Grey Technology Limited
12Patents
4Active
12Granted
35Portfolio score
Filing activity: Jul 29, 2004 → Apr 4, 2014 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9560944B2 | Vacuum cleaner | Human Necessities | 29 | Active |
| US7331078B2 | Surface cleaning apparatus | Human Necessities | 23 | Expired |
| USD506653S1 | Hedge trimmer | General | 17 | Expired |
| USD591918S1 | Vacuum cleaner | General | 16 | Expired |
| USD568008S1 | Vacuum cleaner | General | 13 | Expired |
| US7802343B2 | Suction head for a vacuum cleaner | Human Necessities | 9 | Active |
| USD554814S1 | Vacuum cleaner head | General | 9 | Expired |
| US9737183B2 | Vacuum cleaner | Human Necessities | 4 | Active |
| USD591917S1 | Vacuum cleaner | General | 2 | Expired |
| USD598262S1 | Multi-function tool handle | General | 1 | Expired |
| US8499398B2 | Surface cleaning apparatus | Human Necessities | 1 | Active |
| USD588758S1 | Hand held cleaner | General | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.