Patent Portfolio

This portfolio showcases a selection of issued United States Utility and Design Patents - ranging from complex modular mechanical assemblies to high-friction consumer product interfaces.

Each patent represents a successfully solved real-world manufacturing challenge, brought from initial CAD blueprints to fully protected, market-ready intellectual property.

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Intellectual Property

Modular Wall System Patent
US 10878731 B1 Inventor: John Kraljic

A modular wall organization system, e.g., modular bulletin board system, including plural board assemblies. Each of the assemblies includes corner nodes which are configured to be connected to other corner nodes to enable the assemblies to be connected in various configurations on a wall either horizontally or vertically or horizontally and vertically.

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Drafting Device Patent Sketch
US 4920895 B1 Inventor: John Kraljic

A drafting device connectable to a side of a drafting board having a top surface is disclosed. A storage tray for drafting tools is affixed to the top of the housing. A removable trough is slidably mounted in the interior of the housing and has a retracted position, an extended position, and a pair of lips. A slot is contained on either of the pair of sides of the housing so that eraser shavings can be brushed from the drafting board through the slot.

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Luggage Wheel Lock Patent Drawing
US 9351549 B1 Inventor: John Kraljic

A compact mechanical retention brake designed for rolling luggage. Eliminates accidental drift on sloped transit platforms or inclines without complicating standard castor mobility.

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Modular Pet Bed Patent Drawing
US 12677796 B1 Inventor: John Kraljic

This portable pet bed features an adjustable pillow that shifts to expand the core sleeping area, alongside integrated pockets that house a built-in protective cover. To facilitate transport, the cover fully enwraps the top and bottom sections of the bed, which is carried via an attached strap assembly.

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Luggage Device with Child Seat Patent Sketch
US 8662267 B1 Inventor: John Kraljic

This proprietary utility patent covers an advanced article of luggage with a deployable child transport system. Utilizing a specialized internal cavity, the luggage housing stores a fully retractable child seat that extends to provide a secure, load-bearing backrest. Engineered with a high-durability multi-wheel wheelbase and a structural towing handle, the assembly allows for smooth, single-handed mobility of passenger and cargo alike. The flush-nesting design ensures the seat assembly retracts completely into the suitcase body, optimizing internal packing capacity while delivering an on-demand, space-saving mobility solution.

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Metal Stamp Patent Line Drawing
US D797825 B1 Inventor: John Kraljic

This proprietary design patent protects the unique visual and structural architecture of our precision metal stamp jig. Engineered to provide structural alignment and stability for DIY and industrial hand-stamping applications, the patented design features a specialized guide profile optimized for consistent tool placement. By securing the exclusive ornamental rights to this distinct, high-utility form factor, this patent establishes a strong defensive barrier for our core hand-stamping tool technology, safeguarding our brand's market leadership and protecting our signature hardware configurations against imitation.

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Wall Organization System Patent Line Drawing
US 11103068 B1 Inventor: John Kraljic

Advanced modular wall organization system comprising a highly configurable framework of interconnecting board assemblies. Each assembly utilizes a structural perimeter frame holding at least one planar panel insert, featuring a specialized matrix of hollow frame sections and structural corner nodes. This modular architecture allows the frame profiles to function as load-bearing mounting points for custom hangers, enabling the seamless integration of organizational accessories—such as utility trays, storage baskets, and writing material dispensers—or the coupling of multiple board assemblies for scalable wall coverage.

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Mailer to Plush Toy Patent Sketch
US 12371228 B1 Inventor: John Kraljic

An innovative, dual-purpose reusable protective mailer engineered to transition seamlessly from a rugged shipping envelope to a premium consumer storage solution. The system features a secure carrying volume lined with a high-durability protective plush material, enclosed by a robust outer shell. To facilitate shipping, a specialized multi-segment protective adhesive tape secures across the top opening, bonding removably to the front and rear exterior surfaces to create a secure, tamper-resistant seal.

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Stamping Hammer Patent Drawing
US D779906 B1 Inventor: John Kraljic

This proprietary design patent protects the unique visual architecture and ornamental aesthetic of our specialized metal stamping hammer. Tailored specifically for precision hand-stamping applications, the patented design features an ergonomic, angled head profile and a balanced, low-fatigue handle geometry optimized for delivering a flush, high-impact strike. By securing the exclusive ornamental rights to this distinctive form factor, this patent establishes a powerful defensive barrier for our core hand-stamping tool product line, ensuring protection against market imitations.

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Stamping Plate Patent Drawing
US 11712914 B1 Inventor: John Kraljic

Advanced precision stamping kit engineered to deliver highly accurate, repeatable character alignment for metal-stamping and crafting applications. The system comprises a specialized stamping jig, a dimensionally matched insert card, and a plurality of custom stamps.

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Stamping Jig Patent Sketch
US 12441131 B1 Inventor: John Kraljic

Engineered for impact, each stamp features a reinforced upper (proximal) end rated for hammer strikes and a character-engraved lower (distal) end. The lower shaft of each stamp is precisely toleranced to slide down the jig’s vertical guide slot, ensuring a perfectly perpendicular strike against the card.

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Texture Stamping Hammer Patent Drawing
US D846366 B1 Inventor: John Kraljic

An ornamental hand tool configured for imparting textured patterns onto a target surface via manual or impact force. The tool features a contoured, cylindrical shank terminating in a flat, force-distributing strike face at its proximal end, transitioning downward into an ergonomic grip section. Below the grip, a multi-faceted alignment collar provides rotational stability and visual orientation during placement. The distal working end tapers to a low-profile texturing head featuring a micro-patterned geometric matrix designed to uniformly displace material and imprint a precise relief design upon contact.

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Beverage Dispensing Cooler Patent Drawing
US 10,345,026 B2 Inventor: John Kraljic

A beverage dispensing cooler is disclosed, featuring an insulated container body with an interior reservoir configured to hold and chill a liquid payload. The system integrates a dedicated fluid-delivery manifold coupled to an externally accessible dispensing valve, allowing for controlled, gravity-assisted or pressure-regulated flow of the chilled beverage. Built-in sealing interfaces and thermal barriers maintain interior temperature stability, while the external housing features structural reinforcements, mounting points, and ergonomic handles to facilitate transport and secure placement during operation.

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For over three decades, idk3CO has been designing and engineering market-leading products while securing bulletproof IP protection for our clients. Our patent portfolio represents a systematic alignment of high-fidelity product development and strategic intellectual property consulting.

Every utility and design patent within this catalog has been engineered from the ground up using strict Design for Manufacturing (DFM) principles. This ensures our proprietary mechanisms are never merely theoretical concepts, but commercially viable, production-ready assets designed to scale.

Explore our documented innovations to see how we transform advanced industrial design into secure, high-yield intellectual property primed for global manufacturing.