A. AHLSTROM CORPORATION

Patent Owner

Stats

95 total patents issued
40 Total Apps Published
May 10, 2012 most recent publication

Details

95 Issued Patents
6 Issued in last 3 years
18 Published in last 3 years

610 Total Citation Count
Sep 15, 1981 Earliest Filing
83 Expired/Abandoned Patents

Technologies

B01D SEPARATION 40.02

D04H MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL 30.23

B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 20.01

B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM20.01

D01D MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES, OR RIBBONS10.15

D02G CRIMPING OR CURLING FIBRES, FILAMENTS, YARNS, OR THREADS; YARNS OR THREADS10.06

D21C PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR10.12

D21F PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON10.06

F22D PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER; FEED-WATER SUPPLY; CONTROLLING WATER LEVEL; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN BOILERS 11.41

F22G SUPERHEATING OF STEAM 12.70

		# of Patents	% of Class
B01D	SEPARATION
	Owner Portfolio	4	0.02
	DONALDSON COMPANY, INC.	259	1.15
	PALL CORPORATION	209	0.93
	3M INNOVATIVE PROPERTIES COMPANY	190	0.84
	AIR PROD & CHEM INC	189	0.84
	AGILENT TECHNOLOGIES, INC.	186	0.83
D04H	MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL
	Owner Portfolio	3	0.23
	KIMBERLY-CLARK WORLDWIDE, INC.	126	9.47
	E I DU PONT DE NEMOURS & CO	44	3.31
	POLYMER GROUP, INC.	40	3.01
	PROCTER & GAMBLE CO	40	3.01
	UNI-CHARM CORPORATION	38	2.86
B29C	SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
	Owner Portfolio	2	0.01
	HUSKY INJECTION MOLDING SYSTEMS LTD.	304	1.95
	4437667 CANADA INC.	174	1.12
	3M INNOVATIVE PROPERTIES COMPANY	168	1.08
	FUJIFILM CORPORATION	131	0.84
	3D SYSTEMS, INC.	127	0.82
B32B	LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
	Owner Portfolio	2	0.01
	3M INNOVATIVE PROPERTIES COMPANY	847	2.53
	E I DU PONT DE NEMOURS & CO	512	1.53
	KIMBERLY-CLARK WORLDWIDE, INC.	499	1.49
	GENERAL ELECTRIC COMPANY	400	1.19
	PROCTER & GAMBLE CO	371	1.11
D01D	MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES, OR RIBBONS
	Owner Portfolio	1	0.15
	E I DU PONT DE NEMOURS & CO	60	8.88
	INVISTA NORTH AMERICA S.A.R.L.	42	6.21
	KIMBERLY-CLARK WORLDWIDE, INC.	26	3.85
	HONEYWELL INTERNATIONAL INC.	18	2.66
	REIFENHAUSER GMBH & CO MASCHFAB	14	2.07
D02G	CRIMPING OR CURLING FIBRES, FILAMENTS, YARNS, OR THREADS; YARNS OR THREADS
	Owner Portfolio	1	0.06
	E I DU PONT DE NEMOURS & CO	85	5.21
	INVISTA NORTH AMERICA S.A.R.L.	73	4.48
	TORAY INDUSTRIES, INC.	36	2.21
	KIMBERLY-CLARK WORLDWIDE, INC.	29	1.78
	TEIJIN LIMITED	28	1.72
D21C	PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
	Owner Portfolio	1	0.12
	ANDRITZ INC.	53	6.58
	METSO PAPER SWEDEN AKTIEBOLAG	53	6.58
	INTERNATIONAL PAPER COMPANY	25	3.11
	GLV FINANCE HUNGARY KFT., ACTING THROUGH ITS LUXEMBOURG BRANCH	22	2.73
	METSO FIBER KARLSTAD AB	21	2.61
D21F	PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
	Owner Portfolio	1	0.06
	METSO PAPER, INC.	185	11.35
	VOITH PAPER PATENT GMBH	158	9.69
	KIMBERLY-CLARK WORLDWIDE, INC.	115	7.06
	ALBANY INTERNATIONAL CORP.	102	6.26
	PROCTER & GAMBLE CO	61	3.74
F22D	PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER; FEED-WATER SUPPLY; CONTROLLING WATER LEVEL; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN BOILERS
	Owner Portfolio	1	1.41
	ALSTOM TECHNOLOGY LTD	5	7.04
	KABUSHIKI KAISHA TOSHIBA	4	5.63
	SIEMENS AKTIENGESELLSCHAFT	3	4.23
	BABCOCK & WILCOX POWER GENERATION GROUP INC	3	4.23
	EATON-WILLIAMS GROUP LIMITED	3	4.23
F22G	SUPERHEATING OF STEAM
	Owner Portfolio	1	2.70
	SIEMENS AKTIENGESELLSCHAFT	7	18.92
	KVAERNER POWER OY	3	8.11
	BABCOCK & WILCOX POWER GENERATION GROUP INC	3	8.11
	PRAXAIR TECHNOLOGY, INC.	1	2.70
	NIPPON FURNACE KOGYO KABUSHIKI KAISHA	1	2.70

Top Patents (by citation)

5,110,332 Filter for filtration of particles from a hot gas flowApr 03, 91May 05, 92[B01D]50

4,874,656 Multi-layer packaging materialApr 27, 88Oct 17, 89[B32B]26

4,769,111 Support apparatus for a dewatering unit in the web forming section of a paper machineJul 02, 87Sep 06, 88[D21F]25

4,699,068 Apparatus for separating solids from flue gases in a circulating fluidized bed reactorSep 22, 86Oct 13, 87[F23J]23

4,971,658 Method of intensifying the washing of a fiber suspensionJun 08, 89Nov 20, 90[D21C, D21B]19

4,732,113 Particle separatorMar 09, 87Mar 22, 88[F22B]19

5,246,541 Evaporator for liquid solutionsMay 14, 91Sep 21, 93[B01D]17

4,925,526 Tube-type evaporatorOct 03, 88May 15, 90[B01D]16

4,664,887 Apparatus for separating solid material in a circulating fluidized bed reactorMay 14, 85May 12, 87[B01J]15

4,753,177 Fluidized bed reactorApr 30, 87Jun 28, 88[F23H]14

Recent Publications

2012/0111,519 FIBROUS SUPPORT INTENDED TO BE IMPREGNATED WITH LIQUIDJan 17, 12May 10, 12[D21F]

2012/0100,097 CELLULOSE SUPPORT CONTAINING D-MANNOSE DERIVATIVESApr 23, 10Apr 26, 12[A01N, A01P, C08F]

2012/0043,281 SEPARATION MEDIA AND METHODS ESPECIALLY USEFUL FOR SEPARATING WATER-HYDROCARBON EMULSIONS HAVING LOW INTERFACIAL TENSIONSOct 27, 11Feb 23, 12[B01D]

2011/0300,332 ACOUSTIC TILEMay 17, 09Dec 08, 11[E04B]

2011/0220,309 METHOD OF MANUFACTURING RESINOUS PAPERS, RESINOUS PAPERS, AND THEIR USE AS RESINOUS PREFORM BLANKSMay 27, 09Sep 15, 11[D21H]

2011/0147,299 COALESCENCE MEDIA FOR SEPARATION OF WATER-HYDROCARBON EMULSIONSJan 15, 09Jun 23, 11[B01D]

2011/0144,608 NONWOVEN BONDING PATTERNS PRODUCING FABRICS WITH IMPROVED ABRASION RESISTANCE AND SOFTNESSFeb 08, 11Jun 16, 11[B32B, A61F]

2011/0084,028 SEPARATION MEDIA AND METHODS ESPECIALLY USEFUL FOR SEPARATING WATER-HYDROCARBON EMULSIONS HAVING LOW INTERFACIAL TENSIONSOct 09, 09Apr 14, 11[B01D]

2010/0139,877 METHOD OF FORMING A REINFORCED PARCHMENTED NONWOVEN PRODUCT, AND THE PRODUCTJan 10, 08Jun 10, 10[D21H]

2010/0130,086 HYDRAULIC PATTERNING OF A FIBROUS, SIDED NONWOVEN WEBFeb 15, 08May 27, 10[D04H]