James E. Ferris
17Patents
13h-index
6Co-inventors
71Inventor score
Filing activity: Dec 17, 1976 → May 22, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4224032A | Method and apparatus for chemical analysis | Emerging Cross-Sectional Technologies | 83 | Expired |
| US5070917A | Pressurized fluid-drivable device for injecting a treatment liquid stored therein into a tire or other enclosed space | Mechanical Engineering; Lighting; Heating | 53 | Expired |
| US4745772A | Air conditioner auxiliary filter/drier refrigerant and chemical additive transfer device | Mechanical Engineering; Lighting; Heating | 38 | Expired |
| US5967204A | Refrigerant fluid injection apparatus | Mechanical Engineering; Lighting; Heating | 32 | Expired |
| USD249708S | Sample cup for analysis of biological fluids | General | 30 | Expired |
| US6385986B1 | Refrigerant charging hose assembly | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US6722141B2 | Apparatus and methods for placing an additive fluid into a refrigerant circuit | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US4142656A | Drop former utilizing gas pressure | Performing Operations; Transporting | 23 | Expired |
| US6609385B1 | Refrigerant charging/pressure testing hose assembly | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US6796340B1 | Method and dispenser for pressurized containers used with automobile air conditioning systems | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6481221B2 | Apparatus and methods for placing an additive fluid into a refrigerant circuit | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4770044A | Air conditioner test gauge with pressure zone markings | Physics | 15 | Expired |
| US6438970B1 | Apparatus methods and compositions for placing additive fluids into a refrigerant circuit | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4777828A | Removable, in-place refrigerant pressure check gauge | Physics | 11 | Expired |
| US4693112A | Air conditioner refrigerant check gauge insert convertible to a tire check gauge | Physics | 11 | Expired |
| US4599903A | Air conditioner refrigerant check guide | Physics | 6 | Expired |
| US4829829A | Air conditioner test gauge with pressure zone markings | Emerging Cross-Sectional Technologies | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.