DE111658C - - Google Patents

Info

Publication number
DE111658C
DE111658C DENDAT111658D DE111658DA DE111658C DE 111658 C DE111658 C DE 111658C DE NDAT111658 D DENDAT111658 D DE NDAT111658D DE 111658D A DE111658D A DE 111658DA DE 111658 C DE111658 C DE 111658C
Authority
DE
Germany
Prior art keywords
paper
visible
permanently
secrecy
resp
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
Application number
DENDAT111658D
Other languages
German (de)
Publication date
Application granted granted Critical
Publication of DE111658C publication Critical patent/DE111658C/de
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/50—Sympathetic, colour changing or similar inks

Description

BERLIN. GEDRUCKT IN DER REICHSDRUCKEREI,BERLIN. PRINTED IN THE REICHSDRUCKEREI,

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur Herstellung von Papier für Geheimmittheilungen , dadurch gekennzeichnet, dafs das Papier mit unsichtbaren oder sichtbaren Zeichen versehen wird, die durch Erwärmen dauernd sichtbar bezw. dauernd in ihrer Farbe verändert werden, zu dem Zwecke, eine unbefugte Kenntnifsnahme von mit sympathetischer Tinte geschriebenen Mittheilungen feststellen zu können.Process for the production of paper for secrecy healing, characterized in that, that the paper is provided with invisible or visible signs which are caused by heating permanently visible resp. are permanently changed in their color, for the purpose of an unauthorized recognition of with sympathetic To be able to identify messages written in ink.
DENDAT111658D Expired DE111658C (en)

Publications (1)

Publication Number Publication Date
DE111658C true DE111658C (en) 1900-01-01

Family

ID=381381

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT111658D Expired DE111658C (en)

Country Status (1)

Country Link
DE (1) DE111658C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5948500A (en) * 1994-03-03 1999-09-07 Milliken & Company Method for forming cushioned carpet tile with woven backing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5948500A (en) * 1994-03-03 1999-09-07 Milliken & Company Method for forming cushioned carpet tile with woven backing
US6203881B1 (en) 1994-03-03 2001-03-20 Milliken & Company Cushion backed carpet
US6468623B1 (en) 1994-03-03 2002-10-22 Milliken & Company Cushioned back carpet

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