The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 11, 2005
Filed:
May. 07, 2004
Marvin E. Jones, Grant Township, MN (US);
Christopher S. Lyons, St. Paul, MN (US);
David B. Redmond, St. Paul, MN (US);
Jeffrey L. Solomon, Vadnais Heights, MN (US);
Seyed Abolhassan Angadjivand, Woodbury, MN (US);
Marvin E. Jones, Grant Township, MN (US);
Christopher S. Lyons, St. Paul, MN (US);
David B. Redmond, St. Paul, MN (US);
Jeffrey L. Solomon, Vadnais Heights, MN (US);
Seyed Abolhassan Angadjivand, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A method of making a respirator, which method includes placing an electret in a respirator body that is adapted to fit over the nose and mouth of a wearer. The electret is disposed in the respirator body such that air passes through it before being inhaled by a respirator wearer. The electret includes a nonwoven web that has fluorinated polymeric microfibers and that has at least about 25% atomic fluorine as detected by ESCA and a CF:CFratio of at least about 0.45.