US Patent No: 5,527,429

Number of patents in Portfolio can not be more than 2000

Method of preparing paper for filter bags, apparatus for implementing the method, and product obtained thereby

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Importance

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Abstract

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A method of preparing paper for filter bags, the method of the type comprising a step during which a non-woven paper is prepared comprising two superposed layers, namely a layer based on synthetic fibers and a layer of cellulose fibers, by a technique which is known per se, wherein the method includes a subsequent step of subjecting the non-woven paper to a calendering operation between a support structure and a heated cylinder having projections. The present invention also provides apparatus for implementing the method and products obtained in this manner.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
PAPETERIES DE CASCADECERGUE GABERIC1

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dambreville, Abel Rosporden, FR 1 11
Deleplanque, Philippe Quimper, FR 2 34
Le, Brech Yves Scaer, FR 4 13
Le, Fol Roger Quimper, FR 1 11

Cited Art Landscape

Patent Info (Count) # Cites Year
 
DEXTER CORPORATION (1)
4,289,580 Heat seal fibrous web and method of its manufacture 14 1979
 
MCNEIL-PPC, INC. (1)
4,590,114 Stabilized absorbent structure containing thermoplastic fibers 61 1984
 
PAPER-PAK INDUSTRIES (1)
4,770,920 Lamination anchoring method and product thereof 23 1986
 
SIEMENS HEALTHCARE DIAGNOSTICS INC. (1)
8,101,429 Native analyte as a reference in lateral flow assays 1 2004
 
Unicon Papier und Kanststoffhandel sgesellschaft mbH (1)
5,173,154 Heat sealable tea bag paper and process of producing same 10 1991

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
KIMBERLY-CLARK WORLDWIDE, INC. (9)
D390363 Embossed tissue 20 1997
6,398,910 Decorative wet molding fabric for tissue making 35 2000
6,610,619 Patterned felts for bulk and visual aesthetic development of a tissue basesheet 3 2000
6,821,385 Method of manufacture of tissue products having visually discernable background texture regions bordered by curvilinear decorative elements using fabrics comprising nonwoven elements 32 2001
6,790,314 Fabric for use in the manufacture of tissue products having visually discernable background texture regions bordered by curvilinear decorative elements and method thereof 36 2001
6,787,000 Fabric comprising nonwoven elements for use in the manufacture of tissue products having visually discernable background texture regions bordered by curvilinear decorative elements and method thereof 30 2001
6,749,719 Method of manufacture tissue products having visually discernable background texture regions bordered by curvilinear decorative elements 18 2001
6,746,570 Absorbent tissue products having visually discernable background texture 29 2002
7,320,743 Method of making a tissue basesheet 8 2003
 
Firma Carl Freudenberg (2)
6,045,595 Dust filter bag 10 1998
6,193,773 Dust filter bag 24 1999