Karrena GmbH

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 151

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5810075 Heat-insulating lining on heat exchanger surfacesOct 31, 97Sep 22, 98[F28F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5247860 Farm tool and method for the production theoryExpiredAug 28, 91Sep 28, 93[B21D]
4463690 Furnace chamber lining structureExpiredJun 18, 82Aug 07, 84[F23M]
4437864 Plant with a reactor container, particularly for the gasification of fossil fuelsExpiredNov 09, 81Mar 20, 84[C10J]
4216709 ChimneyExpiredDec 14, 78Aug 12, 80[F23L, E04F]

Top Inventors for This Owner

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