Norman F. Rolfe
17Patents
8h-index
19Co-inventors
69Inventor score
Filing activity: Jun 1, 1976 → Dec 10, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4042132A | Spout control apparatus for agricultural machines | Human Necessities | 89 | Expired |
| US4198006A | Magnetic clearance sensor | Physics | 20 | Expired |
| US6815702B2 | Method and apparatus for detection of an edge of a printing plate mounted on a drum imaging system | Performing Operations; Transporting | 16 | Expired |
| US6097418A | Method and apparatus for combining a plurality of images without incurring a visible seam | Electricity | 13 | Expired |
| US4565935A | Logarithmic converter circuit arrangements | Physics | 10 | Expired |
| US5877494A | Beam error correction using movable correction element | Electricity | 10 | Expired |
| US6233038A | Imaging system with integral punch mechanism | Electricity | 9 | Expired |
| US5909323A | Beam alignment correction element assembly | Physics | 9 | Expired |
| US6191897A | Beam alignment correction element assembly | Physics | 7 | Expired |
| US4468608A | Electrochemical sensor instrumentation | Physics | 5 | Expired |
| US6052216A | Laser and beam intensity modulation system for imagesetting device | Electricity | 5 | Expired |
| US6002495A | Imaging system with moveable registration pins | Electricity | 4 | Expired |
| US4289975A | Dissipating electrical charge | Physics | 3 | Expired |
| US5512932A | Method and apparatus for driving a semiconductor laser device | Electricity | 3 | Expired |
| US5892610A | Scanning system with error-correcting deflector | Physics | 3 | Expired |
| US4265536A | Electrical zeroing of light beam | Physics | 1 | Expired |
| US6633024B2 | Scan line to scan line feedforward in an autofocus system of an imaging system | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.