Liquid purification or separation – Processes – Separating
Reexamination Certificate
2009-05-13
2010-06-22
Kim, John (Department: 1797)
Liquid purification or separation
Processes
Separating
C210S266000, C210S501000, C210S502100, C210S503000, C210S504000, C210S505000, C210S506000, C210S507000, C210S508000, C210S649000, C210S692000, C210S694000
Reexamination Certificate
active
07740766
ABSTRACT:
Disclosed is a method of providing potable water that includes providing a filter, passing water through the filter, and removing bacteria and viruses from the water with the filter. The filter comprises a housing having an inlet and an outlet and a filter material disposed within the housing, the filter material formed at least in part from a plurality of mesoporous wood activated carbon filter particles and particles selected from the group consisting of mesoporous wood activated carbon filter particles coated entirely with a cationic polymer, mesoporous wood activated carbon filter particles partially coated with a cationic polymer, and mixtures thereof. A sum of mesopore and macropore volumes of the filter particles may be between about 0.2 mL/g and about 2 mL/g, wherein mesopore means an intra-particle pore having a diameter between 2 nm and 50 nm, and macropore means an intra-particle pore having a diameter greater than 50 nm, a total pore volume of the filter particles is greater than about 0.4 mL/g and less than about 3 mL/g, and a ratio of the sum of the mesopore and macropore volumes to the total pore volume of the filter particles is greater than about 0.3. The filter removes bacteria and viruses from the water at a level of Filter Bacteria Log Removal of greater than about 2 logs and a Filter Viruses Log Removal of greater than about 1 log.
REFERENCES:
patent: 9622 (1853-03-01), Black
patent: 25398 (1859-09-01), Duchamp
patent: 531838 (1895-01-01), Davis et al.
patent: 543922 (1895-08-01), Buckley
patent: 590020 (1897-09-01), Myers
patent: 602883 (1898-04-01), Tyden
patent: 611691 (1898-10-01), Langdon et al.
patent: 673722 (1901-05-01), Moulton
patent: D34658 (1901-06-01), Weaver
patent: 826654 (1906-07-01), Firth
patent: 963324 (1910-07-01), Randall
patent: 967905 (1910-08-01), Hagg
patent: D41321 (1911-04-01), Anderson
patent: 1043933 (1912-11-01), Hildebrand
patent: 1363589 (1920-12-01), Hartman
patent: 1539775 (1925-05-01), Sauer
patent: 1579158 (1926-03-01), Smile
patent: 1621684 (1927-03-01), Rabjohn et al.
patent: 1674203 (1928-06-01), Holz et al.
patent: D76391 (1928-09-01), Groak
patent: 1752060 (1930-03-01), Burright et al.
patent: 1782850 (1930-11-01), Hill
patent: 1806977 (1931-05-01), Kenney
patent: D93910 (1934-11-01), Camp
patent: D113679 (1939-03-01), Neely
patent: D128316 (1941-07-01), Roffy
patent: 2268076 (1941-12-01), Lawlor
patent: D133177 (1942-07-01), Gross
patent: D136021 (1943-07-01), Kraissl, Jr.
patent: 2335458 (1943-11-01), Senyal
patent: 2372340 (1945-03-01), Senyal
patent: D143545 (1946-01-01), Pond et al.
patent: 2633990 (1953-04-01), Simpson et al.
patent: D170472 (1953-09-01), Monsarrat
patent: D173603 (1954-12-01), Atkinson
patent: 2701792 (1955-02-01), Owen
patent: 2750080 (1956-06-01), Blanchard et al.
patent: 2811258 (1957-10-01), Schleyer et al.
patent: 2987187 (1961-06-01), Comroe
patent: D196108 (1963-08-01), Geber
patent: 3184064 (1965-05-01), Sampson et al.
patent: 3242073 (1966-03-01), Guebert et al.
patent: 3268444 (1966-08-01), Renn
patent: 3278560 (1966-10-01), Gaertner
patent: 3283040 (1966-11-01), Stover
patent: 3314897 (1967-04-01), Gaertner
patent: 3333703 (1967-08-01), Scavuzzo
patent: D208752 (1967-09-01), Payne
patent: 3342335 (1967-09-01), Gamundi et al.
patent: 3352424 (1967-11-01), Guebert et al.
patent: 3419645 (1968-12-01), Pietzka et al.
patent: 3428089 (1969-02-01), Kachergis
patent: D216978 (1970-03-01), Greene
patent: 3539009 (1970-11-01), Kudlaty
patent: 3550782 (1970-12-01), Veloz
patent: 3558276 (1971-01-01), Otani
patent: 3572553 (1971-03-01), Ogden
patent: 3591010 (1971-07-01), Pall et al.
patent: D221850 (1971-09-01), Anderson
patent: 3670892 (1972-06-01), Baerg et al.
patent: 3678098 (1972-07-01), Lewis et al.
patent: 3686151 (1972-08-01), Keim
patent: 3692180 (1972-09-01), LaRaus
patent: 3700623 (1972-10-01), Keim
patent: D227565 (1973-07-01), Ehret
patent: D227886 (1973-07-01), Martinez
patent: D229178 (1973-11-01), Mixon
patent: 3770625 (1973-11-01), Wallis et al.
patent: 3784649 (1974-01-01), Buckman et al.
patent: 3814642 (1974-06-01), Araki et al.
patent: D232550 (1974-08-01), Fushihara
patent: 3836458 (1974-09-01), Walls et al.
patent: 3847787 (1974-11-01), Okazaki et al.
patent: 3853761 (1974-12-01), McClory
patent: 3856676 (1974-12-01), Grimme et al.
patent: D234356 (1975-02-01), Holben et al.
patent: D234357 (1975-02-01), Humphrey
patent: 3871950 (1975-03-01), Hashino et al.
patent: D234843 (1975-04-01), Taylor
patent: D235143 (1975-05-01), Ehret
patent: D235206 (1975-05-01), Bertrand
patent: 3886093 (1975-05-01), Dimitri
patent: 3888958 (1975-06-01), Juntgen et al.
patent: D236263 (1975-08-01), Dussardier et al.
patent: D236264 (1975-08-01), Taylor
patent: D236265 (1975-08-01), Dussardier
patent: 3898188 (1975-08-01), Rembaum et al.
patent: D236829 (1975-09-01), Berry, Jr. et al.
patent: 3931009 (1976-01-01), Davis
patent: 3939074 (1976-02-01), Bray
patent: 3950253 (1976-04-01), Stern
patent: 3950267 (1976-04-01), Arakawa et al.
patent: D240624 (1976-07-01), MacMurray
patent: D240731 (1976-07-01), Free et al.
patent: 3972818 (1976-08-01), Bokros
patent: D242043 (1976-10-01), Corder et al.
patent: D242249 (1976-11-01), Corder et al.
patent: 4007114 (1977-02-01), Ostreicher
patent: 4014792 (1977-03-01), Gossett et al.
patent: 4019986 (1977-04-01), Burris et al.
patent: 4021343 (1977-05-01), Tyler
patent: 4045553 (1977-08-01), Mitsumori et al.
patent: 4049550 (1977-09-01), Obidniak
patent: 4081370 (1978-03-01), Schmitt, Jr. et al.
patent: 4086166 (1978-04-01), Martin
patent: D249053 (1978-08-01), Hansrote
patent: D249054 (1978-08-01), Hansrote
patent: D249055 (1978-08-01), Hansrote
patent: D249057 (1978-08-01), Hansrote
patent: 4110219 (1978-08-01), Maples
patent: D249275 (1978-09-01), Mackay et al.
patent: D249701 (1978-09-01), Maples et al.
patent: D251380 (1979-03-01), Casamitjana
patent: 4147631 (1979-04-01), Deines et al.
patent: 4152262 (1979-05-01), Rose
patent: 4172796 (1979-10-01), Corder
patent: D253715 (1979-12-01), Emery
patent: 4181694 (1980-01-01), Hashino et al.
patent: 4190532 (1980-02-01), Halbfoster
patent: 4190537 (1980-02-01), Tondreau et al.
patent: 4205055 (1980-05-01), Maire et al.
patent: D256944 (1980-09-01), Fox, Jr.
patent: 4252650 (1981-02-01), Mas et al.
patent: D258462 (1981-03-01), Mixon
patent: 4277333 (1981-07-01), Coppola
patent: 4283283 (1981-08-01), Zimmerman
patent: 4292417 (1981-09-01), Ishii et al.
patent: 4305782 (1981-12-01), Ostreicher et al.
patent: 4309247 (1982-01-01), Hou et al.
patent: 4321288 (1982-03-01), Ostreicher
patent: 4340479 (1982-07-01), Pall
patent: 4340480 (1982-07-01), Pall et al.
patent: 4352884 (1982-10-01), Nakashima et al.
patent: 4361486 (1982-11-01), Hou et al.
patent: 4366068 (1982-12-01), Ostreicher et al.
patent: 4368123 (1983-01-01), Stanley
patent: D268866 (1983-05-01), Desai et al.
patent: 4389311 (1983-06-01), La Freniere
patent: 4391712 (1983-07-01), Tyler et al.
patent: 4396512 (1983-08-01), Beauman et al.
patent: 4399035 (1983-08-01), Nohmi et al.
patent: 4430226 (1984-02-01), Hegde et al.
patent: 4434206 (1984-02-01), Fukuda et al.
patent: 4448695 (1984-05-01), Gordon, Jr. et al.
patent: D274930 (1984-07-01), Joe
patent: 4473474 (1984-09-01), Ostreicher et al.
patent: 4482641 (1984-11-01), Wennerberg
patent: 4504389 (1985-03-01), Rundzaitis
patent: D278650 (1985-04-01), Slovak et al.
patent: 4515692 (1985-05-01), Chandler et al.
patent: 4523995 (1985-06-01), Pall et al.
patent: 4552863 (1985-11-01), Fujimori
patent: D282767 (1986-02-01), Shofner
patent: 4572785 (1986-02-01), Braaten
patent: 4573464 (1986-03-01), Yo
patent: 4576929 (1986-03-01), Shimazaki
patent: 4578150 (1986-03-01), Hou
patent: 4585554 (1986-04-01), Burrows
patent: 4595497 (1986-06-01), Burrows
patent: 4606828 (1986-08-01), Wells
patent: 4609466 (1986-09-01), McCausland et al.
patent: 4623451 (1986-11-01), Oliver
patent: 4623467 (1986-11-01), Hamlin
patent: 4626346 (1986-12-01), Hall
patent: D288115 (1987-02-01), McCausland et al.
patent: 4645567 (1987-02-01), Hou et al.
patent: 4654075 (1987-03-01), Cipollini
patent: D289429 (1987-04-01), Thum
Bjorkquist David William
Collias Dimitris Ioannis
Mitchell Michael Donovan
Woolley Matthew Morgan
Zaveri Piyush Narendra
Clay Cynthia L.
Kim John
The Procter & Gamble & Company
William Zerby Kim
LandOfFree
Methods for treating water does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods for treating water, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods for treating water will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4246081