HL

Helen Leong

AS Advanced Poymer Systems: 4 patents #7 of 29Top 25%
📍 Atherton, CA: #172 of 431 inventorsTop 40%
🗺 California: #106,790 of 386,348 inventorsTop 30%
Overall (All Time): #1,057,352 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
5286979 Process for absorbing ultraviolet radiation using dispersed melanin David L. Berliner 1994-02-15
5156843 Fabric impregnated with functional substances for controlled release Martin Katz, Chung-Heng Cheng 1992-10-20
5073365 Clinical and personal care articles enhanced by lubricants and adjuvants Martin Katz, Chung-Heng Cheng 1991-12-17
4855144 Synthetic melanin aggregates Martin Katz, Ann Delk, Sergio Nacht, David L. Berliner 1989-08-08
4806360 Synthetic melanin aggregates Martin Katz, Anne Delk, David L. Berliner, Sergio Nacht 1989-02-21