Mark Belcher
12Patents
5h-index
13Co-inventors
63Inventor score
Filing activity: Dec 8, 1976 → Mar 27, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4860644A | Articulatable fume exhauster trunk | Performing Operations; Transporting | 1,028 | Expired |
| US8491684B2 | Filter cartridge; components thereof; and methods | Performing Operations; Transporting | 13 | Active |
| US4792344A | Air filtering method and apparatus | Performing Operations; Transporting | 12 | Expired |
| US8741018B2 | Filter cartridge with centerboard, dust collectors, and methods | Emerging Cross-Sectional Technologies | 8 | Active |
| US4083273A | Hole punching method and apparatus | Emerging Cross-Sectional Technologies | 5 | Expired |
| US8361182B2 | Filter cartridge with centerboard, dust collectors, and methods | Emerging Cross-Sectional Technologies | 3 | Active |
| US9751036B2 | Filter cartridge; components thereof; and methods | Performing Operations; Transporting | 1 | Active |
| US10744445B2 | Filter cartridge; components thereof; and methods | Performing Operations; Transporting | 1 | Active |
| US9446340B2 | Air filter cartridge | Performing Operations; Transporting | 1 | Active |
| US11623172B2 | Filter cartridge; components thereof; and methods | Performing Operations; Transporting | 0 | Active |
| US12370486B2 | Filter cartridge; components thereof; and methods | Performing Operations; Transporting | 0 | Active |
| US9415336B2 | Filter cartridge with centerboard, dust collectors, and methods | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.