FR559660A - Security paper and process for making it - Google Patents
Security paper and process for making itInfo
- Publication number
- FR559660A FR559660A FR559660DA FR559660A FR 559660 A FR559660 A FR 559660A FR 559660D A FR559660D A FR 559660DA FR 559660 A FR559660 A FR 559660A
- Authority
- FR
- France
- Prior art keywords
- making
- security paper
- security
- paper
- 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
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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US511808A US1535861A (en) | 1921-10-31 | 1921-10-31 | Safety paper and process of making the same |
Publications (1)
Publication Number | Publication Date |
---|---|
FR559660A true FR559660A (en) | 1923-09-19 |
Family
ID=10357968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR559660D Expired FR559660A (en) | 1921-10-31 | 1922-12-11 | Security paper and process for making it |
Country Status (3)
Country | Link |
---|---|
US (1) | US1535861A (en) |
FR (1) | FR559660A (en) |
GB (1) | GB209919A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2496127A (en) | 2011-10-31 | 2013-05-08 | Aidc Global Ltd | A randomly generated identification mark |
-
1921
- 1921-10-31 US US511808A patent/US1535861A/en not_active Expired - Lifetime
-
1922
- 1922-12-11 FR FR559660D patent/FR559660A/en not_active Expired
- 1922-12-12 GB GB33828/22A patent/GB209919A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US1535861A (en) | 1925-04-28 |
GB209919A (en) | 1924-01-24 |
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