JUNKOSHA INC.
113Patents
40Active
113Granted
48Portfolio score
Filing activity: Dec 23, 1980 → Jul 14, 2023 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4825221A | Directly emitting dielectric transmission line | Electricity | 474 | Expired |
| US4525693A | Transmission line of unsintered PTFE having sintered high density portions | Electricity | 224 | Expired |
| US4382236A | Strip line cable using a porous, crystalline polymer dielectric tape | Emerging Cross-Sectional Technologies | 129 | Expired |
| US4567321A | Flexible flat cable | Electricity | 106 | Expired |
| US4478898A | Laminated porous polytetrafluoroethylene tube and its process of manufacture | Emerging Cross-Sectional Technologies | 81 | Expired |
| US4640866A | Printed circuit board | Emerging Cross-Sectional Technologies | 65 | Expired |
| US5525911A | Vertical probe tester card with coaxial probes | Physics | 58 | Expired |
| US5393929A | Electrical insulation and articles thereof | Emerging Cross-Sectional Technologies | 57 | Expired |
| US4755911A | Multilayer printed circuit board | Emerging Cross-Sectional Technologies | 53 | Expired |
| US4781969A | Flexible printed circuit board | Emerging Cross-Sectional Technologies | 46 | Expired |
| US4677371A | Sensor for detecting the presence and location of a water leak | Physics | 44 | Expired |
| US4707671A | Electrical transmission line | Electricity | 42 | Expired |
| US4490690A | Strip line cable | Electricity | 40 | Expired |
| US5209275A | Liquid dispensing apparatus and method by sensing the type of liquid vapors in the receiver | Physics | 37 | Expired |
| US4710353A | Corrosive liquid leak detecting sensor | Physics | 35 | Expired |
| US4570477A | Leak detecting cable | Physics | 32 | Expired |
| US4576861A | Material for gaseous diffusion electrode | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4791930A | Cooler for human tissue for use during hyperthermia treatment against cancer | Human Necessities | 28 | Expired |
| US4741594A | Optical transmisson line and multiconductor flat cable incorporating same | Physics | 27 | Expired |
| US5194459A | Fluoropolymer insulating material containing hollow microspheres | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4594638A | Liquid leak sensor | Physics | 26 | Expired |
| US5136123A | Multilayer circuit board | Electricity | 25 | Expired |
| US4701576A | Electrical transmission line | Electricity | 24 | Expired |
| US4639693A | Strip line cable comprised of conductor pairs which are surrounded by porous dielectric | Electricity | 24 | Expired |
| US4896664A | Snorkel | Performing Operations; Transporting | 22 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.