Inventor
Lawrence Cheung
Inventor
Wilmington, DE, US
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H10Fprimary
H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation47%
G01TMeasurement of nuclear or x-radiation27%
H04NPictorial communication, e.g. television13%
G03GElectrography7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%
PatentTitleYear
7,304,308'Amorphous selenium flat panel x-ray imager for tomosynthesis and static imaging'20077,233,005'Amorphous selenium flat panel x-ray imager for tomosynthesis and static imaging'20077,122,803'Amorphous selenium flat panel x-ray imager for tomosynthesis and static imaging'20066,437,339'Flat panel x-ray imager with gain layer'20026,025,599'Image capture element'20005,844,243'Method for preparing digital radiography panels'19985,563,421'Apparatus and method for eliminating residual charges in an image capture panel'19965,319,206'Method and apparatus for acquiring an X-ray image using a solid state device'19944,818,660'Photohardenable electrostatic master having improved backtransfer and charge decay'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–1994Patents assigned to DU PONT (2)· patent assignee history
1989Based in Hockessin, DE, US· patent location history
1994–2000Based in Berwyn, PA, US· patent location history
1996Patents assigned to STERLING DIAGNOSTIC IMAGING (1)· patent assignee history
1998Patents assigned to DIRECT RADIOGRAPHY CO (1)· patent assignee history
2000Patents assigned to DIRECT RADIOGRAPHY CORP (1)· patent assignee history
2002–2007Patents assigned to HOLOGIC INC (4)· patent assignee history
2002–2007Based in Wilmington, DE, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HOLOGIC INC | 4 | 2002–2007 |
| DU PONT | 2 | 1989–1994 |
| DIRECT RADIOGRAPHY CO | 1 | 1998 |
| DIRECT RADIOGRAPHY CORP | 1 | 2000 |
| STERLING DIAGNOSTIC IMAGING | 1 | 1996 |
Locations
| Location | Patents | Span |
|---|---|---|
| Wilmington, Delaware, US | 4 | 2002–2007 |
| Berwyn, Pennsylvania, US | 4 | 1994–2000 |
| Hockessin, Delaware, US | 1 | 1989 |