Inventor

BRAUN DAVID L

US28 patents

⚠️ This page may combine multiple inventors who share the name “BRAUN DAVID L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BRAUN DAVID L

MINNESOTA MINING & MFG

Fibrous filtration face mask having corrugated polymeric microfiber filter layer

Method of making a corrugated nonwoven web of polymeric microfiber

Particle-loaded microfiber sheet product and respirators made therefrom

Fibrous filtration face mask having corrugated polymeric microfiber filter layer

Filter having corrugated nonwoven webs of polymeric microfiber

Corrugating apparatus

Unidirectional fluid valve

Respiratory mask having a rigid or semi-rigid, insert-molded filtration element and method of making

Powered air respirator and cartridge

Corrugated nonwoven webs of polymeric microfiber

Bonded adsorbent structures and respirators incorporating same

Bonded adsorbent structures and respirators incorporating same

Vapor sampling device

Elastic strap fastener assembly

Elastomeric filtration materials

Multiple fluid pathway energy converter

Controlled sensitivity monitoring devices

Thermal insulation containing corrugated nonwoven web of polymeric microfiber

Apparel containing corrugated microfiber-containing thermal insulation

Vapor sampling and analytical device

3M INNOVATIVE PROPERTIES CO

Corrugated nonwoven webs of polymeric microfiber

Respirator having a compressible press fir filter element

Diffusional gas transfer system and method of using same

Diffusional gas transfer system and method using same

Corrugating apparatus

GOODYEAR AEROSPACE CORP

Process for preparing a fuel tank of polyurethane laminate having contiguous contrasting layers

Polyurethane laminate of contrasting layers and process therefor

GOODYEAR TIRE & RUBBER

Assembling hose units for appliances