Charles E. Clum
11Patents
6h-index
6Co-inventors
55Inventor score
Filing activity: Jun 29, 1981 → Jul 23, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4911932A | Skin care compositions | Human Necessities | 36 | Expired |
| US4663155A | Sunscreen compositions | Human Necessities | 33 | Expired |
| US4423041A | Detackifying compositions | Human Necessities | 30 | Expired |
| US4663156A | Sunscreen compositions | Human Necessities | 26 | Expired |
| US5559149A | Skin care compositions containing retinoids | Human Necessities | 25 | Expired |
| US4514383A | Sunscreen compositions containing vinylogous amides | Human Necessities | 9 | Expired |
| US5652263A | Retinoid compositions containing a water soluble antioxidant and a chelator | Human Necessities | 4 | Expired |
| US4759926A | Sunscreen compositions | Human Necessities | 2 | Expired |
| USRE38813E1 | Retinoid compositions containing a water soluble antioxidant and a chelator | General | 1 | Expired |
| US4761275A | Sunscreen compositions | Human Necessities | 1 | Expired |
| US4761276A | Sunscreen compositions | Human Necessities | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.