Assignee
SPECTRA SCIENCE CORP
US18 patents
Top patents by PatentIndex Score
US5882779AMar 16, 1999
Semiconductor nanocrystal display materials and display apparatus employing same
SPECTRA SCIENCE CORP256 citations99
US6259506B1Jul 10, 2001
Field activated security articles including polymer dispersed liquid crystals, and including micro-encapsulated field affected materials
SPECTRA SCIENCE CORP110 citations98
US6578712B2Jun 17, 2003
Methods and apparatus employing multi-spectral imaging for the remote identification and sorting of objects
SPECTRA SCIENCE CORP56 citations96
US6296189B1Oct 2, 2001
Methods and apparatus employing multi-spectral imaging for the remote identification and sorting of objects
SPECTRA SCIENCE CORP46 citations96
US6047964AApr 11, 2000
Scratch card, and method and apparatus for validation of the same
SPECTRA SCIENCE CORP57 citations96
US6832783B2Dec 21, 2004
Optically-based methods and apparatus for performing sorting, coding and authentication using a gain medium that provides a narrowband emission
SPECTRA SCIENCE CORP28 citations93
US6633370B2Oct 14, 2003
Quantum dots, semiconductor nanocrystals and semiconductor particles used as fluorescent coding elements
SPECTRA SCIENCE CORP52 citations93
US6100973AAug 8, 2000
Methods and apparatus for performing microanalytical techniques using photolithographically fabricated substrates having narrow band optical emission capability
SPECTRA SCIENCE CORP49 citations93
US6030411AFeb 29, 2000
Photoemitting catheters and other structures suitable for use in photo-dynamic therapy and other applications
SPECTRA SCIENCE CORP29 citations93
US5851225ADec 22, 1998
Photoemitting catheters and other structures suitable for use in photo-dynamic therapy and other applications
SPECTRA SCIENCE CORP30 citations93
US5845640ADec 8, 1998
Chemiluminescent sources for photodynamic therapy and photomedicine
SPECTRA SCIENCE CORP34 citations93
US5908608AJun 1, 1999
Synthesis of metal chalcogenide quantum
SPECTRA SCIENCE CORP31 citations92
US6064476AMay 16, 2000
Self-targeting reader system for remote identification
SPECTRA SCIENCE CORP37 citations89
US6233481B1May 15, 2001
Diagnostic application of sono-chemical excitation of fluorescent photosensitizers
SPECTRA SCIENCE CORP15 citations84
US6370216B1Apr 9, 2002
Thickness sensor suitable for detecting a presence of a plurality of items, such as currency
SPECTRA SCIENCE CORP12 citations74
US6254596B1Jul 3, 2001
Solid state source for generating intense light for photomedicine
SPECTRA SCIENCE CORP12 citations74
US6088380AJul 11, 2000
Method and apparatus for intracavity pixelated lasing projection
SPECTRA SCIENCE CORP14 citations74
US5793781AAug 11, 1998
Solid state source for generating intense light for photodynamic therapy and photomedicine
SPECTRA SCIENCE CORP2 citations63