David L. Braun
26Patents
16h-index
8Co-inventors
74Inventor score
Filing activity: Mar 27, 1974 → Oct 5, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3971373A | Particle-loaded microfiber sheet product and respirators made therefrom | Emerging Cross-Sectional Technologies | 332 | Expired |
| US4790306A | Respiratory mask having a rigid or semi-rigid, insert-molded filtration element and method of making | Performing Operations; Transporting | 104 | Expired |
| US5656368A | Fibrous filtration face mask having corrugated polymeric microfiber filter layer | Emerging Cross-Sectional Technologies | 79 | Expired |
| US5620545A | Method of making a corrugated nonwoven web of polymeric microfiber | Emerging Cross-Sectional Technologies | 71 | Expired |
| US4934362A | Unidirectional fluid valve | Emerging Cross-Sectional Technologies | 70 | Expired |
| US5033465A | Bonded adsorbent structures and respirators incorporating same | Performing Operations; Transporting | 69 | Expired |
| US4462399A | Powered air respirator and cartridge | Emerging Cross-Sectional Technologies | 66 | Expired |
| US5804295A | Fibrous filtration face mask having corrugated polymeric microfiber filter layer | Emerging Cross-Sectional Technologies | 46 | Expired |
| US5078132A | Bonded adsorbent structures and respirators incorporating same | Performing Operations; Transporting | 46 | Expired |
| US5763078A | Filter having corrugated nonwoven webs of polymeric microfiber | Emerging Cross-Sectional Technologies | 45 | Expired |
| US3950980A | Vapor sampling device | Physics | 37 | Expired |
| US5035240A | Elastomeric filtration materials | Textiles; Paper | 34 | Expired |
| US5052084A | Elastic strap fastener assembly | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5753343A | Corrugated nonwoven webs of polymeric microfiber | Emerging Cross-Sectional Technologies | 32 | Expired |
| USD371587S | Goal for football practice | General | 18 | Expired |
| US5830311A | Corrugating apparatus | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4583911A | Multiple fluid pathway energy converter | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4668535A | Process for preparing a fuel tank of polyurethane laminate having contiguous contrasting layers | Performing Operations; Transporting | 13 | Expired |
| US6089252A | Manifold for auxiliary fuel tank | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4102201A | Vapor sampling and analytical device | Physics | 11 | Expired |
| US5639700A | Thermal insulation containing corrugated nonwoven web of polymeric microfiber | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4565729A | Polyurethane laminate of contrasting layers and process therefor | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4158958A | Controlled sensitivity monitoring devices | Physics | 7 | Expired |
| US4262408A | Assembling hose units for appliances | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5961778A | Corrugating apparatus | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.