Assignee
SPECTRA GROUP LTD INC
US·19 granted patents·2,302 citations·filing 1992–2001
Top patents by PatentIndex Score
19 records- 0199US5677107AProduction of three-dimensional objectsSPECTRA GROUP LTD INC·Filed 1996·Granted Oct 14, 1997·261 cites·54 claims
- 0299US5514519AProduction of three-dimensional objectsSPECTRA GROUP LTD INC·Filed 1994·Granted May 7, 1996·220 cites·14 claims
- 0398US5451343AFluorone and pyronin y derivativesSPECTRA GROUP LTD INC·Filed 1993·Granted Sep 19, 1995·226 cites·13 claims
- 0497US6433035B1Selectively colorable polymerizable compositionsSPECTRA GROUP LTD INC·Filed 2000·Granted Aug 13, 2002·44 cites·21 claims
- 0595US6309797B1Selectively colorable polymerizable compositionsSPECTRA GROUP LTD INC·Filed 2000·Granted Oct 30, 2001·86 cites·28 claims
- 0694US6211262B1Corrosion resistant, radiation curable coatingSPECTRA GROUP LTD INC·Filed 1999·Granted Apr 3, 2001·152 cites·51 claims
- 0794US6200646B1Method for forming polymeric patterns, relief images and colored polymeric bodies using digital light processing technologySPECTRA GROUP LTD INC·Filed 1999·Granted Mar 13, 2001·206 cites·26 claims
- 0893US5639802ACationic polymerizationSPECTRA GROUP LTD INC·Filed 1993·Granted Jun 17, 1997·91 cites·26 claims
- 0993US5404316ADesktop digital video processing systemSPECTRA GROUP LTD INC·Filed 1992·Granted Apr 4, 1995·594 cites·16 claims
- 1091US5623080AFluorone and pyronin Y derivativesSPECTRA GROUP LTD INC·Filed 1995·Granted Apr 22, 1997·49 cites·20 claims
- 1190US5395862APhotooxidizable initiator composition and photosensitive materials containing the sameSPECTRA GROUP LTD INC·Filed 1992·Granted Mar 7, 1995·67 cites·20 claims
- 1282US5717217AMethod for determining thickness, degree of cure and other properties of a polymeric coatingSPECTRA GROUP LTD INC·Filed 1994·Granted Feb 10, 1998·54 cites·11 claims
- 1380US5942554AMethod for forming highly colored polymeric bodiesSPECTRA GROUP LTD INC·Filed 1996·Granted Aug 24, 1999·53 cites·33 claims
- 1477US5606171AMethod for determining thickness, degree of cure and other properties of a polymeric coating or filmSPECTRA GROUP LTD INC·Filed 1995·Granted Feb 25, 1997·46 cites·15 claims
- 1572US6166233AOnium gallates cationic initiatorsSPECTRA GROUP LTD INC·Filed 1999·Granted Dec 26, 2000·26 cites·9 claims
- 1668US6586494B2Radiation curable inkjet compositionSPECTRA GROUP LTD INC·Filed 2001·Granted Jul 1, 2003·44 cites·27 claims
- 1766US5955002AMethod for determining properties of a polymer coating or film cured by cationic polymerizationSPECTRA GROUP LTD INC·Filed 1997·Granted Sep 21, 1999·36 cites·11 claims
- 1865US6479217B1Method for producing selectively colorable printing platesSPECTRA GROUP LTD INC·Filed 2001·Granted Nov 12, 2002·12 cites·28 claims
- 1960US5998496APhotosensitive intramolecular electron transfer compoundsSPECTRA GROUP LTD INC·Filed 1996·Granted Dec 7, 1999·35 cites·20 claims
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