CRYSTAL TECHNOLOGY, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS 9124
 
  
 
C30B SINGLE-CRYSTAL GROWTH 155
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 1204
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 1361
 
  
 
H01S DEVICES USING STIMULATED EMISSION191

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7860135 Low loss crystal as a large aperture AO deflectorFeb 24, 09Dec 28, 10[H01S]
7595929 Grooved backside acoustic termination of acousto-optic devicesMay 30, 07Sep 29, 09[G02F]
7580182 Frequency synthesis for acousto-optic devicesJan 30, 08Aug 25, 09[G02F]
7142735 Acousto-optic tunable filter controllerApr 22, 05Nov 28, 06[G02F]
6236492 Electrode with a balanced centroid, soft edges and an apodization ratio greater than oneAug 03, 99May 22, 01[H01L, G02B]
6016216 Polarization-independent acousto-optic tunable filterMay 17, 97Jan 18, 00[G02F]
5909304 Acousto-optic tunable filter based on isotropic acousto-optic diffraction using phased array transducersApr 19, 94Jun 01, 99[G02F]
5742425 Technique for electronically stabilizing the ouputs of acoustooptic devicesJan 23, 97Apr 21, 98[G02F]
5712722 Driver circuit for stabilizing optical outputs of acoustooptic devicesSep 09, 96Jan 27, 98[G02F]
5576880 Acousto-optic bragg cellMar 31, 94Nov 19, 96[G02F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2009/0289,666 Direct digital synthesis frequency synthesizer and associated methodsAbandonedMay 22, 08Nov 26, 09[H03L, H03C]
6424451 Phase array acousto-optic tunable filter based on birefringent diffractionExpiredMay 22, 99Jul 23, 02[G02F]
5854862 Linearized optic modulator with segmented electrodesExpiredMay 29, 97Dec 29, 98[G02F]
5696855 Integrated optic modulator with reduced capacitance electrode configurationExpiredMar 29, 96Dec 09, 97[G02F]
5675673 Integrated optic modulator with segmented electrodes and sloped waveguidesExpiredMar 29, 96Oct 07, 97[G02B, G02F]
5671302 Linearized optic modulator with segmented electrodesExpiredMar 29, 96Sep 23, 97[G02F]
5343827 Method for crystal growth of beta barium borateanExpiredFeb 19, 92Sep 06, 94[C30B]
5193097 Optical device using a cerium-doped KTP crystalExpiredFeb 19, 92Mar 09, 93[H01S]
5133990 Technique for mass production of coded surface acoustic wave devicesExpiredApr 05, 90Jul 28, 92[C23C]
4720177 Tunable acousto-optic filter utilizing internal mode conversionExpiredSep 28, 84Jan 19, 88[G02F]
4661738 Compensation techniques for temperature effects and non-uniform amplitude distributions in saw devicesExpiredSep 26, 85Apr 28, 87[H01L]

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