Inventor
Chen Cai
Inventor
Shanghai, CN
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Fprimary
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein25%
B01DSeparation13%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry13%
H03MCoding13%
LOC0213%
LOC1213%
LOC2313%
PatentTitleYear
D0927140Bib202110,654,028Catalyst for catalyzing formaldehyde oxidation and the preparation and use of the same202010,536,169Encoder and decoder for LDPC code2020D0840304Automotive air purifier2019D0804003'Automotive air purifier'20176,724,449'Vertical aligned liquid crystal display and method using dry deposited alignment layer films'20046,067,142'Vertically aligned pi-cell LCD having on-state with mid-plane molecules perpendicular to the substrates'2000Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2000–2004Patents assigned to IBM (2)· patent assignee history
2000Based in White Plains, NY, US· patent location history
2004Based in Hartsdale, NY, US· patent location history
2017–2019Patents assigned to KONINKLIJKE PHILIPS NV (2)· patent assignee history
2017–2020Based in Shanghai, CN· patent location history
2019–2020Patents assigned to LUMILEDS HOLDING BV (2)· patent assignee history
2020Patents assigned to BEIJING HANG TIAN HUA TECH CO LTD (1)· patent assignee history
2020Based in Beijing, CN· patent location history
2021Patents assigned to CAI CHANGFENG (1)· patent assignee history
2021Based in Hubei, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| IBM | 2 | 2000–2004 |
| KONINKLIJKE PHILIPS NV | 2 | 2017–2019 |
| LUMILEDS HOLDING BV | 2 | 2019–2020 |
| BEIJING HANG TIAN HUA TECH CO LTD | 1 | 2020 |
| CAI CHANGFENGself | 1 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Shanghai, CN | 3 | 2017–2020 |
| Hubei, CN | 1 | 2021 |
| Beijing, CN | 1 | 2020 |
| Hartsdale, New York, US | 1 | 2004 |
| White Plains, New York, US | 1 | 2000 |