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GB2197109B - Gb8721762.6roduct incorporating thermochromic liquid crystal material - Google Patents
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GB2197109B - Gb8721762.6roduct incorporating thermochromic liquid crystal material - Google Patents

Gb8721762.6roduct incorporating thermochromic liquid crystal material

Info

Publication number
GB2197109B
GB2197109B GB8721762A GB8721762A GB2197109B GB 2197109 B GB2197109 B GB 2197109B GB 8721762 A GB8721762 A GB 8721762A GB 8721762 A GB8721762 A GB 8721762A GB 2197109 B GB2197109 B GB 2197109B
Authority
GB
United Kingdom
Prior art keywords
liquid crystal
crystal material
thermochromic liquid
incorporating thermochromic
incorporating
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.)
Expired - Fee Related
Application number
GB8721762A
Other versions
GB8721762D0 (en
GB2197109A (en
Inventor
Paul Geoffrey Frost
Robert John Pugh
Douglas Hugh Dayment
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.)
Liquid Crystal Devices Ltd
Original Assignee
Liquid Crystal Devices 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 Liquid Crystal Devices Ltd filed Critical Liquid Crystal Devices Ltd
Publication of GB8721762D0 publication Critical patent/GB8721762D0/en
Publication of GB2197109A publication Critical patent/GB2197109A/en
Application granted granted Critical
Publication of GB2197109B publication Critical patent/GB2197109B/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
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/12—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance
    • G01K11/16—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance of organic materials
    • G01K11/165—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance of organic materials of organic liquid crystals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Liquid Crystal (AREA)
GB8721762A 1986-09-17 1987-09-16 Gb8721762.6roduct incorporating thermochromic liquid crystal material Expired - Fee Related GB2197109B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB868622337A GB8622337D0 (en) 1986-09-17 1986-09-17 Laminated product

Publications (3)

Publication Number Publication Date
GB8721762D0 GB8721762D0 (en) 1987-10-21
GB2197109A GB2197109A (en) 1988-05-11
GB2197109B true GB2197109B (en) 1990-09-12

Family

ID=10604296

Family Applications (2)

Application Number Title Priority Date Filing Date
GB868622337A Pending GB8622337D0 (en) 1986-09-17 1986-09-17 Laminated product
GB8721762A Expired - Fee Related GB2197109B (en) 1986-09-17 1987-09-16 Gb8721762.6roduct incorporating thermochromic liquid crystal material

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB868622337A Pending GB8622337D0 (en) 1986-09-17 1986-09-17 Laminated product

Country Status (1)

Country Link
GB (2) GB8622337D0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10239336B2 (en) 2013-05-13 2019-03-26 Fasver Method and device for the secure protection of an official document and official document thus protected

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPQ055999A0 (en) * 1999-05-25 1999-06-17 Silverbrook Research Pty Ltd A method and apparatus (npage01)
GB2247951B (en) * 1990-09-17 1994-11-09 Cowell Ltd W S Indicating devices in combination with plants
EP0495599A3 (en) * 1991-01-17 1992-11-25 Tesco Stores Limited Microwave oven test device and method of use
GB9101085D0 (en) * 1991-01-17 1991-02-27 Tesco Stores Ltd Microwave oven test device and method of use
KR100298104B1 (en) * 1992-12-22 2001-10-22 요트.게.아. 롤페즈 Thermal effect device with temperature indicator
GB2277482A (en) * 1993-04-30 1994-11-02 Ignacio Bautista Gimenez Data card with implements for manual tasks and other accessories.
FR2777099A1 (en) * 1998-04-01 1999-10-08 Hubert Calvados SUPPORT CARRYING ENCODING MEANS FOR AUTHENTICATION AS WELL AS DEVICE FOR REPLAYING SUCH A SUPPORT
ES2146164B1 (en) * 1998-04-28 2001-03-01 Promocrystal S L ADVERTISING SUPPORT WITH DOUBLE SCALE OF TEMPERATURE INDICATION.
ES2147513B1 (en) * 1998-06-26 2001-04-01 Casal Eulogio Carlos Nunez NEW TEMPERATURE INDICATOR SYSTEM, PROCEDURE FOR MANUFACTURING AND APPLICATIONS.
US6957768B1 (en) 1999-05-25 2005-10-25 Silverbrook Research Pty Ltd Computer system control via interface surface
NL1013024C2 (en) * 1999-09-10 2001-03-13 Gustaaf Conrad Maria Welling Temperature indicator with LCD display for liquids, especially bath water, has thermochromic indicator surface which can turn transparent
ES2246140B1 (en) * 2004-05-13 2006-11-16 Tecno Wine, S.L. INTELLIGENT VINICOLA AGAINST-LABEL.
FR2937279A1 (en) * 2008-10-22 2010-04-23 Arjowiggins SAFETY DOCUMENT HAVING THERMOCHROMIC ELEMENTS AND INFORMATION REGARDING TEMPERATURE
DE102009034236B4 (en) 2009-07-22 2023-11-16 Heidelberger Druckmaschinen Ag Method for calibrating color measuring devices

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1242206A (en) * 1969-01-31 1971-08-11 Ppg Industries Inc Method for detecting circuit discontinuities
GB1249432A (en) * 1969-04-14 1971-10-13 Ncr Co Visual display device
GB1306293A (en) * 1969-04-30 1973-02-07
GB1439161A (en) * 1972-06-15 1976-06-09 Parker Research Robert Digital thermometer and method of manufacture
GB1440292A (en) * 1973-07-02 1976-06-23 Ashley Butler Inc Thermometric element
EP0018424A1 (en) * 1979-05-02 1980-11-12 Carice International Products, Limited A method of measuring human body temperature and a liquid crystal temperature indicator suitable for measuring human body temperature
GB1597388A (en) * 1977-01-21 1981-09-09 Cellograf Simp Spa Multilayered structure incorporating a thermometer
US4524778A (en) * 1983-07-01 1985-06-25 American Thermometer Co., Inc. Skin temperature indicating and recording device
GB2165646A (en) * 1984-10-15 1986-04-16 Revlon Temperature indicators

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1242206A (en) * 1969-01-31 1971-08-11 Ppg Industries Inc Method for detecting circuit discontinuities
GB1249432A (en) * 1969-04-14 1971-10-13 Ncr Co Visual display device
GB1306293A (en) * 1969-04-30 1973-02-07
GB1439161A (en) * 1972-06-15 1976-06-09 Parker Research Robert Digital thermometer and method of manufacture
GB1440292A (en) * 1973-07-02 1976-06-23 Ashley Butler Inc Thermometric element
GB1597388A (en) * 1977-01-21 1981-09-09 Cellograf Simp Spa Multilayered structure incorporating a thermometer
EP0018424A1 (en) * 1979-05-02 1980-11-12 Carice International Products, Limited A method of measuring human body temperature and a liquid crystal temperature indicator suitable for measuring human body temperature
US4524778A (en) * 1983-07-01 1985-06-25 American Thermometer Co., Inc. Skin temperature indicating and recording device
GB2165646A (en) * 1984-10-15 1986-04-16 Revlon Temperature indicators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10239336B2 (en) 2013-05-13 2019-03-26 Fasver Method and device for the secure protection of an official document and official document thus protected

Also Published As

Publication number Publication date
GB8622337D0 (en) 1986-10-22
GB8721762D0 (en) 1987-10-21
GB2197109A (en) 1988-05-11

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Legal Events

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

Effective date: 19970916