FR439426A - Perfectionnement à la fabrication du papier - Google Patents

Perfectionnement à la fabrication du papier

Info

Publication number
FR439426A
FR439426A FR439426A FR439426DA FR439426A FR 439426 A FR439426 A FR 439426A FR 439426 A FR439426 A FR 439426A FR 439426D A FR439426D A FR 439426DA FR 439426 A FR439426 A FR 439426A
Authority
FR
France
Prior art keywords
papermaking
further training
training
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
FR439426A
Other languages
English (en)
Inventor
Robert Charles Menzies
John Edington Aitken
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.)
JOHN EDINGTON AITKON
Original Assignee
JOHN EDINGTON AITKON
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 JOHN EDINGTON AITKON filed Critical JOHN EDINGTON AITKON
Application granted granted Critical
Publication of FR439426A publication Critical patent/FR439426A/fr
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D21H21/46—Elements suited for chemical verification or impeding chemical tampering, e.g. by use of eradicators
FR439426A 1911-01-27 1912-01-27 Perfectionnement à la fabrication du papier Expired FR439426A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191102075T 1911-01-27

Publications (1)

Publication Number Publication Date
FR439426A true FR439426A (fr) 1912-06-13

Family

ID=32638930

Family Applications (1)

Application Number Title Priority Date Filing Date
FR439426A Expired FR439426A (fr) 1911-01-27 1912-01-27 Perfectionnement à la fabrication du papier

Country Status (3)

Country Link
DE (1) DE259850C (fr)
FR (1) FR439426A (fr)
GB (1) GB191102075A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0391542B1 (fr) * 1989-03-14 1995-06-28 The Wiggings Teape Group Limited Composition pour l' authentification des papiers de securité

Also Published As

Publication number Publication date
GB191102075A (en) 1912-01-29
DE259850C (de) 1913-05-02

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