HEMLOCK SEMICONDUCTOR CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF772
 
  
 
C30B SINGLE-CRYSTAL GROWTH 551
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 4105
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 3359
 
  
 
B08B CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL 256
 
  
 
C23C COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 299
 
  
 
C23F NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACES 234
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 2204
 
  
 
B02C CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN 134
 
  
 
B07B SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL 120

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9261464 Applying edge-on photoluminescence to measure bulk impurities of semiconductor materialsJun 03, 11Feb 16, 16[G01J, G01N]
9079145 Solids processing valveJun 14, 12Jul 14, 15[F16K, B65G, B01J]
8951352 Manufacturing apparatus for depositing a material and an electrode for use thereinApr 13, 09Feb 10, 15[C23C, C01B, H01L, H05B, H01R, C23F]
8895324 Method of determining an amount of impurities that a contaminating material contributes to high purity siliconApr 10, 12Nov 25, 14[C01B, F27B, F27D, G01R, C30B]
8784565 Manufacturing apparatus for depositing a material and an electrode for use thereinApr 13, 09Jul 22, 14[C23C, H01L, H05B, C23F]
8609058 Silicon production with a fluidized bed reactor integrated into a Siemens-type processMar 21, 11Dec 17, 13[C01B, F27B, B01J]
8021483 Flowable chips and methods for the preparation and use of same, and apparatus for use in the methodsNov 14, 02Sep 20, 11[C30B]
7935327 Silicon production with a fluidized bed reactor integrated into a siemens-type processAug 30, 06May 03, 11[C01B]
7927984 Silicon production with a fluidized bed reactor utilizing tetrachlorosilane to reduce wall depositionNov 05, 08Apr 19, 11[H01L]
7270706 Roll crusher to produce high purity polycrystalline silicon chipsSep 20, 05Sep 18, 07[C30B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0353,147 ELECTRODE FOR USE WITH MANUFACTURING APPARATUSAbandonedAug 15, 14Dec 04, 14[C25D]
2014/0353,290 ELECTRODE FOR USE WITH A MANUFACTURING APPARATUS FOR DEPOSITING A MATERIALAbandonedAug 12, 14Dec 04, 14[B23K]
2014/0225,030 METHOD OF CONTROLLING THE CRYSTALLINITY OF A SILICON POWDERAbandonedFeb 13, 14Aug 14, 14[C01B]
2014/0220,347 ELECTRODE COMPOSITION COMPRISING A SILICON POWDER AND METHOD OF CONTROLLING THE CRYSTALLINITY OF A SILICON POWDERAbandonedAug 14, 12Aug 07, 14[C01B, H01M]
2012/0199,068 MANUFACTURING APPARATUS FOR DEPOSITING A MATERIAL AND AN ELECTRODE FOR USE THEREINAbandonedOct 08, 10Aug 09, 12[C23C, H01B]
2012/0199,069 CVD APPARATUSAbandonedOct 08, 10Aug 09, 12[C23C, H01B]
2012/0114,860 METHOD OF INHIBITING FORMATION OF DEPOSITS IN A MANUFACTURING SYSTEMAbandonedJul 14, 10May 10, 12[B05D]
2012/0070,362 QUANTITATIVE MEASUREMENT OF GAS PHASE PROCESS INTERMEDIATES USING RAMAN SPECTROSCOPYAbandonedMay 11, 10Mar 22, 12[C01B, G01N]
2011/0250,116 Process for Producing Trichlorosilane and TetrachlorosilaneAbandonedNov 17, 09Oct 13, 11[C01B]
2011/0228,268 Method Of Analyzing A Composition Containing ImpuritiesAbandonedNov 16, 09Sep 22, 11[G01J, G01N]
2011/0036,292 Manufacturing Apparatus For Depositing A Material And An Electrode For Use ThereinAbandonedApr 13, 09Feb 17, 11[C23C]
2004/0173,597 Apparatus for contacting gases at high temperatureAbandonedMar 03, 03Sep 09, 04[F27B]
6605149 Method of stacking polycrystalline silicon in process for single crystal productionExpiredJan 11, 02Aug 12, 03[C30B]
2002/0187,096 Process for preparation of polycrystalline siliconAbandonedJun 08, 01Dec 12, 02[C01B]
5529935 Method for determining organoamines concentrations in chlorosilaneExpiredMay 17, 95Jun 25, 96[G01N]
5411282 System for guiding apparatus over a surfaceExpiredMar 04, 94May 02, 95[A63C]
5361128 Method for analyzing irregular shaped chunked silicon for contaminatesExpiredSep 10, 92Nov 01, 94[G01N]
5232602 Phosphorous removal from tetrachlorosilaneExpiredJul 01, 92Aug 03, 93[B01D]
5165548 Rotary silicon screenExpiredJun 03, 91Nov 24, 92[B07B]
5118485 Recovery of lower-boiling silanes in a CVD processExpiredMar 25, 88Jun 02, 92[C01B]

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