Advanced Composite Foam for Specialized Footwear Applications
Legal Citation
Background and Problem Solved
The original patent disclosed a high-performance composite foam for midsoles, but it lacked adaptability for specific, narrow markets or unique operational environments. This invention addresses the limitations of the original patent by providing specialized variations of the composite foam, tailored to meet the demands of high-security, disaster relief, extreme weather conditions, and search and rescue applications.
Novelty and Inventive Step
The new claims introduce novel and non-obvious variations of the original composite foam, including enhanced shock absorption, thermal insulation, grip, and self-healing properties. These specialized features address specific needs in high-security, disaster relief, extreme weather conditions, and search and rescue applications, providing a significant inventive step over the original patent.
Alternative Embodiments and Variations
Alternative embodiments of the invention may include using different types of thermoplastic elastomers or polyurethane matrices to achieve the desired properties. Additionally, the foam could be formulated with additives or coatings to enhance its performance in specific environments. Other variations may include using different shapes or geometries for the pelletized expanded thermoplastic elastomer to optimize its performance in various applications.
Potential Commercial Applications and Market
The enhanced composite foam has significant commercial potential in the footwear industry, particularly in niche markets such as high-security, disaster relief, extreme weather conditions, and search and rescue operations. The invention could be licensed to manufacturers of specialized footwear, providing a competitive advantage in these markets.
CPC Classifications
| Section | Class | Group |
|---|---|---|
| A | A43 | A43B13/026 |
| A | A43 | A43B13/04 |
| C | C08 | C08J9/0061 |
| C | C08 | C08L75/04 |
| C | C08 | C08J2367/02 |
| C | C08 | C08J2375/04 |
| C | C08 | C08J2377/00 |
| C | C08 | C08J2467/02 |
| C | C08 | C08J2475/04 |
| C | C08 | C08J2477/00 |
Section 103 Obviousness Analysis (PHOSITA)
Field of Art
Footwear materials engineering, specifically composite foam technologies for performance midsoles, involving polymer chemistry, material science, and athletic shoe design with expertise in thermoplastic elastomers and polyurethane matrix compositions
Person of Ordinary Skill (PHOSITA) Profile
A materials engineer or polymer scientist with advanced degree, 3-5 years industrial experience in footwear material development, familiar with elastomer compounding, thermal processing techniques, and performance optimization of composite foam systems
Obviousness Rationale
A PHOSITA would recognize that the source patent's composite foam technology provides a fundamental platform for targeted performance modifications. The disclosed variations represent predictable extensions of known material science principles, applying standard engineering approaches to adapt the base composite foam for specialized environmental and functional requirements. The core material composition remains substantially consistent, with modifications achievable through routine material engineering techniques.
Obvious Combinations & Variations
Original Patent Information
| Patent Number | US 11,857,024 |
|---|---|
| Title | Composite foam for midsole |
| Assignee(s) | Columbia Sportswear North America, Inc. |