AU8801691A - Multilayer film indicator for determining the integrity or authenticity of an item and process for using same - Google Patents

Multilayer film indicator for determining the integrity or authenticity of an item and process for using same

Info

Publication number
AU8801691A
AU8801691A AU88016/91A AU8801691A AU8801691A AU 8801691 A AU8801691 A AU 8801691A AU 88016/91 A AU88016/91 A AU 88016/91A AU 8801691 A AU8801691 A AU 8801691A AU 8801691 A AU8801691 A AU 8801691A
Authority
AU
Australia
Prior art keywords
authenticity
integrity
item
determining
same
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
AU88016/91A
Other versions
AU644240B2 (en
Inventor
Walter J. Schrenk
John A. Wheatley
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Priority to AU88016/91A priority Critical patent/AU644240B2/en
Publication of AU8801691A publication Critical patent/AU8801691A/en
Application granted granted Critical
Publication of AU644240B2 publication Critical patent/AU644240B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

AU88016/91A 1991-11-20 1991-11-20 Multilayer film indicator for determining the integrity or authenticity of an item and process for using same Ceased AU644240B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU88016/91A AU644240B2 (en) 1991-11-20 1991-11-20 Multilayer film indicator for determining the integrity or authenticity of an item and process for using same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU88016/91A AU644240B2 (en) 1991-11-20 1991-11-20 Multilayer film indicator for determining the integrity or authenticity of an item and process for using same

Publications (2)

Publication Number Publication Date
AU8801691A true AU8801691A (en) 1993-06-17
AU644240B2 AU644240B2 (en) 1993-12-02

Family

ID=3763269

Family Applications (1)

Application Number Title Priority Date Filing Date
AU88016/91A Ceased AU644240B2 (en) 1991-11-20 1991-11-20 Multilayer film indicator for determining the integrity or authenticity of an item and process for using same

Country Status (1)

Country Link
AU (1) AU644240B2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858977A (en) * 1972-01-18 1975-01-07 Canadian Patents Dev Optical interference authenticating means
US4417784A (en) * 1981-02-19 1983-11-29 Rca Corporation Multiple image encoding using surface relief structures as authenticating device for sheet-material authenticated item
US4469725A (en) * 1982-09-14 1984-09-04 Fis Organisation Ag Identification card

Also Published As

Publication number Publication date
AU644240B2 (en) 1993-12-02

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired