GB435168A - Improvements in or relating to the manufacture of filtering masses for removing aerosols and like fine suspended matter from the atmosphere - Google Patents

Improvements in or relating to the manufacture of filtering masses for removing aerosols and like fine suspended matter from the atmosphere

Info

Publication number
GB435168A
GB435168A GB14048/35A GB1404835A GB435168A GB 435168 A GB435168 A GB 435168A GB 14048/35 A GB14048/35 A GB 14048/35A GB 1404835 A GB1404835 A GB 1404835A GB 435168 A GB435168 A GB 435168A
Authority
GB
United Kingdom
Prior art keywords
relating
atmosphere
manufacture
suspended matter
fine suspended
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
GB14048/35A
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.)
Pirelli and C SpA
Original Assignee
Pirelli SpA
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 Pirelli SpA filed Critical Pirelli SpA
Publication of GB435168A publication Critical patent/GB435168A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Filtering Materials (AREA)

Abstract

435,168. Filtering gases. SOC. ITALIANA PIRELLI, 21, Via Fabio Filzi, Milan, Italy. May 13, 1935, No. 14048. Convention date, May 19, 1934. [Class 8 (ii)] Auxiliary neutral granular substance is introduced into a previously formed felt of fibrous material, e.g. by depositing a layer of material on the felt and shaking, or by immersing the felt in a solution or suspension of the neutral substance. Specifications 380,965, 395,918, 433,186, 433,190, and 434,700 are referred to.
GB14048/35A 1934-05-19 1935-05-13 Improvements in or relating to the manufacture of filtering masses for removing aerosols and like fine suspended matter from the atmosphere Expired GB435168A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT435168X 1934-05-19

Publications (1)

Publication Number Publication Date
GB435168A true GB435168A (en) 1935-09-16

Family

ID=11255082

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14048/35A Expired GB435168A (en) 1934-05-19 1935-05-13 Improvements in or relating to the manufacture of filtering masses for removing aerosols and like fine suspended matter from the atmosphere

Country Status (1)

Country Link
GB (1) GB435168A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573964A (en) * 1945-04-20 1951-11-06 Green Henry Lionel Filter
US2881771A (en) * 1954-12-20 1959-04-14 Eastman Kodak Co Cigarette filters
CN111921057A (en) * 2020-08-12 2020-11-13 西京学院 Have two-chamber formula low noise breathing machine structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573964A (en) * 1945-04-20 1951-11-06 Green Henry Lionel Filter
US2881771A (en) * 1954-12-20 1959-04-14 Eastman Kodak Co Cigarette filters
CN111921057A (en) * 2020-08-12 2020-11-13 西京学院 Have two-chamber formula low noise breathing machine structure
CN111921057B (en) * 2020-08-12 2023-06-27 西京学院 Low noise breathing machine structure with two-chamber

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