Inventor
Tung-Feng Yeh
Inventor
Waltham, MA, US
Overview
Patents· 20 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B42Dprimary
B42DBooks17%
Y10TTechnical subjects covered by former us classification13%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form8%
B41MPrinting, duplicating, marking, or copying processes8%
G06KGraphical data reading8%
B44CProducing decorative effects6%
G02BOptical elements, systems or apparatus6%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices6%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light6%
PatentTitleYear
10,315,452Forensic feature for secure documents20199,399,363'Forensic feature for secure documents'20169,190,799'Q-switched all-fiber laser'20159,190,800'Q-switched all-fiber laser'20158,377,847'Image destruct feature used with image receiving layers in secure documents'20138,334,234'Hard coat and image receiving layer structures for indentification documents'20127,963,449'Tamper evident adhesive and identification document including same'20117,939,465'Image destruct feature used with image receiving layers in secure documents'20117,866,559'ID document structure with pattern coating providing variable security features'20117,833,937'Image destruct feature used with image receiving layers in secure documents'20107,829,498'Hard coat and image receiving layer structures for identification documents'20107,801,403'Optical fiber grating tuning device and optical systems employing same'20107,744,002'Tamper evident adhesive and identification document including same'20107,383,999'ID document structure with pattern coating providing variable security features'20086,258,505'Heat and radiation-sensitive imaging medium, and processes for use thereof'20016,054,246'Heat and radiation-sensitive imaging medium, and processes for use thereof'20005,925,289'Synthetic UV-bleached polarizer and method for the manufacture thereof'19995,677,110'On-press development of an overcoated lithographic plate'19975,677,108'On-press removable quenching overcoat for lithographic plates'19975,599,650'Photoreaction quenchers in on-press developable lithographic printing plates'1997Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–2001Patents assigned to POLAROID CORP (6)· patent assignee history
1997–2019Based in Waltham, MA, US· patent location history
2010–2013Patents assigned to L 1 SECURE CREDENTIALING INC (5)· patent assignee history
2010–2015Patents assigned to LUO FEI (3)· patent assignee history
2011Based in Walthan, MA, US· patent location history
2012–2016Patents assigned to BI DAOSHEN (3)· patent assignee history
2012–2016Patents assigned to JONES ROBERT L (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| POLAROID CORP | 6 | 1997–2001 |
| L 1 SECURE CREDENTIALING INC | 5 | 2010–2013 |
| BI DAOSHEN | 3 | 2012–2016 |
| JONES ROBERT L | 3 | 2012–2016 |
| LUO FEI | 3 | 2010–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Waltham, Massachusetts, US | 19 | 1997–2019 |
| Walthan, Massachusetts, US | 1 | 2011 |