Inventor
Charles C. Cheng
Inventor
Cupertino, CA, US
Overview
Patents· 14 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer27%
B82YSpecific uses or applications of nanostructures23%
G02BOptical elements, systems or apparatus17%
G06FElectric digital data processing10%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes10%
G02CSpectacles7%
G06KGraphical data reading3%
Y10TTechnical subjects covered by former us classification3%
PatentTitleYear
10,437,079Predefined reflective appearance eyewear lens with neutral balance visual perception201910,371,967Predefined reflective appearance eyewear lens with balance chroma enhancement visual perception20199,536,007'Method for location-based asset management'20177,579,960'Method for location-based asset management'20096,806,813'Method for location-based asset management'20046,377,535'High numerical aperture optical focusing device having a conical incident facet and a parabolic reflector for use in data storage systems'20026,229,782'High numerical aperture optical focusing device for use in data storage systems'20016,212,153'High NA solid catadioptric focusing device having a flat kinoform phase profile'20016,185,051'High numerical aperture optical focusing device for use in data storage systems'20016,130,779'Near field magneto-optical head made using wafer processing techniques'20006,094,803'Wafer processing techniques for near field magneto-optical head'20005,986,978'Read/write head and method for magnetic reading and magneto-optical writing on a data storage medium'19995,986,995'High NA catadioptric focusing device having flat diffractive surfaces'19994,224,509'Holographic scanning system'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980Based in Pittsford, NY, US· patent location history
1999–2002Patents assigned to READ RITE CORP (8)· patent assignee history
1999–2002Based in Cupertino, CA, US· patent location history
2004Patents assigned to AT & T WIRELESS SERVICES INC (1)· patent assignee history
2004–2017Based in Redmond, WA, US· patent location history
2009–2017Patents assigned to AT & T MOBILITY II LLC (2)· patent assignee history
2017Patents assigned to CHENG CHARLES C (1)· patent assignee history
2019Patents assigned to HWA MEEI OPTICAL CO LTD (2)· patent assignee history
2019Based in Tainan, TW· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| READ RITE CORP | 8 | 1999–2002 |
| AT & T MOBILITY II LLC | 2 | 2009–2017 |
| HWA MEEI OPTICAL CO LTD | 2 | 2019 |
| AT & T WIRELESS SERVICES INC | 1 | 2004 |
| CHENG CHARLES Cself | 1 | 2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| Cupertino, California, US | 8 | 1999–2002 |
| Redmond, Washington, US | 3 | 2004–2017 |
| Tainan, TW | 2 | 2019 |
| Pittsford, New York, US | 1 | 1980 |