James R. Hubbard
21Patents
7h-index
21Co-inventors
65Inventor score
Filing activity: Oct 6, 1975 → Sep 23, 1993
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4776343A | Disposable pressure transducer for use with a catheter | Human Necessities | 75 | Expired |
| US5279308A | Intrauterine pressure catheter system | Human Necessities | 40 | Expired |
| US4017871A | Marker with three phase ink circuit | Physics | 39 | Expired |
| US4497468A | Catheter patency flush flow controller | Human Necessities | 34 | Expired |
| US5388579A | Fetal electrode product with channeled drive mechanism and improved torque characteristics | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5377677A | Packaging system for a fetal electrode | Human Necessities | 7 | Expired |
| USD279407S | Catheter flush flow control device | General | 7 | Expired |
| US4100549A | Disposable marker | Performing Operations; Transporting | 6 | Expired |
| US4017870A | Truncated ball pen | Physics | 6 | Expired |
| US4316197A | Easily removable instrument pen tip | Physics | 5 | Expired |
| US4016572A | Thermographic stylus with inherent pressure control | Physics | 4 | Expired |
| US3983569A | Instrument pen with integral pen arm attachment means | Physics | 3 | Expired |
| US4337471A | Disposable markers adapted for constant width and close proximity tracing | Performing Operations; Transporting | 2 | Expired |
| US4233609A | Disposable instrument pen with integral spring member | Physics | 2 | Expired |
| US4633275A | Means for mounting a pen on a chart recorder | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4129876A | Apparatus for mounting a marker pen to a tubular recorder pen arm | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4589470A | Method and apparatus for cooling a moving chill substrate | Performing Operations; Transporting | 2 | Expired |
| US4854762A | Disposable marker and adapter for pen-driven integrator | Performing Operations; Transporting | 2 | Expired |
| US4564852A | Pens for low torque chart recorders | Physics | 1 | Expired |
| US4307410A | Disposable instrument pen with integral spring member | Physics | 1 | Expired |
| US4573060A | Instrument marker pen and pen arm assembly | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.