Norbert Schaefer
57Patents
18h-index
75Co-inventors
87Inventor score
Filing activity: Jun 1, 1992 → Dec 20, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5993402A | Pressure relief valve for an oral irrigator | Human Necessities | 132 | Expired |
| US6245032A | Jet nozzle for an oral irrigator | Performing Operations; Transporting | 66 | Expired |
| USD611712S1 | Toothbrush refill | General | 65 | Expired |
| USD501084S1 | Portion of a toothbrush | General | 63 | Expired |
| US8813292B2 | Electric toothbrush and brush head for an electric toothbrush | Human Necessities | 57 | Active |
| US6094769A | Bristle for a toothbrush | Emerging Cross-Sectional Technologies | 45 | Expired |
| US7392562B2 | Motor-driven toothbrush and brush head for it | Human Necessities | 41 | Expired |
| US6139319A | Method and device for the cleansing and care of the teeth and gums | Human Necessities | 38 | Expired |
| US9724181B2 | Oral care implement | Emerging Cross-Sectional Technologies | 36 | Active |
| US5673710A | Appliance for treating hair | Human Necessities | 34 | Expired |
| US10660733B2 | Oral care implement | Emerging Cross-Sectional Technologies | 31 | Active |
| US9154025B2 | Personal care device | Human Necessities | 30 | Active |
| US6475553B2 | Method of manufacturing a textured toothbrush bristle | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6354305B1 | Hair styling appliance and hair styling method | Human Necessities | 22 | Expired |
| US6141819A | Bristle for a toothbrush | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5394862A | Heatable appliance for personal use | Emerging Cross-Sectional Technologies | 20 | Expired |
| US8631532B2 | Oral hygiene device | Human Necessities | 20 | Active |
| USD504569S1 | Set of bristles for a toothbrush | General | 19 | Expired |
| US7690067B2 | Brush attachment for an electric toothbrush | Human Necessities | 18 | Active |
| US6327736A | Bristle for a toothbrush | Emerging Cross-Sectional Technologies | 15 | Expired |
| US8479750B2 | Mouth cleaning device and head portion of a mouth cleaning device | Human Necessities | 14 | Active |
| US9603686B2 | Oral hygiene implement | Human Necessities | 14 | Active |
| US8052627B2 | Spray nozzle and dental cleaning system | Performing Operations; Transporting | 14 | Active |
| US5691293A | Stable, dual-function, phosphate-, metasilicate- and polymer-free low-alkali detergent tablets for dishwashing machines and a process for their production | Chemistry; Metallurgy | 12 | Expired |
| US9226808B2 | Attachment section for an oral hygiene device | Human Necessities | 11 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.