CiDRA Corporation
128Patents
12Active
128Granted
47Portfolio score
Filing activity: Dec 31, 1996 → Jan 22, 2007 · 12 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6354147B1 | Fluid parameter measurement in pipes using acoustic pressures | Physics | 191 | Expired |
| US5892860A | Multi-parameter fiber optic sensor for use in harsh environments | Physics | 184 | Expired |
| US6016702A | High sensitivity fiber optic pressure sensor for use in harsh environments | Physics | 148 | Expired |
| US6233374A | Mandrel-wound fiber optic pressure sensor | Physics | 114 | Expired |
| US6450037B1 | Non-intrusive fiber optic pressure sensor for measuring unsteady pressures within a pipe | Physics | 110 | Expired |
| US6009216A | Coiled tubing sensor system for delivery of distributed multiplexed sensors | Fixed Constructions | 90 | Expired |
| US6229827A | Compression-tuned bragg grating and laser | Physics | 86 | Expired |
| US6072567A | Vertical seismic profiling system having vertical seismic profiling optical signal processing equipment and fiber Bragg grafting optical sensors | Physics | 83 | Expired |
| US6732575B2 | Fluid parameter measurement for industrial sensing applications using acoustic pressures | Physics | 82 | Expired |
| US6889562B2 | Flow rate measurement for industrial sensing applications using unsteady pressures | Physics | 80 | Expired |
| US6470036B1 | Tunable external cavity semiconductor laser incorporating a tunable bragg grating | Electricity | 74 | Expired |
| US5925879A | Oil and gas well packer having fiber optic Bragg Grating sensors for downhole insitu inflation monitoring | Fixed Constructions | 74 | Expired |
| US7032432B2 | Apparatus and method for measuring parameters of a mixture having liquid droplets suspended in a vapor flowing in a pipe | Physics | 73 | Expired |
| US6279660A | Apparatus for optimizing production of multi-phase fluid | Fixed Constructions | 73 | Expired |
| US6271766A | Distributed selectable latent fiber optic sensors | Fixed Constructions | 73 | Expired |
| US7134320B2 | Apparatus and method for providing a density measurement augmented for entrained gas | Physics | 70 | Expired |
| US6191414A | Composite form as a component for a pressure transducer | Physics | 69 | Expired |
| US6489606B1 | Bragg grating sensor system with spectral response or code division multiplexing | Physics | 66 | Expired |
| US5986749A | Fiber optic sensing system | Physics | 65 | Expired |
| US5987197A | Array topologies for implementing serial fiber Bragg grating interferometer arrays | Physics | 63 | Expired |
| US7261002B1 | Flow rate measurement for industrial sensing applications using unsteady pressures | Physics | 62 | Expired |
| US5877426A | Bourdon tube pressure gauge with integral optical strain sensors for measuring tension or compressive strain | Physics | 60 | Expired |
| US7096719B2 | Apparatus for measuring parameters of a flowing multiphase mixture | Physics | 59 | Expired |
| US7152460B2 | Apparatus and method for compensating a coriolis meter | Physics | 55 | Expired |
| US6959604B2 | Apparatus and method having an optical fiber disposed circumferentially around the pipe for measuring unsteady pressure within a pipe | Physics | 53 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.