STEMCOR CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 167

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
RE30286 Method of producing high density silicon carbide productMar 19, 79May 27, 80[C04B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5202105 Method for making hexagonal silicon carbide platelets with the addition of a growth additiveExpiredJul 05, 90Apr 13, 93[C01B]
5002905 Hexagonal silicon carbide platelets and preforms and methods for making and using sameExpiredApr 22, 88Mar 26, 91[C04B]
4990765 Method and means for processing an analog signal from a diode arrayExpiredNov 22, 89Feb 05, 91[H01J]
4981665 Hexagonal silicon carbide platelets and preforms and methods for making and using sameExpiredApr 22, 88Jan 01, 91[C01B]
4930986 Apparatus for immersing solids into fluids and moving fluids in a linear directionExpiredJul 10, 84Jun 05, 90[B63H]
4925609 Oxygen-sensing elementExpiredApr 18, 88May 15, 90[C04B]
4910412 Light biased photoresponsive arrayExpiredApr 17, 89Mar 20, 90[H01J]
4908340 Non-oxide sintered ceramic fibersExpiredJul 16, 87Mar 13, 90[C04B]
4871108 Silicon carbide-to-metal joint and method of making sameExpiredNov 16, 87Oct 03, 89[B23K]
4798764 Arsenate dopant sources and method of making the sourcesExpiredJun 08, 83Jan 17, 89[B05D, B32B]
4795673 Composite material of discontinuous silicon carbide particles and continuous silicon matrix and method of producing sameExpiredOct 28, 86Jan 03, 89[C04B]
4790986 Method and apparatus to produce a hot fluidizing gasExpiredOct 15, 86Dec 13, 88[C01B]
4791077 Near net shape fused cast refractories and process for their manufacture by rapid melting/controlled rapid coolingExpiredFeb 04, 86Dec 13, 88[C04B]
4785191 Interconnected array of photosensors for simultaneously sensing light intensities at each of a number of locationsExpiredApr 17, 87Nov 15, 88[H01L]
4775393 Autogenous attrition grindingExpiredMay 30, 86Oct 04, 88[B24D]
4772335 Photovoltaic device responsive to ultraviolet radiationExpiredOct 15, 87Sep 20, 88[H01L]
4764261 Method of making improved photovoltaic heterojunction structuresExpiredNov 23, 87Aug 16, 88[C25D, H01L]
4756895 Hexagonal silicon carbide platelets and preforms and methods for making and using sameExpiredAug 22, 86Jul 12, 88[C01B]
4749615 Semiconductor dopant sourceExpiredOct 31, 86Jun 07, 88[H01L, B32B]
4740288 Oxygen-sensing elementExpiredMar 02, 87Apr 26, 88[G01N]

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