WOLFF WALSRODE AG

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM1156
 
  
 
C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 1115
 
  
 
G10F AUTOMATIC MUSICAL INSTRUMENTS 16

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6593468 Essentially fiber-free cellulose ether with improved water retention, method for the production and use thereofApr 17, 00Jul 15, 03[G10F]
5077129 Stretched polypropylene films having good surface slipFeb 22, 91Dec 31, 91[C08L, B32B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7022357 Process for the preparation of smoke-impregnated tubular casingsExpiredMay 15, 02Apr 04, 06[A22C]
6780522 Transparent high strength polyamide filmExpiredApr 10, 01Aug 24, 04[B32B]
6740422 High luster, flexible multilayered film with a polyamide outer layer containing nanodispersed filling material and utilization of said film for packaging foodstuffsExpiredApr 09, 01May 25, 04[B32B]
6732493 Method for packaging foodsExpiredMay 16, 03May 11, 04[B65B]
2004/0086,731 Highly transparent thermoformable polyamide filmAbandonedOct 14, 03May 06, 04[B32B]
2004/0039,191 Method for producing highly-substituted carboxyalkyl starchAbandonedApr 04, 03Feb 26, 04[C08B]
2003/0207,136 Highly transparent thermoformable polyamide filmAbandonedMar 16, 01Nov 06, 03[B32B]
6627324 Tough, dimensionally-stable transparent film having a copolyamide layer containing solid nanoscale filling materials with nucleating effect and its use for packaging foodstuffsExpiredApr 10, 01Sep 30, 03[B32B]
6613394 Method of surface treating or coating of materialsExpiredMar 06, 01Sep 02, 03[C08F]
6613407 Multilayered, coextruded, heat-stable deep-drawing foil for packagingExpiredJan 03, 01Sep 02, 03[B32B]
6582828 Deep-drawn slidable foil based on polyolefins and polyamideExpiredJan 09, 01Jun 24, 03[B32B]
6576348 Multilayer film with lamination and heat-sealable sides, and having antifogging propertiesExpiredApr 04, 01Jun 10, 03[B32B]
2003/0097,962 Hydrocolloid composition and dispersion-bound architectural formulations and emulsion paints comprising such compositionsAbandonedJul 23, 02May 29, 03[C09D]
6569538 Symmetrically structured, multi-layered filmExpiredJan 03, 01May 27, 03[B65D, B32B]
6555242 Longitudinally stretched, vacuum vapor coated packaging filmsExpiredJan 24, 01Apr 29, 03[B32B]
6541087 Multilayer, biaxially stretched, high-barrier plastic skinExpiredSep 11, 00Apr 01, 03[B29D, B32B]
6534171 Gas-tight laminating film and packaging material produced therefromExpiredFeb 01, 01Mar 18, 03[B65D, B32B]
6524712 Flexible multilayer filmExpiredApr 04, 01Feb 25, 03[B32B]
6517920 Multilayer, coextruded, biaxially stretched high-barrier plastic casingExpiredSep 11, 00Feb 11, 03[A22C, B32B]
6503617 Multilayer film laminatesExpiredMay 14, 01Jan 07, 03[B32B]

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