Characterizing Complex Polymeric Mixtures via Multi-Dimensional Segmentation

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Solution Overview

Problem

Current methods are inadequate for fully characterizing complex biological mixtures, such as biopolymers and glycoproteins, as they rely on molecular weight distribution alone, which cannot accurately describe batch-to-batch variations or confirm bio-equivalence between preparations.

Innovation Solution

A method involving experimental measurements to narrow down candidate solutions in a step-wise manner, using multiple types of data sets to model the mixture, eliminating non-matching candidates until an acceptably small number remains, allowing for complete characterization of complex polymeric mixtures without directly solving an integrated mathematical formulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If molecular weight distribution alone is used to characterize polymeric mixtures, then the characterization process is simple and quick, but it cannot accurately describe batch-to-batch variations or confirm bio-equivalence in complex biological mixtures

Engineering Contradiction:
Improvecharacterization accuracyVSAvoidcharacterization method complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the characterization process into multiple independent measurement dimensions (molecular weight, composition, structure, functionality) that can be measured separately and then integrated. This allows comprehensive characterization without requiring a single overly complex measurement system, resolving the contradiction between measurement precision and device complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent transitions from one-dimensional molecular weight characterization to multi-dimensional characterization by adding composition, structure, and functionality dimensions. This dimensional expansion enables accurate differentiation of complex biological mixtures while using separate, manageable measurement techniques for each dimension.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Measurement precision

If sequencing methods are used to characterize individual biopolymer species, then detailed compositional information is obtained, but species isolation is required which is impractical or impossible for many complex mixtures

Engineering Contradiction:
Improvecompositional information accuracyVSAvoidsample preparation feasibility
Core Design Contradiction:
Measurement precisionVSEase of manufacture

Solution Approach 1:

The patent uses indirect measurement approaches that create informational copies of the mixture's compositional, structural, and functional properties without requiring physical separation or isolation of individual species. Multiple measurement techniques generate complementary information that together provide complete characterization of the complex mixture as a whole.

Inventive Principle:
Principle #26Copying

3Measurement precision

If multiple types of experimental measurements are performed to fully characterize complex biological mixtures, then complete characterization is achieved, but the data integration and analysis becomes mathematically intractable

Engineering Contradiction:
Improvecomplete characterizationVSAvoiddata integration complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the data integration task by treating each measurement type (molecular weight, composition, structure, functionality) as an independent information dimension that can be analyzed separately before integration. This modular approach to data processing makes the overall characterization mathematically tractable while maintaining complete characterization capability.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS7407810B2Methods and apparatus for characterizing polymeric mixtures
Publication Date: 2008.08.05 MOMENTA PHARMACEUTICALS INC
  • US7407810B2 patent drawing
  • US7407810B2 patent drawing
  • US7407810B2 patent drawing

AI summary

The invention provides methods and apparatus for characterizing complex polymeric mixture of interest. Candidate solutions are eliminated from a solution space using one or more experimental measurements of a polymeric mixture of interest. The elimination step can be repeated one or more times using different experimental measurements produced by various chemical and physical protocols, so that the remaining candidate solutions converge to describe the actual polymeric mixture under investigation. Once the composition of the complex polymeric mixture has been characterized, the information thus generated can be used to facilitate, for example, the manufacture of a bio-equivalent of the complex polymeric mixture.