full history time-temperature indicator system
PL2412579T3 (en) * 2010-07-26 2014-07-31 Johnson Controls Gmbh Vehicle interior section with an indicator
ES2472721B1 (en) * 2014-04-15 2015-01-21 Cartonajes Santorromán, S.A. LABEL FOR TEMPERATURE AND TIME CONTROL, PROCEDURE FOR MANUFACTURE OF SUCH LABEL AND MACHINE FOR PRACTICE OF SUCH PROCEDURE

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055759A (en) * 1959-04-13 1962-09-25 John C Busby Temperature indicators
US3414415A (en) * 1965-10-22 1968-12-03 Robert L. Broad Jr. Thaw indicator
US3420205A (en) * 1966-03-23 1969-01-07 Miles Lab Indicating device
US3479877A (en) * 1968-08-28 1969-11-25 Minnesota Mining & Mfg Time-temperature indicator
DE2130926A1 (en) * 1971-06-22 1972-12-28 Baumgartner Papiers Sa Control indicator for frozen products
US3751382A (en) * 1969-03-13 1973-08-07 Food Control Enzymatic indicator and method of making it
US4148272A (en) * 1978-04-10 1979-04-10 Paula Mann Thaw duration detector
GB2064768A (en) * 1979-12-04 1981-06-17 Marcialis S Device indicating excess temperature
EP0092034A2 (en) * 1982-03-25 1983-10-26 List, Paul Heinz, Prof.Dr.rer.nat. Indicator device for a time-temperature charge
GB2151784A (en) * 1983-12-23 1985-07-24 Draegerwerk Ag Temperature indication
US4647224A (en) * 1981-06-09 1987-03-03 Karl Holm Disposable maximum reading thermometer and a method for the production thereof
WO1991009287A1 (en) * 1989-12-14 1991-06-27 Food Guardian Limited Time-temperature indicator

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055759A (en) * 1959-04-13 1962-09-25 John C Busby Temperature indicators
US3414415A (en) * 1965-10-22 1968-12-03 Robert L. Broad Jr. Thaw indicator
US3420205A (en) * 1966-03-23 1969-01-07 Miles Lab Indicating device
US3479877A (en) * 1968-08-28 1969-11-25 Minnesota Mining & Mfg Time-temperature indicator
US3751382A (en) * 1969-03-13 1973-08-07 Food Control Enzymatic indicator and method of making it
DE2130926A1 (en) * 1971-06-22 1972-12-28 Baumgartner Papiers Sa Control indicator for frozen products
US4148272A (en) * 1978-04-10 1979-04-10 Paula Mann Thaw duration detector
GB2064768A (en) * 1979-12-04 1981-06-17 Marcialis S Device indicating excess temperature
US4647224A (en) * 1981-06-09 1987-03-03 Karl Holm Disposable maximum reading thermometer and a method for the production thereof
EP0092034A2 (en) * 1982-03-25 1983-10-26 List, Paul Heinz, Prof.Dr.rer.nat. Indicator device for a time-temperature charge
GB2151784A (en) * 1983-12-23 1985-07-24 Draegerwerk Ag Temperature indication
WO1991009287A1 (en) * 1989-12-14 1991-06-27 Food Guardian Limited Time-temperature indicator

Also Published As

Publication number Publication date
AU660154B2 (en) 1995-06-15
GB9310864D0 (en) 1993-07-28
GB9023393D0 (en) 1990-12-05
AU8750891A (en) 1992-05-26
CA2099272C (en) 2002-09-17
WO1992008113A1 (en) 1992-05-14
CA2099272A1 (en) 1992-04-27
GB2266954B (en) 1995-01-18
JP3056786B2 (en) 2000-06-26
ZA918573B (en) 1992-08-26
JPH06504117A (en) 1994-05-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20061028