US Patent 6,083,192 granted, extending Bath's cataract-removal innovations from laser technology to pulsed ultrasound methods.
On July 4, 2000, Patricia Bath was granted US Patent 6,083,192, which extended her cataract-removal innovations beyond laser technology into the realm of pulsed ultrasound. This patent demonstrated her adaptability as an inventor, willing to explore alternative energy modalities to achieve the same fundamental goal: safer, more effective, and more accessible cataract removal.
Pulsed ultrasound technology, which uses high-frequency sound waves to break apart and remove the clouded lens material, represented a parallel and complementary approach to laser-based ablation. By patenting both laser and ultrasound methods, Bath positioned her portfolio of inventions to address a wider range of clinical scenarios and technological contexts, increasing the potential reach and applicability of her contributions to ophthalmic surgery.
This diversification of her patent portfolio reflects Bath's deep scientific curiosity and her refusal to be limited to a single technological pathway. It also reveals her strategic thinking as an inventor operating in a competitive and rapidly evolving field of medical technology, where cataract surgery techniques were being continuously refined by researchers and companies around the world throughout the 1990s.