Braun, David L.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Braun, David L..The latest application filed is for "respirator having a compressible press fit filter element".
- Braun, David L. - City of Lake Elmo MN
- Braun; David L. - Woodbury MN
- Braun; David L. - Lake Elmo MN
- Braun; David L. - St. Paul MN
| Patent | Date |
|---|---|
| Respirator having a compressible press fit filter element App 20010013347 - Rekow, Peter O. ; et al. | 2001-08-16 |
| Corrugated nonwoven webs of polymeric microfiber Grant 6,010,766 - Braun , et al. January 4, 2 | 2000-01-04 |
| Diffusional gas transfer system and method using same Grant 5,976,220 - Braun , et al. November 2, 1 | 1999-11-02 |
| Corrugating apparatus Grant 5,830,311 - Braun , et al. November 3, 1 | 1998-11-03 |
| Fibrous filtration face mask having corrugated polymeric microfiber filter layer Grant 5,804,295 - Braun , et al. September 8, 1 | 1998-09-08 |
| Filter having corrugated nonwoven webs of polymeric microfiber Grant 5,763,078 - Braun , et al. June 9, 1 | 1998-06-09 |
| Corrugated nonwoven webs of polymeric microfiber Grant 5,753,343 - Braun , et al. May 19, 1 | 1998-05-19 |
| Fibrous filtration face mask having corrugated polymeric microfiber filter layer Grant 5,656,368 - Braun , et al. August 12, 1 | 1997-08-12 |
| Thermal insulation containing corrugated nonwoven web of polymeric microfiber Grant 5,639,700 - Braun , et al. June 17, 1 | 1997-06-17 |
| Method of making a corrugated nonwoven web of polymeric microfiber Grant 5,620,545 - Braun , et al. April 15, 1 | 1997-04-15 |
| Bonded adsorbent structures and respirators incorporating same Grant 5,078,132 - Braun , et al. January 7, 1 | 1992-01-07 |
| Elastic strap fastener assembly Grant 5,052,084 - Braun October 1, 1 | 1991-10-01 |
| Elastomeric filtration materials Grant 5,035,240 - Braun , et al. July 30, 1 | 1991-07-30 |
| Bonded adsorbent structures and respirators incorporating same Grant 5,033,465 - Braun , et al. July 23, 1 | 1991-07-23 |
| Unidirectional fluid valve Grant 4,934,362 - Braun June 19, 1 | 1990-06-19 |
| Respiratory mask having a rigid or semi-rigid, insert-molded filtration element and method of making Grant 4,790,306 - Braun , et al. December 13, 1 | 1988-12-13 |
| Multiple fluid pathway energy converter Grant 4,583,911 - Braun April 22, 1 | 1986-04-22 |
| Powered air respirator and cartridge Grant 4,462,399 - Braun July 31, 1 | 1984-07-31 |
| Particle-loaded microfiber sheet product and respirators made therefrom Grant 3,971,373 - Braun July 27, 1 | 1976-07-27 |
| Vapor sampling device Grant 3,950,980 - Braun , et al. April 20, 1 | 1976-04-20 |
| Gas detection device Grant 3,924,219 - Braun December 2, 1 | 1975-12-02 |
| Solids Dispenser Having Magnetic Valve In Throat Grant 3,661,302 - Braun May 9, 1 | 1972-05-09 |
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