Structure of implementing a directed self-assembled security pattern

• US 10,752,039 B2
• Filed: 02/27/2019
• Issued: 08/25/2020
• Est. Priority Date: 02/29/2016
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Briggs, Benjamin David, Clevenger, Lawrence A., DeProspo, Bartlet H., Rizzolo, Michael
• Primary Examiner(s): Liu, Li
• Application Number:
  US16/287,050
• Publication Number:
  US 20190193452A1
• Time in Patent Office: 545 Days
• CPC Class Codes: B42D 25/24 Passports
• CPC Class Codes: B42D 25/29 Securities; Bank notes
• CPC Class Codes: B42D 25/355 Security threads
• CPC Class Codes: G06F 16/93 Document management systems
• CPC Class Codes: G06V 20/80 Recognising image objects characterised by unique random patterns
• CPC Class Codes: G06V 20/95 Pattern authentication; Markers therefor; Forgery detection

Abstract

A document including a Directed Self-Assembly (DSA) pattern including a unique and randomized pattern embedded on the document, where the DSA is formed by using two different-length polymer chains.

Claims

1. An article of manufacture, comprising:

a Directed Self-Assembly (DSA) pattern embedded on the article of manufacture,

wherein the DSA pattern is formed by using two different-length polymer chains,

wherein the article of manufacture comprises one of;

a passport;

a currency; and

an identification card.

2. A computer program product for analyzing a Directed Self-Assembly (DSA) pattern embedded on the article of manufacture, the DSA pattern being formed by using two different-length polymer chains, the computer program product comprising a non-transitory computer-readable storage medium having program instructions embodied therewith, the program instructions executable by a computer to cause the computer to perform:

reading the DSA pattern embedded on an article of manufacture, the article of manufacture comprising the DSA pattern; and

authenticating the article of manufacture as authentic based on a comparison between the DSA pattern and a database of DSA patterns.