You can freely build on How the Popsicle Was Invented by Accident

What this patent covers

The patent describes a method for creating a frozen confection by placing a handle into a container of liquid, such as soda or fruit juice, and freezing the mixture until it becomes a solid block. The handle remains embedded in the frozen mass, allowing the user to hold the treat without touching the ice directly. This simple mechanical design allows for a portable, handheld frozen snack that melts slowly while being consumed.

What is now free to use

All 0 claims of US 1505592 are in the public domain. Specifically:

The 0 dependent claims add narrowing limitations and are also free.

What is NOT covered

Patent expiry frees this specific invention. Separately-patented improvements made after expiry may still be protected.

• Does not cover non-frozen confections or candies.

• Does not cover liquid-based treats that do not utilize a handle or stick for consumption.

• Does not cover the chemical composition of the flavoring or the specific type of liquid used.

Who is building on this today

The Popsicle brand is currently owned by Unilever, which continues to dominate the market for this type of frozen novelty. Many smaller artisanal ice pop manufacturers also utilize the fundamental method described in this patent.

Products built on expired version of this technology

How to cite this patent in your documentation

Individual. US Patent 1505592. Frozen confectionery. Granted 1924, expired 1944. Now in the public domain.

Note: This is a convenience citation. Consult a patent attorney for formal freedom-to-operate analysis.

PatentBrief is an educational resource and does not provide legal advice. Patent expiration information is derived from USPTO records and may not reflect continuation patents, divisional filings, or separately-patented improvements. For commercial use or production decisions, obtain a formal freedom-to-operate (FTO) opinion from a registered patent attorney.