DYNAMIC AIR INC
49Patents
15Active
49Granted
42Portfolio score
Filing activity: Mar 31, 1975 → Oct 28, 2020 · 4 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6502865B1 | Pipe coupler and method of coupling | Emerging Cross-Sectional Technologies | 51 | Expired |
| US5913602A | On-the-go mixing system | Performing Operations; Transporting | 34 | Expired |
| US4252479A | Rotary diverter valves | Performing Operations; Transporting | 26 | Expired |
| US4836834A | Air filter with back flow cleaning | Performing Operations; Transporting | 23 | Expired |
| US4200412A | Control for pneumatic conveying system | Performing Operations; Transporting | 21 | Expired |
| US5295659A | Shaft seal for butterfly valve | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US5393035A | Flow control valve | Emerging Cross-Sectional Technologies | 20 | Expired |
| US3952956A | Bin aerator | Performing Operations; Transporting | 19 | Expired |
| US6364520B1 | Conduction mixers | Performing Operations; Transporting | 19 | Expired |
| US4836499A | Butterfly valves | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4976288A | Tubing bend for pneumatic conveying system | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US5274201A | Noise muffler for an air blower | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US6074136A | Multi-port pneumatic switch | Performing Operations; Transporting | 13 | Expired |
| US7438090B2 | Booster valve | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4313699A | Quick mount high pressure booster valves | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4264244A | Diverter valves | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6007234A | Fluid injector | Performing Operations; Transporting | 12 | Expired |
| US7267475B2 | Blender | Performing Operations; Transporting | 11 | Expired |
| US5921369A | Limp liner for conveying apparatus | Performing Operations; Transporting | 11 | Expired |
| US4944598A | Continuous flow air blender for dry granular materials | Performing Operations; Transporting | 11 | Expired |
| US6030152A | Pneumatic switch with repositionable conduits | Performing Operations; Transporting | 9 | Expired |
| US6305412A | Double acting pressure relief valve with low pressure seal | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5749609A | Flexible connector with flow passage integrity | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US8256448B2 | High temperature butterfly valves | Emerging Cross-Sectional Technologies | 7 | Active |
| US4134466A | Weigh jet assemblies | Physics | 7 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.