Williams; Elfed I.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Williams; Elfed I..The latest application filed is for "method of making a filtering face mask that has an exhalation valve attached thereto".

Company Profile

0.11.5

Williams; Elfed I. - Dyfed GB
Williams; Elfed I. - Swansea GB
Williams, Elfed I. - Pontarddulais GB
Williams; Elfed I. - Wales GB
Williams; Elfed I. - Llanelli GB

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Method of making a filter cartridge using a thermoforming step Grant 7,497,217 - Viner , et al. March 3, 2	2009-03-03
Method of making a filtering face mask that has an exhalation valve attached thereto Grant 7,069,931 - Curran , et al. July 4, 2	2006-07-04
Manner of attaching component elements to filtration material such as may be utilized in respiratory masks Grant 7,007,695 - Curran , et al. March 7, 2	2006-03-07
Method of making a filtering face mask that has an exhalation valve attached thereto App 20050252839 - Curran, Desmond T. ; et al.	2005-11-17
Manner of attaching component elements to filtration material such as may be utilized in respiratory masks Grant 6,959,709 - Curran , et al. November 1, 2	2005-11-01
Method of making a filter cartridge that uses thermoforming step App 20050161045 - Viner, Andrew S. ; et al.	2005-07-28
Filter element that has a thermo-formed housing around filter material Grant 6,874,499 - Viner , et al. April 5, 2	2005-04-05
Filter element that has a thermo-formed housing around filter material App 20040055604 - Viner, Andrew S. ; et al.	2004-03-25
Manner of attaching component elements to filtration material such as may be utilized in respiratory masks App 20040035426 - Curran, Desmond T. ; et al.	2004-02-26
Manner of attaching component elements to filtration material such as may be utilized in respiratory masks Grant 6,604,524 - Curran , et al. August 12, 2	2003-08-12
Manner of attaching component elements to filtration material such as may be utilized in respiratory masks App 20010029952 - Curran, Desmond T. ; et al.	2001-10-18
Protective garments incorporating bands of welded or adhesively-bonded elastomeric material Grant 6,286,144 - Henderson , et al. September 11, 2	2001-09-11
Multi-part headband and respirator mask assembly and process for making same Grant 6,148,817 - Bryant , et al. November 21, 2	2000-11-21
Respiratory masks having valves and other components attached to the mask by a printed patch of adhesive Grant 6,125,849 - Williams , et al. October 3, 2	2000-10-03
Elastomeric composite headband Grant 6,070,579 - Bryant , et al. June 6, 2	2000-06-06
Multi-part headband and respirator mask assembly and process for making same Grant 5,724,677 - Bryant , et al. March 10, 1	1998-03-10

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