Patent · US Active

Respirator valve

US11445771B2 · kind B2 · utility

0Cited by

29References

19Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Christopher P. Henderson · Durham, GB
Reyad A. Abdulqader · Stockton-on-Tees, GB
James J. May · Kenilworth, GB
Mark A. J. Fernandes · Nesbitt, GB
Daniel Paul Jenkins · Hamilton, BM
Stuart James King · Leek Wootton, GB
Elliott J. Baxter · Royal Leamington Spa, GB
Mario-Alexander Lehmann · Frechen, DE
Andrea Lejewski · Münstertal, DE

Key dates

Filing date	Dec 2, 2015
Grant date	Sep 20, 2022
Priority date	—
Expiry date	Apr 13, 2037

Classification

Technology area (CPC A)Human Necessities
CPC primaryA41D2400/44
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A personal respiratory protection device comprising a main body (12) carrying an exhalation valve (28), the valve (28) having a grip region (29) which is grippable in use by the user, the grip region (29) being configured to indicate to the user that the valve (28) is to be gripped during opening, donning and doffing of the device.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.