Mark Products, Inc.
17Patents
0Active
17Granted
31Portfolio score
Filing activity: Dec 12, 1974 → Mar 11, 1999
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3976351A | Electrical connector | Electricity | 36 | Expired |
| US6324917A | Combination air pipe connector and flow measurement device | Physics | 23 | Expired |
| US4787702A | Fiber optic cable and method of making the same | Physics | 21 | Expired |
| US4285054A | Geophone | Physics | 21 | Expired |
| US4238845A | Geophone springs | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4438292A | Waterproof housing assembly for geophones | Physics | 12 | Expired |
| US4477136A | Takeout connector | Electricity | 11 | Expired |
| US4249788A | Waterproof multiple wire cable connecting device | Electricity | 10 | Expired |
| US4811311A | Seismic detector assembly having polarized terminals | Physics | 9 | Expired |
| US4447104A | Apparatus for attaching a multiconductor cable to a housing | Electricity | 8 | Expired |
| US5783747A | Fluid analyzing detector for detecting the presence of a particular analyte in a fluid medium | Physics | 6 | Expired |
| US4809245A | Seismic detector housing assembly | Physics | 5 | Expired |
| US4787239A | Sensor for hand held gas chromatograph | Physics | 5 | Expired |
| US5757988A | Optical fiber sensor utilizing a swellable detector material | Physics | 4 | Expired |
| US4378274A | Method of electroplating very thin metal parts | Chemistry; Metallurgy | 3 | Expired |
| US4525814A | Leakage testing cable connector network | Physics | 3 | Expired |
| US6009217A | Optical fiber sensor for distinguishing between the presence of liquid and vapor phases of a substance | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.