Korean Celebrities Transform Everyday Ideas into Patented Innovations and Business Ventures

The traditional avenues of wealth accumulation such as real estate and stocks are no longer the sole paths to financial success. In today’s innovation-driven economy, ideas themselves have become valuable assets, protected and monetized through patents. Several South Korean celebrities have embraced this trend, transforming everyday problems into patented solutions and launching related businesses.

Comedian Jang Dong-min, renowned for his sharp intellect on survival shows, has ventured into the patent arena with a practical innovation addressing recycling frustrations. Recognizing the difficulty many face when peeling labels off PET bottles for recycling, Jang developed a one-touch label removal technology. His invention reorients the typical horizontal label to a vertical position and enables label removal simply by twisting the bottle cap.

Jang filed a patent for this technology in 2021. The innovation garnered attention for simplifying the recycling process and enhancing environmental sustainability. Capitalizing on this, he founded the eco-friendly startup Blue Sky. That same year, Blue Sky earned the Korea Environmental Industry & Technology Institute President's Award at the Ministry of Climate, Energy and Environment's Environmental Startup Competition. In April 2023, Jang advanced commercialization efforts by signing a tripartite Memorandum of Understanding with Kwangdong Pharmaceutical and other partners to develop and produce PET bottle labels using his patented technology.

In September 2023, Jang further highlighted his international patent portfolio by revealing on MBC’s variety show "Home Alone?" that he had secured patent registrations in nine countries.

Actress and film director Ku Hye-sun has also added inventor to her professional titles. Inspired by observing students navigating daily life with conventional hair rollers still in place, she developed "KOOROLL," a reimagined hair roller designed for convenience and sustainability.

Ku explained on MBC’s "Radio Star" in 2024 that her patent journey began as a graduation requirement at Sungkyunkwan University, where she studied for 13 years. Collaborating with KAIST endowed chair professor Lee Hae-shin, she co-developed the technology, which was officially patented in December 2021.

"KOOROLL" departs from traditional round hair rollers by utilizing a high-performance polymer composite with a wave-shaped mold and silicone lamination. This design allows the roller to be flattened, rolled back up, and resized. It also features a self-restoring function that returns the roller to its original shape without heat or additional devices.

Environmentally, "KOOROLL" significantly reduces plastic usage by about 80% compared to conventional rollers, which typically have a solid plastic body. The innovation was recognized as an Outstanding Patent in 2025.

The product was commercialized with pricing at 13,000 won for a single unit and 25,000 won for a set of two. While some consumers criticized the price as steep compared to traditional rollers priced between 500 and 5,000 won, Ku defended the premium by highlighting the product’s durability, ease of cleaning, and semi-permanent usability.

In March 2024, Ku announced that "KOOROLL" had sold out and teased the release of a new product.

Actress Lee Si-won, known for her academic background as a Seoul National University graduate, holds an impressive portfolio of 11 patents. On the 2023 episode of "Radio Star," she attributed her inventive spirit to her father, a former Mensa president who treats invention as a hobby. Lee shared that she has been engaged in inventing since childhood under his influence.

These examples illustrate a growing trend among South Korean celebrities who are leveraging intellectual property rights to transform creative ideas into tangible assets and commercial successes. Their efforts underscore the expanding role of patents in personal branding and business development within the entertainment industry and beyond.