Hemp Composite Patent Portfolio
Prior to developing Concord Fiber Group’s recycled PET structural panel platform, John Graham spent four years developing and patenting a family of extrusion-based hemp composite construction technologies. That work resulted in three issued U.S. patents covering composite structural panel systems and the proprietary extrusion manufacturing methods used to produce them.
Developed over four years, the portfolio represents a significant investment in engineering, prototype development, and intellectual property creation focused on using industrial hemp fiber as a structural reinforcement within extrusion-based composite construction systems.
The technology was developed around a simple premise: industrial hemp fiber, when combined with engineered thermoplastic binders and modern extrusion processes, could create a new generation of higher-performance composite construction materials manufactured at competitive cost.
These patents are personally owned by the inventor and are available for licensing, strategic partnership, or outright acquisition independently of Concord Fiber Group’s recycled PET structural panel platform.
Technology Overview
The patented technologies cover extrusion-based structural composite panels reinforced with industrial hemp fiber. Unlike traditional wood-based construction boards, these systems are engineered around a composite material platform that combines hemp fiber with thermoplastic binders to create lightweight structural panels designed for moisture resistance, dimensional stability, and long-term durability.
Unlike conventional construction boards manufactured around fixed material properties, the patented extrusion and co-extrusion technologies were developed to engineer performance directly into the panel architecture through tunable multilayer composite structures.
The patent portfolio includes both composite panel architectures and the extrusion manufacturing processes required to produce them, providing potential licensees with protection covering both the product and its method of manufacture.
Why Industrial Hemp?
Industrial hemp offers several characteristics that make it an attractive reinforcement fiber for structural composite construction materials.
Strength-to-Weight Ratio
Hemp bast fibers provide favorable strength-to-weight characteristics relative to many conventional natural fibers, supporting lightweight structural panel and reinforcement applications.
Thermal Performance
The natural cellular structure of hemp contributes to thermal resistance characteristics that support integrated structural-and-insulation composite systems.
Biological Resistance
Industrial hemp demonstrates natural resistance to mold, mildew, and biological degradation, supporting longer service life in moisture-prone environments.
Acoustic Performance
Hemp fiber structures contribute to sound attenuation and vibration dampening, making them well suited for multifamily, institutional, and specialty construction applications.
Alternative Structural Feedstock
Hemp-based composite systems provide an alternative to conventional wood-fiber feedstocks while expanding the range of engineered composite material options available to manufacturers.
Potential Applications
The patented technologies were developed for a broad range of composite construction products, including:
Structural sheathing systems
Composite construction boards
Interior wall and ceiling panels
Exterior trim and cladding products
Industrial composite panels
Agricultural and utility structures
Application-specific engineered composite systems
Cutaway of Hemp Stalk
Three Issued U.S. Patents Available for Licensing or Acquisition
Issued Patents Three issued U.S. patents; two product patents and one process patent
Technology Coverage Hemp composite structural panel systems and extrusion manufacturing methods
Ownership John Graham (Inventor)
Commercial Availability Exclusive or non-exclusive licensing, strategic partnership, or acquisition
For companies seeking to expand into sustainable composite building materials, this portfolio provides an accelerated path to market through issued intellectual property covering both composite panel design and extrusion-based manufacturing methods.
Licensing Opportunities
The patent portfolio is available for exclusive licensing, non-exclusive licensing, strategic partnership, or outright acquisition.
Organizations interested in evaluating the portfolio for licensing, strategic partnership, or acquisition are invited to contact John Graham directly. Additional technical documentation and patent materials are available upon request.
Patents Overview
Co-Extruded Hemp Composite Board Product Patent (CHB)
Status: Issued | U.S. Patent 12,654,355 | Issued May 16, 2026 | Filed May 26, 2023
Protects a multi-layer hemp composite construction board in which individual layers can be engineered independently for structural performance, moisture resistance, fire resistance, thermal performance, and other application-specific characteristics using a common co-extrusion manufacturing platform.
Extruded Hemp Composite Board Product Patent (EHB)
Status: Issued | U.S. Patent 12,269,953 | Issued April 8, 2025 | Filed May 26, 2023
Protects a structural hemp composite construction board manufactured through extrusion using industrial hemp fibers and thermoplastic binders. The invention provides a durable alternative to conventional wood-based panels while enabling scalable continuous production.
Extruded Hemp Composite Board Method Patent (EHB)
Status: Issued | U.S. Patent 12,269,927 | Issued April 8, 2025 | Filed May 26, 2023
Protects the proprietary extrusion manufacturing process used to produce structural hemp composite boards, including material distribution, fiber orientation, consolidation, and continuous production techniques.
Co-Extruded Hemp Composite Board Method Patent (CHB)
Status: Published (Patent Pending) | Published March 14, 2024 | Filed May 26, 2023
Protects the continuous co-extrusion manufacturing process used to produce multilayer composite construction boards with independently engineered performance layers from a single manufacturing platform.