1
Seyed Abolhassan Angadjivand, Tammy M Chalmers, James F Dyrud, Simon A Mortimer, Scott J Tuman, Cynthia Y Tamaki, Graham J Bostock: Respiratory mask having comfortable inner cover web. 3M Innovative Properties Company, Cecilia Hill, Karl G Hanson, March 28, 2000: US06041782 (63 worldwide citation)

A respiratory mask 1 has a molded, cup-shaped, shape-retaining shell 10 on the concave side of which is a layer of filter material 11 and, on the concave side of the filter material, without any intermediate shape-retaining layer, a layer of nonwoven material 12. The layer of filter material 11 and ...


2
Graham J Bostock, John W Bryant, Desmond T Curran, Christopher P Henderson, Dennis L Krueger, James F Dyrud: Flat-folded personal respiratory protection devices and processes for preparing same. 3M Innovative Properties Company, James A Rogers, September 26, 2000: US06123077 (50 worldwide citation)

Fold-flat personal respiratory protection devices are provided. The devices have a flat central portion having first and second edges, a flat first member joined to the first edge of the central portion through either a fold-line, seam, weld or bond, said fold, bond, weld or seam of the first member ...


3
Graham J Bostock, John W Bryant, Desmond T Curran, Christopher P Henderson, Dennis L Krueger, James F Dyrud: Flat-folded personal respiratory protection devices and processes for preparing same. 3M Innovative Properties Company, Karl G Hanson, November 26, 2002: US06484722 (39 worldwide citation)

Fold-flat personal respiratory protection devices are provided. The devices have a flat central portion having first and second edges, a flat first member joined to the first edge of the central portion through either a fold-line, seam, weld or bond, said fold, bond, weld or seam of the first member ...


4
Graham J Bostock, John W Bryant, Desmond T Curran, Christopher P Henderson, Dennis L Krueger, James F Dyrud: Flat-folded personal respiratory protection devices and processes for preparing same. 3M Innovative Properties Company, Karl G Hanson, David R Cleveland, May 27, 2003: US06568392 (24 worldwide citation)

Fold-flat personal respiratory protection devices are provided. The devices have a flat central portion having first and second edges, a flat first member joined to the first edge of the central portion through either a fold-line, seam, weld or bond, said fold, bond, weld or seam of the first member ...


5
Graham J Bostock, John W Bryant, Desmond T Curran, Christopher P Henderson, Dennis L Krueger, James F Dyrud: Flat-folded personal respiratory protection devices and processes for preparing same. 3M Innovative Properties Company, Karl G Hanson, May 3, 2005: US06886563 (22 worldwide citation)

Fold-flat personal respiratory protection devices that have a flat substantially rectangular central portion having first and second edges, at flat first member joined to the first edge of the central portion through either a fold-line, seam, weld or bond, said fold, bond, weld or seam of the first ...


6
Graham J Bostock, John W Bryant, Desmond T Curran, Christopher P Henderson, Dennis L Krueger, James F Dyrud: Flat-folded personal respiratory protection devices and processes for preparing same. 3M Innovative Properties Company, Karl G Hanson, David R Cleveland, March 25, 2003: US06536434 (17 worldwide citation)

Fold-flat personal respiratory protection devices are provided. The devices have a flat central portion having first and second edges, a flat first member joined to the first edge of the central portion through either a fold-line, seam, weld or bond, said fold, bond, weld or seam of the first member ...


7
Graham J Bostock, John W Bryant, Desmond T Curran, Christopher P Henderson, Dennis L Krueger, James F Dyrud: Processes for preparing flat-folded personal respiratory protection devices. 3M Innovative Properties Company, Karl G Hanson, David R Cleveland, April 6, 2004: US06715489 (17 worldwide citation)

Fold-flat personal respiratory protection devices are provided. The devices have a flat central portion having first and second edges, a flat first member joined to the first edge through either a fold-line, seam, weld or bond that is substantially coextensive with the first edge, and a flat second ...


8
Graham J Bostock, John W Bryant, Desmond T Curran, Christopher P Henderson, Dennis L Krueger, James F Dyrud: Method of making a flat-folded personal respiratory protection device. 3M Innovative Properties Company, Karl G Hanson, April 20, 2004: US06722366 (15 worldwide citation)

A method of making a personal respiratory protection device. The method comprises: (a) forming a multi-layered structure that comprises a first cover web, a filtration layer that comprises a web that contains electrically-charged microfibers, and a second cover web; and (b) adapting the multi-layere ...


9
Graham J Bostock, John W Bryant, Desmond T Curran, Christopher P Henderson, Dennis L Krueger, James F Dyrud: Flat-folded personal respiratory protection devices and processes for preparing same. 3M Innovative Properties Company, Karl G Hanson, July 4, 2006: US07069930 (13 worldwide citation)

A personal respiratory protection device that comprises a mask body and an exhalation valve that is secured to the mask body. The mask body includes (i) a flat central panel; (ii) a flat first panel joined to the central panel through a fold-line, seam weld, or bond, the fold-line, seam, weld or bon ...


10
Graham J Bostock, John W Bryant, Desmond T Curran, Christopher P Henderson, Dennis L Krueger, James F Dyrud: Flat-folded personal respiratory protection devices. 3M Innovative Properties Company, Karl G Hanson, April 3, 2012: US08146594 (3 worldwide citation)

A personal respiratory protection device that includes a multi-layered structure and first and second means for attaching a headband. The multilayered structure includes a filter medium and is divided into a flat upper panel, a flat non-rectangular central panel, and a lower panel. The central panel ...