Assignee
ANGSTROM TECHNOLOGIES INC
US·16 granted patents·1 pending application·1,623 citations·filing 1993–2013
Top patents by PatentIndex Score
17 records- 0197US6373965B1Apparatus and methods for authentication using partially fluorescent graphic images and OCR charactersANGSTROM TECHNOLOGIES INC·Filed 1999·Granted Apr 16, 2002·308 cites·26 claims
- 0297US5719948AApparatus and methods for fluorescent imaging and optical character readingANGSTROM TECHNOLOGIES INC·Filed 1994·Granted Feb 17, 1998·247 cites·6 claims
- 0396US5867586AApparatus and methods for fluorescent imaging and optical character readingANGSTROM TECHNOLOGIES INC·Filed 1997·Granted Feb 2, 1999·256 cites·17 claims
- 0496US5605738ATamper resistant system using ultraviolet fluorescent chemicalsANGSTROM TECHNOLOGIES INC·Filed 1993·Granted Feb 25, 1997·109 cites·24 claims
- 0595US5414258AApparatus and method for calibration of fluorescence detectorsANGSTROM TECHNOLOGIES INC·Filed 1993·Granted May 9, 1995·159 cites·34 claims
- 0689US7821675B2Methods and ink compositions for invisibly printed security images having multiple authentication featuresANGSTROM TECHNOLOGIES INC·Filed 2004·Granted Oct 26, 2010·19 cites·64 claims
- 0788US5548106AMethods and apparatus for authenticating data storage articlesANGSTROM TECHNOLOGIES INC·Filed 1994·Granted Aug 20, 1996·117 cites·46 claims
- 0888US5418855AAuthentication system and methodANGSTROM TECHNOLOGIES INC·Filed 1993·Granted May 23, 1995·125 cites·27 claims
- 0987US5666417AFluorescence authentication reader with coaxial opticsANGSTROM TECHNOLOGIES INC·Filed 1996·Granted Sep 9, 1997·107 cites·9 claims
- 1085US5574790AFluorescence authentication reader with coaxial opticsANGSTROM TECHNOLOGIES INC·Filed 1995·Granted Nov 12, 1996·88 cites·34 claims
- 1183US9104126B2Stable emissive toner composition system and methodANGSTROM TECHNOLOGIES INC·Filed 2013·Granted Aug 11, 2015·2 cites·31 claims
- 1282US6603871B2First-order authentication systemANGSTROM TECHNOLOGIES INC·Filed 2001·Granted Aug 5, 2003·41 cites·23 claims
- 1381US8717625B2Emissive image substrate marking, articles marked with an emissive image, and authentication methods involving the sameANGSTROM TECHNOLOGIES INC·Filed 2012·Granted May 6, 2014·2 cites·20 claims
- 1479US6470093B2First-order authentication systemANGSTROM TECHNOLOGIES INC·Filed 2001·Granted Oct 22, 2002·34 cites·44 claims
- 1556US2011267656A1Emissive Image Substrate Marking, Articles Marked With An Emissive Image, and Authentication Methods Involving The SameANGSTROM TECHNOLOGIES INC·Filed 2010·Application pending·0 cites
- 1640US5923024AApparatus and methods for controlling sensor signal hysteresisANGSTROM TECHNOLOGIES INC·Filed 1997·Granted Jul 13, 1999·8 cites·27 claims
- 1733USD453175SMoney checkerANGSTROM TECHNOLOGIES INC·Filed 2001·Granted Jan 29, 2002·1 cites·1 claims
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