US2525497A - Multibed cartridge for ion exchange - Google Patents

Multibed cartridge for ion exchange Download PDF

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Publication number
US2525497A
US2525497A US683263A US68326346A US2525497A US 2525497 A US2525497 A US 2525497A US 683263 A US683263 A US 683263A US 68326346 A US68326346 A US 68326346A US 2525497 A US2525497 A US 2525497A
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US
United States
Prior art keywords
container
cation
active materials
anion
materials
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US683263A
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English (en)
Inventor
Monfried Leon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to GB4013/45A priority Critical patent/GB598956A/en
Priority to FR913263D priority patent/FR913263A/fr
Application filed by American Cyanamid Co filed Critical American Cyanamid Co
Priority to US683263A priority patent/US2525497A/en
Priority to BE469631D priority patent/BE469631A/xx
Priority to NL129322A priority patent/NL66230C/xx
Priority to GB13891/47A priority patent/GB642732A/en
Priority to ES0178630A priority patent/ES178630A2/es
Priority to FR56837D priority patent/FR56837E/fr
Application granted granted Critical
Publication of US2525497A publication Critical patent/US2525497A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J47/00—Ion-exchange processes in general; Apparatus therefor
    • B01J47/02—Column or bed processes
    • B01J47/022—Column or bed processes characterised by the construction of the column or container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J47/00—Ion-exchange processes in general; Apparatus therefor
    • B01J47/02—Column or bed processes
    • B01J47/026—Column or bed processes using columns or beds of different ion exchange materials in series
    • B01J47/028—Column or bed processes using columns or beds of different ion exchange materials in series with alternately arranged cationic and anionic exchangers
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange

Definitions

  • This invention relates to packages of ion exchange materials and more particularly, to packages the containers of which may be partially or wholly constructed of laminated materials including especially paper laminae or may be partially or wholly constructed of single ply materials such as sheet metal, molded plastic sheets, and the like.
  • the packages of my invention comprise cation 7 active materials and anion active materials packed in alternate layers in a container so as to permit uniform passage of a liquid through the container whereby the cation active materials and the anion active materials purify and demineralize the liquid by removing ionizable substances.
  • a lightweight container adapted to contain ion active materials and to permit a substantially uniform passage of a fluid such as water through the container has been devised.
  • This container has a plurality of compartments separated by foraminous members, top and bottom covers, each of said covers having an inlet or an outlet, and foraminous members at the top of the top compartment and at the bottom of the bottom compartment, said members spaced a substantial distance from the top and bottom covers, respectively.
  • a container comprising a top cover provided with a hole, a
  • top foraminous member held a substantial'distance apart from said cover a bottom cover with a hole and a bottom foraminous member held a substantial distance apart from said bottom cover, is filled with alternate layers of cation active and anion active materials. These layers are packed between the top and bottom forammg air during transportation orstorage.
  • inous members sufliciently tightly to prevent mixing of the said cation and anion active'material layers.
  • the figure is a central ,vertical section of my material package showing stoppers placed in the holes of the covers of the container, which stoppers carry conduits to permit the flow of liquid into and out of said container.
  • Container I has a cylindrical wall 2,13, top cover 3, and a bottom cover 4.
  • Top and bottom covers 3 and 4 contain holes 5 and 6, respectively.
  • the covers are preferably made of metal and attached to the wall 2 of container 1 by crimping the edges thereof over the top and bottom peripheries of the wall 2.
  • a dish-shaped spacer I which is preferably constructed of molded plastic is inverted and arranged so that the edges thereof are in contact with the top cover 3.
  • the spacer 1, which is provided with relatively large openings 8, is contiguous to a liquid-permeable member 9 which may be a screen.
  • Dish-shaped spacer In similar in construction to spacer l, is inverted and arranged so that its edges are supported by the bottom cover 4.
  • the top surface of the spacer III which is provided with relatively large openings II, supports a foraminous member l2.
  • holes 5 and 6 are preferably closed with a suitable cover in order to preserve the condition, of the ion active materials by exclud-
  • a suitable cover in order to preserve the condition, of the ion active materials by exclud-
  • metallic tops or covers which are always completely vapor-proof are preferred a1- though the tops may be of adhesive paper, ad-' hesive tape, etc.v
  • Conduit I! is inserted in hole 5 in the top 'cover 3 and secured in place and made fluid tight by means of a'plug or stopper l8 through which conduit l1 passes.
  • a conduit I9 is inserted in hole 6 in the bottom cover 4 and secured in place and made fluid tight by means of a plug or stopper 2! through which conduit I9 passes.
  • the liquid to be purified such as water, flows 7 in through conduit l9 and into the space between the bottom cover 4 and the spacer Ill.
  • the liquidthen passes through the spacer l and is so distributed thereby that it flows uniformly through the foraminous means I I, thence through the cation active material I6, through the anion active material l5, through the cation active material l4, through the anion active material 13 which may be especially treated as mentioned above in order to control the pH of the efiiuent, through the liquid-permeable member 9, through the openings 8 of the spacer I into the space between the top cover 3 and the spacer I, and finally out through conduit l1.
  • an eminently satisfactorily functioning package particularly if the liquid to be purified contains silica, may comprise five layers, four of them of alternate cation and anion exchange materials and the fifth of an anion exchange material which may or may not be specially activated.
  • My package is adapted for the passage of liquid to be purified in either direction, but it is preferable that the liquid flows in the bottom and out the top. Since it is generally preferable that a liquid to be demineralized be passed through a bed of cation active material first and through a bed of anion active material last regardless of whether or not the last anion bed he buffered, the liquid should be introduced into that end of the container where the cation active material is placed. In order to avoid the possibility of the liquid being introduced into the wrong end of the container I prefer to make the holes 5 and 6 of different sizes and, in general, I prefer that the hole 6 in the bottom cover 4 be larger than hole 5 in the top cover 3. However, this is merely a matter of preference and the reverse procedure may be employed is desired.
  • My container may be made of any suitable material such as sheet metal, plastic, or laminated materials including those comprising paper laminae. If metals be employed it is preferable that the metal be such as will withstand the high acidity and basicity which occurs during the use of the cartridge in the purification of water and other fluids in the various compartments filled with ion active materials. If a corrodable metal is used, it is preferable that the inside surface thereofbe coated with a water-proof,
  • acid-proof and alkali -proof composition such as pitch from still residues of petroleumor coal origin either :alone or with a drying oil, rubber, polystyrene, copolymers of vinyliden'e. chloride andvinyl chloride (such as those sold under the trade name Saran) etc.
  • a container constructed of metal has many advantagesincluding superior strength, better appearance, adaptability to lithographic marking, and the like.
  • the container aswell as the covers thereof, may be molded of plastic, either with or without filler or reinforcing material.
  • the outside wall of the container may be constructed of cloth or paper bonded together with a plastic such as a urea-formaldehyde resin, an alkylated urea-formaldehyde resin, a phenolformaldehyde resin, a melamine-formaldehyde resin, an alkylated melamine-formaldehyde resin, polystyrene, a hard rubber, a copolymer of unsaturated substances such as a copolymer of an unsaturated alkyd resin with styrene or an allyl ester, a polymer of an unsaturated substance such as polyallyl esters, an acrylonitrile polymer, etc., or it may be constructed of plastic alone.
  • a plastic such as a urea-formaldehyde resin, an alkylated urea-formalde
  • Fillers which may be used in conjunction with these resins include: cellulosic fibers, asbestos fibers, synthetic poly-amide fibers (such as those sold under the trade name "Nylon), glass fibers, wood flour, etc. If the container is made of laminated sheets, these may be woven of paperlike materials and may include one or more of the fibers mentioned above.
  • the container be made of as cheap materials as possible. Lightweight materials are also highly desirable for obvious reasons. Accordingly, it is often preferable that the container be constructed of a laminated material including paper laminae and, if so, that it be suitably water-proofed. For water-proofing, any of the materials mentioned above as suitable for coating corrodable metals may be used. Furthermore, metal foil may be included in the laminated material in order to improve the water resistance of the material without adding greatly to the weight of the material.
  • laminated materials such as laminated paper impregnated with paraffin, bituminous and asphaltic substances, synthetic resins, etc., may be used for the wall of my containers, as indicated previously.
  • My containers may be square, elliptical, or circular in cross-section. It is generally preferable that they be cylindrical, chiefly because of the resultant simplicity of manufacture.
  • the top and bottom foraminous members each be held a substantial distance from the top and bottom covers, respectively, in order to obtain uniform flow through the container without channeling. Accordingly, it is preferable that the distance between the top and bottom covers and the adjacent foraminous members be at least inch and more'particularly, that this distance be between about a; of the smallest diameter of the container and about t; of the largest diameter of the container.
  • the largest and smallest diameters are intended to represent the largest and smallest dimensions of a cross-section of any particularly shaped container. Of course, if the container is circular, the largest and smallest diameters are the same.
  • Any cation active material may be. used in the appropriate layers of my containers.
  • the cation active materials should be used in the hydrogen activated form when they are said to be operated on the "hydrogen cycle or described as "hydrogen active” since they exchange hydrogen ion in the purification process.
  • suitable cation active materials which may be used 'are polyhydric phenol-aldehyde condensation products, catechol tannin-formaldehyde condensation products, aromatic sulphonic acid-formaldehyde condensation products (as described in U. S.
  • Patent No: 2,204,539 the carbonaceous materials such as coal, peat, lignite, etc., the insolubilized alpha-furyl sulphonates, furfuralmineral acid halide condensation products as described in the copending application of James R. Dudley, Serial No. 528,768, filed March 30, 1944, now matured into U. S. Patent No. 2,408,615, sulfonated or phosphonated resinified furfural as described in the copending application of Jack T. Thurston, Serial No. 652,235,fi1ed March 5, 1946, aldehyde condensation products of sulfonated hydroxy aromatic compounds containing activating groups such as ketone groups as described in the copending application of Jack T. Thurston, Serial No. 541,480, filed June 21, 1944, now matured into U. S. Patent No. 2,440,669, etc.
  • Cation active materials may be activated before placing in my containers by treatment with dilute acid solution, e. g., 01-10% of hydrochloric acid, sulphuric acid, etc., and subsequently washing the material with water to remove free acid.
  • dilute acid solution e. g., 01-10% of hydrochloric acid, sulphuric acid, etc.
  • any anion active resin may be used in the appropriate layers of my containers and among these, some examples are: the aldehyde condensation products of m-phenylene diamine, biguanide, guanyl urea, substituted guanidines such as methyl guanidine, substituted biguanides such as phenyl-biguanide, or polyamines preferably polyethylene polyamines, etc.
  • Such condensation products are preferably formaldehyde condensation products, although other aldehyde condensation products may be used if desired.
  • Examples of other aldehydes which may be used are: furfural, acrolein, benzaldehyde, etc.
  • the active resins such as those prepared from guanidine, guanyl urea, biguanide or other materials which do not form sufliciently insoluble condensation products with formaldehyde for most practical purposes, are preferably insolubilized with one or more suitable formaldehyde reactive materials, e. g., urea, thiourea, or the amonotriazines (especially melamine and the guanamines which react with formaldehyde to produce insoluble products), etc.
  • suitable formaldehyde reactive materials e. g., urea, thiourea, or the amonotriazines (especially melamine and the guanamines which react with formaldehyde to produce insoluble products), etc.
  • the anion active resins prepared from guanidine, guanyl urea, or biguanide, etc. may be prepared in the general manner described in U. S. Patents No. 2,251,234 and 2,285,750.
  • anion active resins which may be used include condensation products with polyalkylene polyamines of acetalciehyde and formaldehyde as described in the copending application of Jack T. Thurston, Serial No. 643,836, filed January 26, 1946, now abandoned, or acrylonitrile-ammonocarbonic acid adducts such as described in the copending application of James R. Dudley, Serial No. 653,175, filed March 1, 1946, now matured into U. S. Patent No. 2,445,735, or of crotonaldehyde and formaldehyde as described in the copending application of James R. Dudley, Serial No. 643,838, filed January 26, 1946, now abandoned.
  • Patent No. 2,469,684 of glycerol dichlorhydrin and polyamines as described in the copending application of Lennart A. Lundberg, Serial No. 624,606, filed October 25, 1945, now matured into U. S. Patent No, 2,469,693, or of polyacrylic acid and polyamines as described in the copending application of James R.-Dudley, Serial No. 648,818, filed February 19, 1946, aldehyde condensation products of furyl aliphatic amines as described in the copending application of James R. Dudley, Serial No. 642,416, filed January 19, 1946, etc., may be used.
  • the anion active resin employed in the first anion layer is preferably activated in the conventional manner by treatment with a dilute solution of an alkaline material, e. g], a 01-10% solution of sodium hydroxide, sodium carbonate or of a corresponding potassium salt, etc.
  • a buffered anion active material may, if desired, be used in which case it constitutes the last layer of anion active material.
  • Such a material is first activated in the conventional manner and is then treated with a reagent to buffer it to a desired point. In other words, a reagent is selected which will give to an aqueous solution or to water flowing from the container a desired pH.
  • the anion active resin in compartment 13 may be adjusted or buffered so that the pH of the efiluent will be about 7.5 or between 6 and 8 by treating the resin with sufllcient carbon dioxide in the presence of water or by treating the resin with a dilute solution of sodium bicarbonate mixed with sodium hydroxide or sodium carbonate.
  • a package which consists of a container comprising a top cover provided with a hole, a top foraminous member held a substantial distance apart from said to cover, a bottom cover with a hole and a bottom foraminous member held a substantial distance apart from said bottom cover, and a plurality of layers of cation active materials and anion active materials packed between the top and bottom foraminous members sufilciently tightly to prevent mixing of said cation and anion active materials, said container being adapted to permit the uniform passage of a liquid tobe demineralized through said cation active and anion active materials.
  • a package which consists of a container comprising a top cover provided with a hole, a top foraminous member held a substantial distance apart from said topcover, a bottom cover with a. hole and a bottom foraminous member held a substantial distance apart from said bottom cover, and alternate layers of cation active' materials and anion active materials packed between the top and bottom foraminous members sufllciently tightly to prevent mixing of said cation and anion active materials, said container being adapted to permit the uniform passage of a. liquid to be demineralizedthrough said cation active and anion active materials.
  • a package which consists of a tubular container comprising a top cover provided 'with a hole, a top foraminous member held a substantial distance apart from said top cover, a bottom cover with a hole and a bottom foraminous member held a substantial distance apart from said bottom cover, and at least four alternate layers of cation active materials and anion active materials packed between the top and bottom foraminous members sufliciently tightly to prevent mixing of said cation and anion active materials, said container being adapted to permit the uniform passage of a liquid to be demineralized through said cation and anion active material layers.
  • a package which consists of a tubular container comprising a top cover provided with a hole, a top foraminous member held a substantial distance apart from said top cover, a bottom cover with a hole and a bottom foraminous member held a substantial distance apart from said bottom cover, and from about four to eight alternate layers of cation active materials and anion active materials packed between the top and bottom foraminous members sufllciently tightly to prevent mixing of said cation and anion active materials, said container being adapted to permit the uniform passage of a liquid to be demineralized through said cation and'anion active material layers.
  • a package which consists of a tubular con- Number Name Date 1,267,327 McCarty May 21, 1918 v 2,087,157 Lind July 13, 1937 2,404,367 Durant et a1 July 23, 1946 2,423,224 a Card July 1, 1947 tainer comprising a top cover provided with a hole, a top foraminous member held a. substantial distance apart from said top cover, a bottom sage of a liquid to be demineralized through said cation and anion active material layers.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Water Treatment By Sorption (AREA)
US683263A 1946-07-12 1946-07-12 Multibed cartridge for ion exchange Expired - Lifetime US2525497A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB4013/45A GB598956A (en) 1946-07-12 1945-02-16 Improvements in containers
FR913263D FR913263A (fr) 1946-07-12 1945-08-09 Perfectionnements aux récipients pour matières servant à purifier des fluides
US683263A US2525497A (en) 1946-07-12 1946-07-12 Multibed cartridge for ion exchange
BE469631D BE469631A (xx) 1946-07-12 1946-12-04
NL129322A NL66230C (xx) 1946-07-12 1946-12-13
GB13891/47A GB642732A (en) 1946-07-12 1947-05-23 Improvements in or relating to packages for use in liquid purification
ES0178630A ES178630A2 (es) 1946-07-12 1947-06-25 MEJORAS INTRODUCIDAS EN LA MANUFACTURA DE RECIPIENTES PARA MATERIAS DEPURADORAS DE FLUiDOS
FR56837D FR56837E (fr) 1946-07-12 1947-06-26 Perfectionnements aux récipients pour matières servant à purifier des fluides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US683263A US2525497A (en) 1946-07-12 1946-07-12 Multibed cartridge for ion exchange

Publications (1)

Publication Number Publication Date
US2525497A true US2525497A (en) 1950-10-10

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Application Number Title Priority Date Filing Date
US683263A Expired - Lifetime US2525497A (en) 1946-07-12 1946-07-12 Multibed cartridge for ion exchange

Country Status (6)

Country Link
US (1) US2525497A (xx)
BE (1) BE469631A (xx)
ES (1) ES178630A2 (xx)
FR (2) FR913263A (xx)
GB (2) GB598956A (xx)
NL (1) NL66230C (xx)

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2604991A (en) * 1950-12-05 1952-07-29 Loda W Rogers Portable water purifier
US2682268A (en) * 1950-08-08 1954-06-29 Abbott Lab Venoclysis equipment
US2692855A (en) * 1951-04-05 1954-10-26 Ionics Method of and apparatus for sterilizing liquids
US2739598A (en) * 1953-05-04 1956-03-27 R S Aries And Associates Inc Filter for tobacco smoke
US2751081A (en) * 1954-02-12 1956-06-19 Motte Charles V B La Water demineralizer
US2752309A (en) * 1952-04-30 1956-06-26 Ardath H Emmons Process for water decontamination
US2754829A (en) * 1950-02-21 1956-07-17 Howard V Hess Smoke filter
US2761832A (en) * 1950-08-24 1956-09-04 Crystal Res Lab Inc Liquid treating apparatus
US2763607A (en) * 1951-06-19 1956-09-18 Tno Process and apparatus for desalting liquids by means of ion-exchangers, and for regenerating said exchangers
US2770241A (en) * 1954-05-10 1956-11-13 American Collo Corp Tobacco smoke filter and method
US2798850A (en) * 1952-01-02 1957-07-09 Kimberly Clark Co Ion exchange resinous product
US2839195A (en) * 1954-03-11 1958-06-17 Alfred E Reimers Water conditioning units for steam emitting pressing devices
US2869724A (en) * 1955-06-29 1959-01-20 Harry J Mcdevitt Device for demineralizing water
US2935199A (en) * 1958-01-24 1960-05-03 Allan H Willinger Under gravel filter device
US3355018A (en) * 1964-12-18 1967-11-28 Barnstead Still And Sterilizer Demineralization of water
US3449266A (en) * 1964-05-25 1969-06-10 Drackett Co Stabilized solid granular perfume composition
US3650431A (en) * 1969-12-19 1972-03-21 Phillips Petroleum Co Safety container
US3730349A (en) * 1970-04-29 1973-05-01 W Herrmann Ion exchange filter particularly a miniature filter
US5039488A (en) * 1986-06-06 1991-08-13 Genentech, Inc. Devices for amino acid sequence determination
US5041219A (en) * 1990-02-12 1991-08-20 Strand Charles D Dual chamber water filter
US5223435A (en) * 1986-06-06 1993-06-29 Genetech, Inc. Amino acid sequence determination with mobile peptide
US5271837A (en) * 1992-04-22 1993-12-21 Discepolo Carl G Drinking water filtration system
US5464532A (en) * 1991-10-11 1995-11-07 Ecowater Systems, Inc. Water softener with resin beads of different mesh sizes
US5798040A (en) * 1996-02-09 1998-08-25 United States Filter Corporation Water purification cartridge assembly with unidirectional flow through filter media
US5895570A (en) * 1996-02-09 1999-04-20 United States Filter Corporation Modular filtering system
WO2002046106A1 (de) * 2000-12-09 2002-06-13 Schwarting Georg C Vorrichtung zur fällung von kalk aus wasser
US20150273356A1 (en) * 2012-12-14 2015-10-01 Mann+Hummel Gmbh Ion Exchanger for a Cooling Circuit
USD740915S1 (en) 2014-04-10 2015-10-13 Unger Marketing International, Llc Water purification device
USD742997S1 (en) 2014-04-10 2015-11-10 Unger Marketing International, Llc Water purification media device
USD849886S1 (en) 2017-08-28 2019-05-28 Unger Marketing International, Llc Water purification device
US10414671B2 (en) 2014-04-10 2019-09-17 Unger Marketing International, Llc Filter assembly with locking cover
USD907742S1 (en) 2018-03-07 2021-01-12 Unger Marketing International, Llc Water purification media device
US11148082B2 (en) 2015-04-10 2021-10-19 Unger Marketing International, Llc Fluid purification device
US11154800B2 (en) 2015-04-10 2021-10-26 Unger Marketing International, Llc Fluid purification device
US11319124B2 (en) * 2018-03-08 2022-05-03 Purewine Inc. Beverage filtration device
USD958928S1 (en) 2018-11-01 2022-07-26 Unger Marketing International, Llc Water purification media device
US11911720B2 (en) 2014-04-10 2024-02-27 Unger Marketing International, Llc Fluid purification device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2849158A (en) * 1954-07-06 1958-08-26 Lloyd M Hopla Pouring spout and strainer for paint can
US3319791A (en) * 1964-03-02 1967-05-16 Fred H Horne Poppet valve and disposable container combination
AP124A (en) * 1989-09-25 1991-03-14 Biofil Ltd Filter device.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1267327A (en) * 1918-02-25 1918-05-21 Hosea Ashwell Combination-handle for rolling-pins and other implements.
US2087157A (en) * 1937-03-19 1937-07-13 Leroy C Lind Art of water softening
US2404367A (en) * 1942-10-07 1946-07-23 American Cyanamid Co Water purification
US2423224A (en) * 1944-12-28 1947-07-01 Fram Corp Filter cartridge package

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1267327A (en) * 1918-02-25 1918-05-21 Hosea Ashwell Combination-handle for rolling-pins and other implements.
US2087157A (en) * 1937-03-19 1937-07-13 Leroy C Lind Art of water softening
US2404367A (en) * 1942-10-07 1946-07-23 American Cyanamid Co Water purification
US2423224A (en) * 1944-12-28 1947-07-01 Fram Corp Filter cartridge package

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754829A (en) * 1950-02-21 1956-07-17 Howard V Hess Smoke filter
US2682268A (en) * 1950-08-08 1954-06-29 Abbott Lab Venoclysis equipment
US2761832A (en) * 1950-08-24 1956-09-04 Crystal Res Lab Inc Liquid treating apparatus
US2604991A (en) * 1950-12-05 1952-07-29 Loda W Rogers Portable water purifier
US2692855A (en) * 1951-04-05 1954-10-26 Ionics Method of and apparatus for sterilizing liquids
US2763607A (en) * 1951-06-19 1956-09-18 Tno Process and apparatus for desalting liquids by means of ion-exchangers, and for regenerating said exchangers
US2798850A (en) * 1952-01-02 1957-07-09 Kimberly Clark Co Ion exchange resinous product
US2752309A (en) * 1952-04-30 1956-06-26 Ardath H Emmons Process for water decontamination
US2739598A (en) * 1953-05-04 1956-03-27 R S Aries And Associates Inc Filter for tobacco smoke
US2751081A (en) * 1954-02-12 1956-06-19 Motte Charles V B La Water demineralizer
US2839195A (en) * 1954-03-11 1958-06-17 Alfred E Reimers Water conditioning units for steam emitting pressing devices
US2770241A (en) * 1954-05-10 1956-11-13 American Collo Corp Tobacco smoke filter and method
US2869724A (en) * 1955-06-29 1959-01-20 Harry J Mcdevitt Device for demineralizing water
US2935199A (en) * 1958-01-24 1960-05-03 Allan H Willinger Under gravel filter device
US3449266A (en) * 1964-05-25 1969-06-10 Drackett Co Stabilized solid granular perfume composition
US3355018A (en) * 1964-12-18 1967-11-28 Barnstead Still And Sterilizer Demineralization of water
US3650431A (en) * 1969-12-19 1972-03-21 Phillips Petroleum Co Safety container
US3730349A (en) * 1970-04-29 1973-05-01 W Herrmann Ion exchange filter particularly a miniature filter
US5039488A (en) * 1986-06-06 1991-08-13 Genentech, Inc. Devices for amino acid sequence determination
US5223435A (en) * 1986-06-06 1993-06-29 Genetech, Inc. Amino acid sequence determination with mobile peptide
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Also Published As

Publication number Publication date
NL66230C (xx) 1950-08-15
GB598956A (en) 1948-03-02
FR56837E (fr) 1952-10-07
GB642732A (en) 1950-09-13
ES178630A2 (es) 1947-08-16
BE469631A (xx) 1947-10-31
FR913263A (fr) 1946-09-03

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