U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Combined anti fog and anti glare features for face masks

Patent 5813398 Issued on September 29, 1998. Estimated Expiration Date: Icon_subject March 26, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3888246

3890966

Means for preventing fogging of optical aids used by the wearer of a surgical mask
Patent #: 3974829
Issued on: 08/17/1976
Inventor: Tate, Jr.

Surgical mask with vapor barrier
Patent #: 4037593
Issued on: 07/26/1977
Inventor: Tate, Jr.

Operating room face mask
Patent #: 4300549
Issued on: 11/17/1981
Inventor: Parker

Medical face mask
Patent #: 4323063
Issued on: 04/06/1982
Inventor: Fisichella

Anti-fogging surgical mask
Patent #: 4419993
Issued on: 12/13/1983
Inventor: Petersen

Surgical face mask with improved moisture barrier
Patent #: 4635628
Issued on: 01/13/1987
Inventor: Hubbard ,   et al.

Conformable surgical face mask
Patent #: 4662005
Issued on: 05/05/1987
Inventor: Grier-Idris

Filter mask
Patent #: 4688566
Issued on: 08/25/1987
Inventor: Boyce

More ...

Inventors

Assignee

Application

No. 828252 filed on 03/26/1997

US Classes:

128/201.17, Mask with porous lower filtering portion and impervious upper portion shielding user's eyeglasses from exhaled breath128/201.15, Means for keeping viewing member (e.g., eyeglass, transparent face shield, etc.) clear128/206.13, Mask attached to ear128/206.19, Body of mask, other than viewing means, formed of porous filter material (e.g., surgical mask formed entirely of cloth, etc.)128/206.23Mask/eyepiece sealing structure

Examiners

Primary: Yu, Mickey
Assistant: Nguyen, Dinh Q.

Attorney, Agent or Firm

International Classes

A62B 018/08
A62B 007/00
A62B 023/02

Abstract

A face mask having a filter body for covering the nose and mouth of a wearer. Ear loops, head bands, surgical ties and other appropriate devices may be used to secure the face mask to the face of the wearer. The filter body is preferably formed from one or more layers of non-woven material. A fluid impervious film layer is attached to an exterior portion of the filter body to prevent fogging of eye glasses or an eyepiece for scientific equipment. A non-woven material layer may be placed over the fluid impervious film to minimize or eliminate glare and reflections from the mask. The non-woven material layer may also protect the fluid impervious film layer during fabrication of the associated mask. For some applications, one or more layers of darkened material may be placed on portions of the mask to reduce or eliminate reflections and glare. The layers of darkened material may be used as edge bindings or to cover the fluid impervious film. The fluid impervious film may have a colored tint or a matte finish to reduce reflection and glare, particularly if the non-woven material layer is not placed over the fluid impervious film.

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