Inventor
Chao Fan
Inventor
Hefei, CN
Overview
Patents· 3 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling40%
B29DProducing particular articles from plastics or from substances in a plastic state20%
G02BOptical elements, systems or apparatus20%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices20%
PatentTitleYear
11,092,888Processing method for multi-row, multi-column flat lens with equivalent negative refractive index20217,735,550'Throttle unit for dump bailer and method of blocking a water out zone in a production well utilizing the same'20107,694,737'Method of blocking water-out zone in a gas well by dumping cement and injecting pressurizing gas'2010Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2010Patents assigned to CPC CORP (1)· patent assignee history
2010Patents assigned to CPC CORP TAIWAN (1)· patent assignee history
2010Based in Miao-Li County, TW· patent location history
2010Based in Miaoli, TW· patent location history
2021Patents assigned to ANHUI DONGCHAO SCIENCE AND TECH COMPANY LTD (1)· patent assignee history
2021Based in Hefei, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ANHUI DONGCHAO SCIENCE AND TECH COMPANY LTD | 1 | 2021 |
| CPC CORP | 1 | 2010 |
| CPC CORP TAIWAN | 1 | 2010 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hefei, CN | 1 | 2021 |
| Miao-Li County, TW | 1 | 2010 |
| Miaoli, TW | 1 | 2010 |