Authenticatable Coatings for Pharmaceutical Tablets
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Solution Overview
Problem
Current anti-counterfeiting technologies for pharmaceutical tablets are inadequate, as they can be easily tampered with and do not provide foolproof authentication, leading to challenges in verifying the authenticity and origin of medications, which poses a threat to public health and the integrity of brand manufacturers.
Innovation Solution
A machine-readable coating formed from a lattice of self-organized particles that diffract light, creating a unique optical signature for each tablet, allowing for authentication and encoding information about the source, dosage, and drug type, making it difficult to counterfeit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional anti-counterfeit technologies are used, then authentication capability is provided, but they can be easily tampered with and are not foolproof
Solution Approach 1:
The patent changes the physical parameters of the coating by using particles with specific size ranges (0.5-5.0 micrometers) and controlled refractive indices (1.05-1.30 relative to substrate). These parameter changes create an optical authentication system that is difficult to replicate while maintaining reliable authentication capability.
Solution Approach 2:
The patent employs composite materials by combining particles of different sizes, materials, and refractive indices within the coating matrix. This composite structure creates complex optical properties that are difficult to counterfeit while providing robust authentication, resolving the contradiction between reliability and complexity.
2Reliability
If particles of different sizes and materials are used in the coating, then authentication reliability is improved, but manufacturing precision becomes more difficult to control
Solution Approach 1:
The patent applies local quality by allowing particle size and material composition to vary within specific ranges rather than requiring uniformity throughout. The particles are distributed with controlled local density variations, creating unique authentication signatures while maintaining overall coating uniformity through defined parameter boundaries.
Solution Approach 2:
The patent controls manufacturing precision by defining specific parameter ranges for particle size (0.5-5.0 micrometers), refractive index (1.05-1.30), and concentration (0.1-10.0 weight percent). These parameter specifications enable reliable authentication while maintaining manufacturability through controlled variability rather than strict uniformity.
3Reliability
If a lattice structure with specific particle arrangement is created, then optical signature uniqueness is improved, but ease of manufacture decreases
Solution Approach 1:
The patent employs self-service by allowing particles to self-organize into lattice structures through controlled deposition processes. The particles naturally arrange themselves based on size, density, and interaction forces during coating application, creating unique optical signatures without requiring complex external positioning mechanisms, thus maintaining ease of manufacture.
Solution Approach 2:
The patent uses substantially spherical particles with diameters in the 0.5-5.0 micrometer range. The spherical geometry facilitates natural packing and self-organization into lattice structures during coating application, enabling unique optical signatures to form automatically while maintaining simple manufacturing processes.
4Measurement precision
If the coating is made machine-readable with encoded information, then authentication accuracy is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical authentication systems with an optical field-based system. The particle lattice structure creates unique optical signatures that can be read remotely using light interaction, eliminating the need for complex mechanical or electronic components in the coating while achieving high authentication accuracy through optical measurement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The coating provides a reliable and visually distinct authentication method that is difficult to replicate, enabling quick and accurate verification of pharmaceutical materials, ensuring authenticity and safety through a machine-readable optical signature.
Implementation Method 1
The coating is formed from a lattice of particles stacked to cause selective diffraction of light
Data Source
AI summary
An authenticable and machine readable coating for pills, tablets and other ingestible materials is provided. The disclosure also relates to methods of authenticating the same. The coatings are formed from a lattice of particles stacked to cause selective diffraction such that each pill or tablet has an optical signature. The signature associated with each coating can be read and authenticated. In one embodiment, the particles are substantially spherical and self-organized. In one embodiment, generally recognized as safe (GRAS) materials are used to form the particles.