COHERENT GMBH

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01S DEVICES USING STIMULATED EMISSION5243
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 3202
 
  
 
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 2131
 
  
 
G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR 295
 
  
 
B23K SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 192
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS198
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1205
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 1361

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8948220 Wavelength-stabilized microcrystal laserDec 18, 12Feb 03, 15[H01S]
8937770 Excimer laser apparatus projecting a beam with a selectively variable short-axis beam profileJul 24, 12Jan 20, 15[H01L, B23K, G02B]
8848751 Short-pulsed compact MOPAFeb 27, 13Sep 30, 14[H01S]
8761213 Wavelength-stabilized frequency-converted optically pumped semiconductor laserOct 01, 12Jun 24, 14[H01S]
8482846 Advanced shifting algorithm for prolonging the life of an optically nonlinear crystalAug 09, 10Jul 09, 13[G02F]
8411721 High-precision synchronization of pulsed gas-discharge lasersJul 02, 12Apr 02, 13[H01S]
8351477 Modulation method for diode-laser pumped lasersJul 22, 10Jan 08, 13[H01S]
8265117 Bandwidth-limited and long pulse master oscillator power oscillator laser systemsJun 11, 10Sep 11, 12[H01S]
8238400 High-precision synchronization of pulsed gas-discharge lasersAug 09, 10Aug 07, 12[H01S]
8192790 Electrodes for generating a stable discharge in gas laser systemsJun 02, 10Jun 05, 12[H01S]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0034,118 GAS PURIFIER FOR AN EXCIMER LASERAbandonedAug 04, 11Feb 07, 13[H01S]
2012/0260,847 AMORPHOUS SILICON CRYSTALLIZATION USING COMBINED BEAMS FROM MULTIPLE OSCILLATORSAbandonedAug 31, 11Oct 18, 12[C30B]
2012/0057,608 INTRA-CAVITY SUM-FREQUENCY MIXING USING SOLID-STATE AND SEMICONDUCTOR GAIN-MEDIAAbandonedSep 08, 10Mar 08, 12[H01S]
2010/0278,200 EXTERNAL FREQUENCY-QUADRUPED 1064 NM MODE-LOCKED LASERAbandonedMay 04, 09Nov 04, 10[H01S]
2010/0271,704 DEVICE AND METHOD FOR BEAM FORMING A HOMOGENIZED LIGHT BEAMAbandonedNov 18, 08Oct 28, 10[G02B]
2009/0003,801 Method and system for optical characterization of optical crystallizationAbandonedJun 28, 07Jan 01, 09[H04N]
7336691 Apparatus for combining beams from repetitively pulsed lasers along a common pathExpiredMar 22, 06Feb 26, 08[H01S]
7254156 Line-narrowed dye laserExpiredJan 19, 05Aug 07, 07[H01S]
7088450 Method and apparatus for measuring amplified stimulated emission in the output of a master oscillator power amplifier systemExpiredMar 23, 04Aug 08, 06[G01B]
7075963 Tunable laser with stabilized gratingExpiredJan 25, 01Jul 11, 06[H01S]
7006541 Absolute wavelength calibration of lithography laser using multiple element or tandem see through hollow cathode lampExpiredJan 29, 03Feb 28, 06[H01S]
6999492 Reduced-maintenance excimer laser with oil-free solid state pulserExpiredNov 14, 03Feb 14, 06[H01S]
6898216 Reduction of laser speckle in photolithography by controlled disruption of spatial coherence of laser beamExpiredMay 19, 00May 24, 05[H01S]
6868106 Resonator optics for high power UV lasersExpiredOct 31, 01Mar 15, 05[H01S]
6862307 Electrical excitation circuit for a pulsed gas laserExpiredMay 14, 01Mar 01, 05[H01S]
6856638 Resonator arrangement for bandwidth controlExpiredOct 19, 01Feb 15, 05[H01S]
6839375 On-line quality control of the key optical components in lithography lasers using laser induced fluorescenceExpiredSep 04, 02Jan 04, 05[H01J, G01N, H01S]
6834069 Molecular fluorine laser with intracavity polarization enhancerExpiredJun 03, 02Dec 21, 04[H01S]
6822977 Method and apparatus for compensation of beam property drifts detected by measurement systems outside of an excimer laserExpiredJun 06, 02Nov 23, 04[H01S]
6819698 Energy monitor for F2 molecular fluorine laser and method of energy stabilizationExpiredFeb 24, 00Nov 16, 04[H01S]

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