Assignee
US NATIONAL SECURITY AGENCY
US·107 granted patents·3,289 citations·filing 1933–2009
Top patents by PatentIndex Score
107 records- 0196US6331991B1Transmission system using a semiconductor laser and a fiber grating discriminatorUS NATIONAL SECURITY AGENCY·Filed 1999·Granted Dec 18, 2001·138 cites·17 claims
- 0294US7676046B1Method of removing noise and interference from signalUS NATIONAL SECURITY AGENCY·Filed 2005·Granted Mar 9, 2010·32 cites·12 claims
- 0393US5937422AAutomatically generating a topic description for text and searching and sorting text by topic using the sameUS NATIONAL SECURITY AGENCY·Filed 1997·Granted Aug 10, 1999·405 cites·31 claims
- 0491US6922774B2Device for and method of secure computing using virtual machinesUS NATIONAL SECURITY AGENCY·Filed 2001·Granted Jul 26, 2005·183 cites·14 claims
- 0590US6130946ACryptographsUS NATIONAL SECURITY AGENCY·Filed 1936·Granted Oct 10, 2000·7 cites·5 claims
- 0689US7232740B1Method for bumping a thin waferUS NATIONAL SECURITY AGENCY·Filed 2005·Granted Jun 19, 2007·22 cites·22 claims
- 0789US6013534AMethod of thinning integrated circuits received in die formUS NATIONAL SECURITY AGENCY·Filed 1997·Granted Jan 11, 2000·124 cites·24 claims
- 0887US7297613B1Method of fabricating and integrating high quality decoupling capacitorsUS NATIONAL SECURITY AGENCY·Filed 2005·Granted Nov 20, 2007·16 cites·24 claims
- 0986US7201410B1Reusable tamper evident security deviceUS NATIONAL SECURITY AGENCY·Filed 2005·Granted Apr 10, 2007·16 cites·20 claims
- 1083US7283015B1Device for impedance matching radio frequency open wire transmission linesUS NATIONAL SECURITY AGENCY·Filed 2005·Granted Oct 16, 2007·17 cites·1 claims
- 1183US7020338B1Method of identifying script of line of textUS NATIONAL SECURITY AGENCY·Filed 2002·Granted Mar 28, 2006·95 cites·17 claims
- 1283US6701049B1Optical clock recovery device using non-linear optical waveguidesUS NATIONAL SECURITY AGENCY·Filed 2003·Granted Mar 2, 2004·35 cites·12 claims
- 1382US6298144B1Device for and method of detecting motion in an imageUS NATIONAL SECURITY AGENCY·Filed 1998·Granted Oct 2, 2001·133 cites·14 claims
- 1482US6175625B1Control circuits for electric coding machinesUS NATIONAL SECURITY AGENCY·Filed 1944·Granted Jan 16, 2001·20 cites·21 claims
- 1581US7062043B1Method of elliptic curve digital signature using coefficient splittingUS NATIONAL SECURITY AGENCY·Filed 2002·Granted Jun 13, 2006·38 cites·18 claims
- 1681US6026053APhotorefractive read-only optical memory apparatus using phase, frequency, and angular modulationUS NATIONAL SECURITY AGENCY·Filed 1999·Granted Feb 15, 2000·56 cites·6 claims
- 1779US7062044B1Method of elliptic curve cryptographic key agreement using coefficient splittingUS NATIONAL SECURITY AGENCY·Filed 2002·Granted Jun 13, 2006·33 cites·28 claims
- 1879US7010167B1Method of geometric linear discriminant analysis pattern recognitionUS NATIONAL SECURITY AGENCY·Filed 2002·Granted Mar 7, 2006·63 cites·42 claims
- 1979US6829355B2Device for and method of one-way cryptographic hashingUS NATIONAL SECURITY AGENCY·Filed 2001·Granted Dec 7, 2004·72 cites·19 claims
- 2079US5835912AMethod of efficiency and flexibility storing, retrieving, and modifying data in any language representationUS NATIONAL SECURITY AGENCY·Filed 1997·Granted Nov 10, 1998·119 cites·15 claims
- 2178US6519362B1Method of extracting text present in a color imageUS NATIONAL SECURITY AGENCY·Filed 2000·Granted Feb 11, 2003·49 cites·16 claims
- 2277US7380224B2Method and system for non-linear state based satisfiabilityUS NATIONAL SECURITY AGENCY·Filed 2005·Granted May 27, 2008·12 cites·8 claims
- 2376US7129742B1Majority logic circuitUS NATIONAL SECURITY AGENCY·Filed 2005·Granted Oct 31, 2006·11 cites·2 claims
- 2475US7320937B1Method of reliably electroless-plating integrated circuit dieUS NATIONAL SECURITY AGENCY·Filed 2005·Granted Jan 22, 2008·18 cites·13 claims
- 2575US6820830B1Shredder residue dispersion systemUS NATIONAL SECURITY AGENCY·Filed 2002·Granted Nov 23, 2004·17 cites·8 claims
- 2675US6493366B1Vertical cavity surface emitting laser with oxidized strain-compensated superlattice of group III-V semiconductorUS NATIONAL SECURITY AGENCY·Filed 2000·Granted Dec 10, 2002·15 cites·14 claims
- 2775US5991714AMethod of identifying data type and locating in a fileUS NATIONAL SECURITY AGENCY·Filed 1998·Granted Nov 23, 1999·107 cites·17 claims
- 2874US6898284B2Cryptographic identification and digital signature method using efficient elliptic curveUS NATIONAL SECURITY AGENCY·Filed 2001·Granted May 24, 2005·22 cites·5 claims
- 2974US6243467B1Method of elliptic curve cryptographic digital signature generation and verification using reduced base tau expansion in non-adjacent formUS NATIONAL SECURITY AGENCY·Filed 1998·Granted Jun 5, 2001·86 cites·30 claims
- 3073US7272245B1Method of biometric authenticationUS NATIONAL SECURITY AGENCY·Filed 2004·Granted Sep 18, 2007·37 cites·27 claims
- 3173US6718038B1Cryptographic method using modified fractional fourier transform kernelUS NATIONAL SECURITY AGENCY·Filed 2000·Granted Apr 6, 2004·36 cites·4 claims
- 3273US6151427ATunable optic fiber bandpass filter using flexural acoustic wavesUS NATIONAL SECURITY AGENCY·Filed 1999·Granted Nov 21, 2000·44 cites·24 claims
- 3373US5841536APolarization interferometer apparatus using the polarization dependent phase lag in a birefringent retarderUS NATIONAL SECURITY AGENCY·Filed 1997·Granted Nov 24, 1998·46 cites·5 claims
- 3473US5832478AMethod of searching an on-line dictionary using syllables and syllable countUS NATIONAL SECURITY AGENCY·Filed 1997·Granted Nov 3, 1998·63 cites·9 claims
- 3572US7127392B1Device for and method of detecting voice activityUS NATIONAL SECURITY AGENCY·Filed 2003·Granted Oct 24, 2006·20 cites·14 claims
- 3671US6560745B1Method of identifying boundary of markerless codewordUS NATIONAL SECURITY AGENCY·Filed 2000·Granted May 6, 2003·14 cites·4 claims
- 3770US7024559B1Method of elliptic curve digital signature using expansion in joint sparse formUS NATIONAL SECURITY AGENCY·Filed 2002·Granted Apr 4, 2006·17 cites·12 claims
- 3869US6993136B2Cryptographic key exchange method using efficient elliptic curveUS NATIONAL SECURITY AGENCY·Filed 2001·Granted Jan 31, 2006·16 cites·1 claims
- 3969US6904564B1Method of summarizing text using just the textUS NATIONAL SECURITY AGENCY·Filed 2002·Granted Jun 7, 2005·25 cites·13 claims
- 4068US7715996B1Method of estimating digital signal frequencyUS NATIONAL SECURITY AGENCY·Filed 2007·Granted May 11, 2010·6 cites·14 claims
- 4168US7346311B1Single frequency repeaterUS NATIONAL SECURITY AGENCY·Filed 2005·Granted Mar 18, 2008·7 cites·4 claims
- 4268US6647159B1Tension-tuned acousto-optic bandpass filterUS NATIONAL SECURITY AGENCY·Filed 2002·Granted Nov 11, 2003·12 cites·14 claims
- 4368US6577968B2Method of estimating signal frequencyUS NATIONAL SECURITY AGENCY·Filed 2001·Granted Jun 10, 2003·15 cites·18 claims
- 4468US6556967B1Voice activity detectorUS NATIONAL SECURITY AGENCY·Filed 1999·Granted Apr 29, 2003·66 cites·12 claims
- 4567US7678593B1Method of fabricating optical device using multiple sacrificial spacer layersUS NATIONAL SECURITY AGENCY·Filed 2006·Granted Mar 16, 2010·2 cites·6 claims
- 4666US7092524B1Device for and method of cryptographically wrapping informationUS NATIONAL SECURITY AGENCY·Filed 2002·Granted Aug 15, 2006·27 cites·16 claims
- 4766US6941013B1Method of image binarization using histogram modelingUS NATIONAL SECURITY AGENCY·Filed 2002·Granted Sep 6, 2005·30 cites·13 claims
- 4865US6017822AMethod of thinning semiconductor wafer of smaller diameter than thinning equipment was designed forUS NATIONAL SECURITY AGENCY·Filed 1998·Granted Jan 25, 2000·33 cites·15 claims
- 4964US7350689B1Reusable tamper evident envelopeUS NATIONAL SECURITY AGENCY·Filed 2004·Granted Apr 1, 2008·16 cites·31 claims
- 5064US7128476B1Photonic integrated circuit and method of fabricating sameUS NATIONAL SECURITY AGENCY·Filed 2004·Granted Oct 31, 2006·11 cites·29 claims
Showing the top 50 of 107 patent records by PatentIndex Score.
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