Merkle Engineers, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C03B MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL 443
 
  
 
F23M CONSTRUCTIONAL DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR 313
 
  
 
F27D DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE 223

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7040241 Refractory brick and refractory constructionMay 24, 02May 09, 06[F23M]
6427610 High temperature industrial furnace roof structureOct 11, 00Aug 06, 02[F23M, F27D]
6349570 In-barrel wetting screw chargerApr 03, 00Feb 26, 02[C03B]
5899151 Industrial furnace roof assembly and components thereofJun 13, 97May 04, 99[F23M]
5558691 Cullet feederSep 13, 94Sep 24, 96[C03B]
5542804 Modular solids chargerAug 25, 94Aug 06, 96[C03B]
5357540 High temperature industrial furnace roof structureAug 28, 92Oct 18, 94[F27D]
5158412 Solids chargerMay 20, 91Oct 27, 92[C03B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5238347 In situ replaceable pusher bar for a batch charger panExpiredNov 27, 91Aug 24, 93[C03B, B65G, F27D]
4960058 Self-positioning refractory structureExpiredOct 26, 89Oct 02, 90[F23M]
4864945 Curved nose refractory constructionExpiredAug 12, 88Sep 12, 89[F23M]
4809621 Refractory brick protection for membrane boiler wallsExpiredApr 14, 88Mar 07, 89[F23M]
4754716 Refractory shield removable toeExpiredMay 15, 87Jul 05, 88[F23M]
4705475 Insulated refractory shieldExpiredApr 25, 86Nov 10, 87[F23M, F27D]
4638617 Refractory curtain wallExpiredOct 19, 84Jan 27, 87[E06B, E04C]
4475470 Suspended roof construction for industrial furnacesExpiredJan 10, 83Oct 09, 84[F23M]
4463689 High temperature furnace nose constructionExpiredJan 07, 82Aug 07, 84[F23M]
4424756 Suspended roof construction for industrial furnacesExpiredFeb 01, 82Jan 10, 84[F23M]

Top Inventors for This Owner

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