DIAFOIL HOECHST COMPANY, LIMITED

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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, FORM22135
 
  
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 5133
 
  
 
B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 3122
 
  
 
H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 363
 
  
 
C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 2118
 
  
 
B05D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 186
 
  
 
B23B TURNING; BORING 151
 
  
 
B29B PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS 126
 
  
 
B29K INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS 130
 
  
 
C08J WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER- TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C C08F, C08G or C08H 177

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5863641 Polyester film for sublimation type thermal transfer printingMar 28, 97Jan 26, 99[B32B]
5833905 Process for producing polyester compositionAug 29, 97Nov 10, 98[B29C]
5824394 Biaxially oriented laminated polyester filmDec 11, 95Oct 20, 98[B32B]
5738926 Metallized polyester film capacitorNov 23, 92Apr 14, 98[H01G]
5670236 Biaxially oriented polyester film for magnetic recording mediumJun 07, 95Sep 23, 97[B32B]
5648159 Dry resistJun 12, 95Jul 15, 97[B32B]
5540974 Metallized polyester film capacitorDec 13, 93Jul 30, 96[B32B, H01G]
5532049 Magnetic recording medium having a calendered polyester layer with a specified deformation ratioOct 25, 94Jul 02, 96[G11B]
5514462 Polyester film comprising a mixture of polyesters for highly heat sensitive original sheet for stencil printingAug 16, 94May 07, 96[B23B]
5510192 Polyethylene naphthalate multilayered film for high density magnetic recording mediumJul 01, 92Apr 23, 96[G11B, B32B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5612115 Metal-deposited polyester film capacitorExpiredMay 04, 95Mar 18, 97[B32B]
5527594 Optical tapeExpiredDec 04, 92Jun 18, 96[B32B]
5459019 Optical tapeExpiredApr 28, 94Oct 17, 95[G11B]
5419942 Base film of digital compact cassette tapeExpiredJan 14, 93May 30, 95[B32B]
5401558 Biaxially oriented polyester film for capacitor dielectricExpiredApr 06, 93Mar 28, 95[B32B, H01G]
5366783 Laminated polyester film for magnetic tape having specific surface propertiesExpiredMar 05, 92Nov 22, 94[D06N, B32B]
5324583 Thermal transfer sheetExpiredDec 17, 92Jun 28, 94[B41M]
5318833 Polyester film comprising specific porous silica particlesExpiredMar 25, 92Jun 07, 94[B32B]
5314736 Polyethylene terephthalate film for magnetic recording medium containing three different kinds of particlesExpiredFeb 21, 92May 24, 94[D07N]
5279881 Laminated polyester film for magnetic recording medium comprising specific particlesExpiredSep 03, 92Jan 18, 94[B32B]
5188891 Magnetic recording medium comprising a polyester film substrate, a magnetic coating and a specified back coat layerExpiredJun 25, 91Feb 23, 93[G11B]
5106681 Polyester films, magnetic recording media and film capacitors produced therefromExpiredOct 12, 89Apr 21, 92[G11B]
5093064 Low-shrinkage polyester film and preparation thereofExpiredJun 11, 90Mar 03, 92[C08G, B29C]
5082730 Stretched polyester film having an antistatic coating comprising a polymer having pyrrolidium rings in the main chainExpiredDec 02, 88Jan 21, 92[C07D, B32B]
5023291 Polyester compositionExpiredJul 13, 89Jun 11, 91[C08G, C08K]
5006589 Polyester film for magnetic recording mediaExpiredJun 02, 89Apr 09, 91[C08K]
4990400 Polyester films, magnetic recording media and film capacitors produced therefromExpiredOct 12, 89Feb 05, 91[G11B]
4985537 Process of making a biaxially stretched polyester film and biaxially stretched polyester filmExpiredApr 13, 89Jan 15, 91[C08G, B29C]
4985538 Shrinkable polyester filmExpiredNov 12, 87Jan 15, 91[C08G]
4983653 Polyester shrinkable film containing benzotriazoleExpiredApr 06, 89Jan 08, 91[C08G, C08K]

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