GB384052A - Method for the manufacture of smoke filters or collective filters - Google Patents

Method for the manufacture of smoke filters or collective filters

Info

Publication number
GB384052A
GB384052A GB3077731A GB3077731A GB384052A GB 384052 A GB384052 A GB 384052A GB 3077731 A GB3077731 A GB 3077731A GB 3077731 A GB3077731 A GB 3077731A GB 384052 A GB384052 A GB 384052A
Authority
GB
United Kingdom
Prior art keywords
filters
gas
manufacture
collective
resins
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
Application number
GB3077731A
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.)
NICOLAI LOUIS HANSEN
Original Assignee
NICOLAI LOUIS HANSEN
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
Application filed by NICOLAI LOUIS HANSEN filed Critical NICOLAI LOUIS HANSEN
Priority to GB3077731A priority Critical patent/GB384052A/en
Publication of GB384052A publication Critical patent/GB384052A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B21/00—Devices for producing oxygen from chemical substances for respiratory apparatus

Abstract

384,052. Gas filters. HANSEN, N. L., Refshalevej, Copenhagen. Nov. 6, 1931, No. 30977. [Class 8 (ii).] Filters for gas masks or for protecting closed spaces against poison gas &c. comprise fibres or fabric treated with organic acids of high molecular weight (of the order C20H30O2, organic salts or esters, resins, gum resins, cellulose esters, lacs or soaps, not treated electrically and having an affinity for colloid particles. These materials may be applied as powders to the fibres &c., or they may be applied in solution with subsequent drying.
GB3077731A 1931-11-06 1931-11-06 Method for the manufacture of smoke filters or collective filters Expired GB384052A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3077731A GB384052A (en) 1931-11-06 1931-11-06 Method for the manufacture of smoke filters or collective filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3077731A GB384052A (en) 1931-11-06 1931-11-06 Method for the manufacture of smoke filters or collective filters

Publications (1)

Publication Number Publication Date
GB384052A true GB384052A (en) 1932-12-01

Family

ID=10312978

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3077731A Expired GB384052A (en) 1931-11-06 1931-11-06 Method for the manufacture of smoke filters or collective filters

Country Status (1)

Country Link
GB (1) GB384052A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4798850A (en) * 1986-05-19 1989-01-17 National Research Development Corporation Blended-fibre filter material
US6623548B1 (en) * 1998-07-18 2003-09-23 Hollingsworth & Vose Air Filtration Limited Filter materials and methods for the production thereof
WO2020261034A1 (en) 2019-06-28 2020-12-30 3M Innovative Properties Company Filter assembly, prefilter assembly, and respirator including the same
WO2020261150A1 (en) 2019-06-28 2020-12-30 3M Innovative Properties Company Core-sheath fibers, nonwoven fibrous web, and respirator including the same
WO2022091060A1 (en) 2020-11-02 2022-05-05 3M Innovative Properties Company Core-sheath fibers, nonwoven fibrous web, and filtering articles including the same
WO2022130080A1 (en) 2020-12-18 2022-06-23 3M Innovative Properties Company Electrets comprising a substituted cyclotriphosphazene compound and articles therefrom

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4798850A (en) * 1986-05-19 1989-01-17 National Research Development Corporation Blended-fibre filter material
US6623548B1 (en) * 1998-07-18 2003-09-23 Hollingsworth & Vose Air Filtration Limited Filter materials and methods for the production thereof
WO2020261034A1 (en) 2019-06-28 2020-12-30 3M Innovative Properties Company Filter assembly, prefilter assembly, and respirator including the same
WO2020261150A1 (en) 2019-06-28 2020-12-30 3M Innovative Properties Company Core-sheath fibers, nonwoven fibrous web, and respirator including the same
WO2022091060A1 (en) 2020-11-02 2022-05-05 3M Innovative Properties Company Core-sheath fibers, nonwoven fibrous web, and filtering articles including the same
WO2022130080A1 (en) 2020-12-18 2022-06-23 3M Innovative Properties Company Electrets comprising a substituted cyclotriphosphazene compound and articles therefrom

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