World Precision Instruments
22Patents
4Active
22Granted
37Portfolio score
Filing activity: Feb 17, 1989 → Apr 1, 2021 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5827420A | Method and apparatus for the generation of nitric oxide | Human Necessities | 470 | Expired |
| US5416879A | Apparatus and method for measuring light absorption in small aqueous fluid samples | Physics | 86 | Expired |
| US5444807A | Micro chemical analysis employing flow through detectors | Physics | 70 | Expired |
| US5294325A | Miniaturized fluid conveying device and methods of use thereof | Physics | 67 | Expired |
| US6749834B2 | Methods and apparatus for therapeutic treatment of respiratory, cardiac and other pathologies | Human Necessities | 52 | Expired |
| US5636303A | Filterless chromatically variable light source | Physics | 50 | Expired |
| US6020207A | Optical analysis technique and sensors for use therein | Physics | 46 | Expired |
| US5570447A | Aqueous fluid core waveguide | Physics | 36 | Expired |
| US6016372A | Chemical sensing techniques employing liquid-core optical fibers | Physics | 30 | Expired |
| US5604587A | Long capillary waveguide raman cell | Physics | 25 | Expired |
| US6104485A | Method and apparatus for optical measurement of very small fluid samples | Physics | 23 | Expired |
| US7914852B2 | High temperature coating techniques for amorphous fluoropolymers | Physics | 21 | Active |
| US5980036A | Eyeglass devices with removable auxiliary lenses or frames | Physics | 20 | Expired |
| US6385380B1 | Hollow optical waveguide for trace analysis in aqueous solutions | Physics | 20 | Expired |
| US6011882A | Chemical sensing techniques employing liquid-core optical fibers | Physics | 17 | Expired |
| US4912060A | Method and apparatus for electrical testing of membranes | Physics | 16 | Expired |
| US6603556B2 | Photometric detection system having multiple path length flow cell | Physics | 11 | Expired |
| US8189196B2 | Self referencing LED detection system for spectroscopy applications | Physics | 8 | Active |
| US6926867B1 | Pipette piston seal assembly | Performing Operations; Transporting | 7 | Expired |
| US5454491A | Non-metallic precision fluid transfer devices | Performing Operations; Transporting | 6 | Expired |
| US8915143B2 | Combination ultrasensitive force transducer and grabbing device for force and strain measurement from single cells | Human Necessities | 1 | Active |
| US11686931B2 | Three-dimensional viewing device | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.