Leica AG
54Patents
0Active
54Granted
37Portfolio score
Filing activity: Sep 8, 1989 → Jul 20, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6483948B1 | Microscope, in particular a stereomicroscope, and a method of superimposing two images | Physics | 78 | Expired |
| US5856667A | Apparatus and method for detection and demodulation of an intensity-modulated radiation field | Physics | 65 | Expired |
| US5576715A | Method and apparatus for digital processing in a global positioning system receiver | Physics | 61 | Expired |
| US5764360A | Electro-optical measuring device for absolute distances | Physics | 57 | Expired |
| US5474066A | Non-contact tonometer | Human Necessities | 43 | Expired |
| US5664888A | Zero clearance bearing | Mechanical Engineering; Lighting; Heating | 39 | Expired |
| US5587748A | Joystick override control for an ophthalmic instrument | Human Necessities | 34 | Expired |
| US5471260A | Joystick for an ophthalmic instrument where vertical movement is controlled by rotating the joystick | Human Necessities | 32 | Expired |
| US5833202A | Mechanical fastening system for modular micro-optical elements | Physics | 31 | Expired |
| USD345748S | Microscope stand | General | 28 | Expired |
| USD345747S | Combined microscope stand and body | General | 22 | Expired |
| USD355430S | Stereomicroscope | General | 21 | Expired |
| USD367869S | Stereomicroscope | General | 20 | Expired |
| USD345746S | Microscope | General | 18 | Expired |
| US5270527A | Method for autofocusing of microscopes and autofocusing system for microscopes | Physics | 17 | Expired |
| US5301004A | Method and apparatus for determining the optical properties of a lens | Physics | 17 | Expired |
| US5299481A | Carrier arm seal for a microtome of ultramicrotome | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5355211A | Refractometer subassembly method and apparatus | Physics | 15 | Expired |
| US5701259A | Method for stabilizing the directional display of magnetic compasses | Physics | 13 | Expired |
| US5671039A | Glare tester | Human Necessities | 12 | Expired |
| USD348849S | Hand-held refractometer | General | 11 | Expired |
| US5892576A | Process and device for the electro-optical measurement of distance | Physics | 10 | Expired |
| US5771099A | Optical device for determining the location of a reflective target | Physics | 10 | Expired |
| US4989963A | Binocular telescope with coupled joint focusing and uncoupled separate focusing | Physics | 10 | Expired |
| US5686313A | Method for preparation of microscopic, especially electron-microscopic, slides for the preparation of sections | Emerging Cross-Sectional Technologies | 9 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.