William A. Putman
27Patents
9h-index
12Co-inventors
72Inventor score
Filing activity: Jul 9, 1979 → May 17, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4394147A | Internally supported filter | Performing Operations; Transporting | 58 | Expired |
| US5190305A | Luggage handling hand cart | Emerging Cross-Sectional Technologies | 42 | Expired |
| US4356011A | Pocket filter assembly | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5358126A | Hanging-folder file frame | Performing Operations; Transporting | 15 | Expired |
| USD523899S1 | Ink supply bag | General | 14 | Expired |
| US5949461A | Ink refill bottle | Performing Operations; Transporting | 13 | Expired |
| US4247316A | Gas separation filter device having a handle | Performing Operations; Transporting | 12 | Expired |
| USD341689S | Luggage handling hand cart | General | 12 | Expired |
| USD341690S | Luggage handling hand cart with inlay pattern side panels and top | General | 11 | Expired |
| USD355219S | Copyholder | General | 7 | Expired |
| US6682184B2 | Septum seal plug used in inkjet cartridge | Performing Operations; Transporting | 7 | Expired |
| US7488059B1 | Enclosure for ink reservoir bag | Performing Operations; Transporting | 7 | Expired |
| US6776477B2 | Mechanical seal cap for ink-cartridge | Performing Operations; Transporting | 7 | Expired |
| US6666552B2 | Diaphragm/check valve used in inkjet cassette to air removal for extended life storage | Performing Operations; Transporting | 6 | Expired |
| US6814433B2 | Base aperture in ink jet cartridge with irregular edges for breaking surface tension of the ink | Performing Operations; Transporting | 4 | Expired |
| US6659599B2 | Maximum liquid level in dual chamber ink-jet cartridge to control head pressure effect on ink containing porous member in an ink-jet printer | Performing Operations; Transporting | 4 | Expired |
| US7216964B2 | Strain relief for ink cartridge ink supply tube | Performing Operations; Transporting | 3 | Expired |
| US6742879B2 | Dual chamber ink-jet cartridge | Performing Operations; Transporting | 3 | Expired |
| US7377626B2 | External ink supply bag and method of filling the same | Performing Operations; Transporting | 3 | Expired |
| US6685309B2 | Geometric ink channels for ink cartridge | Performing Operations; Transporting | 3 | Expired |
| US7380919B1 | Protector for an inkjet cartridge and method of using the same | Performing Operations; Transporting | 2 | Expired |
| US7384137B2 | Ink cartridge replacement lid | Performing Operations; Transporting | 2 | Expired |
| US6742880B2 | Dual chamber cartridge | Performing Operations; Transporting | 2 | Expired |
| US7159977B1 | Transport protector for an inkjet cartridge | Performing Operations; Transporting | 1 | Expired |
| US6846070B2 | Pressurized ink filling method for dual compartment ink-jet cartridge used in ink-jet printer | Performing Operations; Transporting | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.