Inventor
CHUN-YEN TSAO
Inventor
TW
Overview
Patents· 1 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A47Gprimary
A47GHousehold or table equipment33%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges33%
F16MFrames, casings or beds of engines, machines or apparatus, not specific to engines, machines or apparatus provided for elsewhere33%
PatentTitleYear
11,346,389Rotary closed-valve vacuum suction device2022Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2022Patents assigned to NINE THREE INT CO LTD (1)· patent assignee history
2022Based in TW· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NINE THREE INT CO LTD | 1 | 2022 |
Locations
| Location | Patents | Span |
|---|---|---|
| TW | 1 | 2022 |