Inventor
Yihong Xu
Inventor
Marlborough, MA, US
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G06Kprimary
G06KGraphical data reading33%
G06TImage data processing or generation, in general11%
G06VImage or video recognition or understanding11%
G09CCiphering or deciphering apparatus for cryptographic or other purposes involving the need for secrecy11%
H04KSecret communication11%
H04LTransmission of digital information, e.g. telegraphic communication11%
H04NPictorial communication, e.g. television11%
PatentTitleYear
7,107,453'Authenticatable graphical bar codes'20067,028,902'Barcode having enhanced visual quality and systems and methods thereof'20066,976,166'Method and apparatus for partial encryption of content'20056,751,352'Method and apparatus for generating and decoding a visually significant barcode'2004Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2004–2006Patents assigned to HEWLETT PACKARD DEVELOPMENT CO (4)· patent assignee history
2004–2006Based in Marlborough, MA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HEWLETT PACKARD DEVELOPMENT CO | 4 | 2004–2006 |
Locations
| Location | Patents | Span |
|---|---|---|
| Marlborough, Massachusetts, US | 4 | 2004–2006 |