| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US75710577A | 1977-01-05 | 1977-01-05 | |
| US757,105 | 1977-01-05 |
| Publication Number | Publication Date |
|---|---|
| CA1100419Atrue CA1100419A (fr) | 1981-05-05 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA293,496AExpiredCA1100419A (fr) | 1977-01-05 | 1977-12-20 | Systeme et methode d'indication de l'epuisement de l'element filtrant d'un respirateur a vapeur organique |
| Country | Link |
|---|---|
| JP (2) | JPS5385993A (fr) |
| BR (1) | BR7800046A (fr) |
| CA (1) | CA1100419A (fr) |
| DE (1) | DE2758603A1 (fr) |
| GB (1) | GB1554542A (fr) |
| HK (1) | HK22181A (fr) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5634426A (en)* | 1995-02-22 | 1997-06-03 | Tomlinson; Bruce | Absorption depletion indicators for anesthetic gas administration systems |
| US9751038B2 (en) | 2013-03-15 | 2017-09-05 | 3M Innovative Properties Company | End of service life indicating systems for layered filter cartridges |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4326514A (en)* | 1980-06-20 | 1982-04-27 | Minnesota Mining And Manufacturing Company | Cartridge respirator with service life indicator |
| US4365627A (en)* | 1980-09-22 | 1982-12-28 | The Dow Chemical Company | Filter-type respirator canister |
| GB2119659B (en)* | 1982-04-28 | 1985-10-02 | Mine Safety Appliances Co | Breathing device having irreversible moisture indicator |
| DE3445639C2 (de)* | 1984-12-14 | 1987-02-12 | Drägerwerk AG, 2400 Lübeck | Kolorimetrischer Indikator zur Anzeige des Erschöpfungszustandes von Gasfiltern |
| DE3610492A1 (de)* | 1986-03-27 | 1987-10-01 | Draegerwerk Ag | Atemschutzgeraet |
| US4886058A (en)* | 1988-05-17 | 1989-12-12 | Minnesota Mining And Manufacturing Company | Filter element |
| WO1994019056A1 (fr)* | 1993-02-27 | 1994-09-01 | Paul Hartmann Ag | Element respiratoire protecteur |
| RU2108821C1 (ru)* | 1994-09-13 | 1998-04-20 | Войсковая часть 20914 | Регенеративный патрон |
| US7442237B1 (en)* | 2004-09-16 | 2008-10-28 | The United States Of America As Represented By The Secretary Of The Army | Multi-agent end-of-service-life indicator for respirator filters |
| US8955515B2 (en)* | 2009-10-23 | 2015-02-17 | 3M Innovative Properties Company | Patterned chemical sensor having inert occluding layer |
| US9192795B2 (en) | 2011-10-07 | 2015-11-24 | Honeywell International Inc. | System and method of calibration in a powered air purifying respirator |
| US9808656B2 (en) | 2012-01-09 | 2017-11-07 | Honeywell International Inc. | System and method of oxygen deficiency warning in a powered air purifying respirator |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1725893A (en)* | 1924-12-05 | 1929-08-27 | Mine Safety Appliances Co | Indicating gas-mask canister |
| US3966440A (en)* | 1975-06-03 | 1976-06-29 | Catalyst Research Corporation | Colorimetric vinyl chloride indicator |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5634426A (en)* | 1995-02-22 | 1997-06-03 | Tomlinson; Bruce | Absorption depletion indicators for anesthetic gas administration systems |
| US9751038B2 (en) | 2013-03-15 | 2017-09-05 | 3M Innovative Properties Company | End of service life indicating systems for layered filter cartridges |
| Publication number | Publication date |
|---|---|
| JPS6218156U (fr) | 1987-02-03 |
| JPS5385993A (en) | 1978-07-28 |
| BR7800046A (pt) | 1978-08-15 |
| DE2758603A1 (de) | 1978-07-20 |
| GB1554542A (en) | 1979-10-24 |
| HK22181A (en) | 1981-05-29 |
| Publication | Publication Date | Title |
|---|---|---|
| CA1100419A (fr) | Systeme et methode d'indication de l'epuisement de l'element filtrant d'un respirateur a vapeur organique | |
| US4530706A (en) | Respirator cartridge end-of-service life indicator | |
| US4684380A (en) | Colorimetric indicator for the indication of the exhaustion of gas filters | |
| US3966440A (en) | Colorimetric vinyl chloride indicator | |
| US4326514A (en) | Cartridge respirator with service life indicator | |
| US7442237B1 (en) | Multi-agent end-of-service-life indicator for respirator filters | |
| US4365627A (en) | Filter-type respirator canister | |
| US9011584B2 (en) | End of service life indicator for respirator | |
| US20070137491A1 (en) | End of service and residual life indicator | |
| Lamb et al. | The Removal of Carbon Monoxide from Air. | |
| US2487077A (en) | Colorimetric gas detection | |
| US5634426A (en) | Absorption depletion indicators for anesthetic gas administration systems | |
| DE2136968C3 (de) | Brandmeldeanlagen | |
| US3996007A (en) | Time-temperature integrating indicator | |
| US20080173817A1 (en) | Carbon monoxide (CO) microsir sensor system | |
| EP2463650B1 (fr) | Matériaux indicateur et dispositif indicateur comprenant ledit matériau indicateur et procédé pour sa fabrication. | |
| US4692309A (en) | Diffusion sample collector for gaseous media | |
| EP1165186B1 (fr) | Procede et dispositif capteur pour la detection de gaz ou de vapeurs contenus dans l'air | |
| US3890245A (en) | Procedure for increasing the chemisorption capacity of carbon with regard to gases | |
| JP4627615B2 (ja) | 空気または他の気体から汚染物質を濾過するための濾過材および濾過方法 | |
| EP0155991A1 (fr) | Appareil respiratoire pour la protection contre le monoxyde de carbone | |
| RU2833454C2 (ru) | Индикаторный патрон к промышленному фильтрующему противогазу | |
| GB2119659A (en) | Breathing device having irreversible moisture indicator | |
| DE19911869B4 (de) | Neuartige Atemschutzmaske mit Sensor-Mikrosystem und Verfahren zum Betreiben derselben | |
| Tanaka et al. | Efficiency of respirator canisters with methyl bromide |
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |