Keiichi Oyama
12Patents
3h-index
19Co-inventors
53Inventor score
Filing activity: May 14, 1998 → Nov 19, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7687066B2 | Self emulsifying oily liquid cosmetic | Human Necessities | 49 | Active |
| US6117434A | Humectant composition, base containing the same, and cosmetic material or external preparation containing said humectant composition | Human Necessities | 11 | Expired |
| US8501210B2 | Gel composition and pack cosmetic using the same | Human Necessities | 3 | Active |
| US8501209B2 | Gel-type water absorbent | Human Necessities | 2 | Active |
| US9125839B2 | Composition for external use on skin, cosmetic, and cleaning agent | Human Necessities | 2 | Active |
| US7763237B2 | Ultraviolet protective preparation and cosmetics containing the same | Human Necessities | 0 | Expired |
| US9028850B2 | Composition for cosmetics, cosmetic, method for producing oil-in-water emulsion cosmetic, and two separate layer-type cosmetic | Human Necessities | 0 | Active |
| US8765718B2 | Cosmetic preparation comprising silicone | Human Necessities | 0 | Active |
| US6416771B1 | Moisturizing composition, base containing the same, and cosmetic or external preparation containing the moisturizing composition | Human Necessities | 0 | Expired |
| US8597669B2 | Cosmetic transparent gel preparation and gelling agent | Human Necessities | 0 | Active |
| US9078819B2 | Cosmetic transparent gel preparation and gelling agent | Human Necessities | 0 | Active |
| US9028848B2 | Composition for cosmetics, cosmetic, method for producing oil-in-water emulsion cosmetic, and two separate layer-type cosmetic | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.