Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Extrusion molding
Reexamination Certificate
2007-07-17
2011-10-04
Tentoni, Leo B (Department: 1742)
Plastic and nonmetallic article shaping or treating: processes
Direct application of electrical or wave energy to work
Extrusion molding
C156S167000, C156S181000, C264S103000, C264S210200, C264S555000
Reexamination Certificate
active
08029723
ABSTRACT:
Shaped filtration articles are made from a monocomponent nonwoven web formed by flowing first and second fiber-forming materials of the same polymeric composition through first and second die cavities in respective fluid communication with first and second sets of orifices in a meltblowing die tip. The first fiber-forming material flows at a lesser flow rate or viscosity through the first die cavity and first set of orifices to form a set of smaller size filaments and the second fiber-forming material flows at a greater flow rate or viscosity through the second die cavity and second set of orifices to form a set of larger size filaments. The collected nonwoven web contains a meltblown bimodal mass fraction/fiber size mixture of intermingled continuous microfibers and larger size fibers of the same polymeric composition.
REFERENCES:
patent: 2007867 (1935-07-01), Le Duc
patent: 2265529 (1941-12-01), Kemp
patent: 2565124 (1951-12-01), Durborow
patent: 2634724 (1953-04-01), Burns
patent: 2752916 (1956-07-01), Haliczer
patent: RE24549 (1958-10-01), Haliczer
patent: 3073735 (1963-01-01), Till et al.
patent: 3664335 (1972-05-01), Boucher et al.
patent: 3736928 (1973-06-01), Andersson et al.
patent: 3971369 (1976-07-01), Aspelin et al.
patent: 3981650 (1976-09-01), Page
patent: 4100324 (1978-07-01), Anderson
patent: 4118531 (1978-10-01), Hauser
patent: 4248220 (1981-02-01), White
patent: 4300549 (1981-11-01), Parker
patent: 4405297 (1983-09-01), Appel et al.
patent: 4417575 (1983-11-01), Hilton et al.
patent: 4419993 (1983-12-01), Peterson
patent: 4419994 (1983-12-01), Hilton
patent: 4536361 (1985-08-01), Torobin
patent: 4536440 (1985-08-01), Berg
patent: 4547420 (1985-10-01), Krueger et al.
patent: 4588537 (1986-05-01), Klasse et al.
patent: 4600002 (1986-07-01), Maryyanek et al.
patent: 4714647 (1987-12-01), Shipp, Jr. et al.
patent: 4729371 (1988-03-01), Krueger et al.
patent: 4807619 (1989-02-01), Dyrud
patent: 4818464 (1989-04-01), Lau
patent: 4883547 (1989-11-01), Japuntich
patent: 4920960 (1990-05-01), Hubbard et al.
patent: 4931355 (1990-06-01), Radwanski et al.
patent: 4988560 (1991-01-01), Meyer et al.
patent: 5079080 (1992-01-01), Schwarz
patent: 5227107 (1993-07-01), Dickenson et al.
patent: 5322061 (1994-06-01), Brunson
patent: 5382400 (1995-01-01), Pike et al.
patent: 5476616 (1995-12-01), Schwarz
patent: 5480466 (1996-01-01), Jackson
patent: 5496507 (1996-03-01), Angadjivand
patent: 5582907 (1996-12-01), Pall
patent: 5679042 (1997-10-01), Varona
patent: 5679379 (1997-10-01), Fabbricante et al.
patent: 5681469 (1997-10-01), Barboza et al.
patent: 5685757 (1997-11-01), Kirsch et al.
patent: 5695376 (1997-12-01), Datta et al.
patent: 5701892 (1997-12-01), Bledstein
patent: 5707468 (1998-01-01), Arnold et al.
patent: 5709735 (1998-01-01), Midkiff et al.
patent: 5717991 (1998-02-01), Nozaki et al.
patent: 5721180 (1998-02-01), Pike et al.
patent: 5724964 (1998-03-01), Brunson et al.
patent: 5735270 (1998-04-01), Bayer
patent: 5783011 (1998-07-01), Barboza et al.
patent: 5817584 (1998-10-01), Singer et al.
patent: 5877098 (1999-03-01), Tanaka et al.
patent: 5902540 (1999-05-01), Kwok
patent: 5904298 (1999-05-01), Kwok et al.
patent: 5908598 (1999-06-01), Rousseau et al.
patent: 5993543 (1999-11-01), Aoki et al.
patent: 5993943 (1999-11-01), Bodaghi et al.
patent: 6041782 (2000-03-01), Angadjivand et al.
patent: 6123077 (2000-09-01), Bostock et al.
patent: 6176955 (2001-01-01), Haynes et al.
patent: 6183670 (2001-02-01), Torobin et al.
patent: 6217691 (2001-04-01), Vair, Jr. et al.
patent: 6230901 (2001-05-01), Ogata et al.
patent: 6269513 (2001-08-01), Torobin
patent: 6274238 (2001-08-01), DeLucia
patent: 6315806 (2001-11-01), Torobin et al.
patent: 6319865 (2001-11-01), Mikami
patent: 6358592 (2002-03-01), Vair, Jr. et al.
patent: 6394090 (2002-05-01), Chen et al.
patent: 6397458 (2002-06-01), Jones et al.
patent: 6398847 (2002-06-01), Jones et al.
patent: 6409806 (2002-06-01), Jones et al.
patent: 6474336 (2002-11-01), Wolfe
patent: 6485811 (2002-11-01), Horiguchi et al.
patent: 6548431 (2003-04-01), Bansal
patent: 6562112 (2003-05-01), Jones et al.
patent: 6607624 (2003-08-01), Berrigan et al.
patent: 6660210 (2003-12-01), Jones et al.
patent: 6667254 (2003-12-01), Thompson et al.
patent: 6723669 (2004-04-01), Clark et al.
patent: 6827764 (2004-12-01), Springett et al.
patent: 6858297 (2005-02-01), Shah et al.
patent: 6916752 (2005-07-01), Berrigan et al.
patent: 6998164 (2006-02-01), Neely et al.
patent: 2003/0134515 (2003-07-01), David et al.
patent: 2003/0162457 (2003-08-01), Berrigan et al.
patent: 2004/0097155 (2004-05-01), Olson et al.
patent: 2005/0217226 (2005-10-01), Sundet et al.
patent: 2006/0005518 (2006-01-01), Duffy et al.
patent: 2647800 (2007-11-01), None
patent: 0 322 136 (1994-02-01), None
patent: 0665315 (1995-08-01), None
patent: 799342 (1999-09-01), None
patent: 2 103 491 (1983-02-01), None
patent: 06-207359 (1994-07-01), None
patent: 2001-049560 (2001-02-01), None
patent: 2002-180331 (2002-06-01), None
patent: 2002-348737 (2002-12-01), None
patent: 2007-054778 (2007-03-01), None
patent: 10-1995-0023751 (1995-08-01), None
patent: 10-2002-0061648 (2002-07-01), None
patent: WO 97/37071 (1997-10-01), None
patent: WO 02/46504 (2002-06-01), None
patent: WO-2004011123 (2004-02-01), None
patent: WO 2007/112877 (2007-10-01), None
Angadjivand Seyed A.
Brandner John M.
Jones Marvin E.
Lindquist Timothy J.
Springett James E.
3M Innovative Properties Company
Tentoni Leo B
Wood Kenneth B.
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