Hydroacoustics Inc.
58Patents
7Active
58Granted
53Portfolio score
Filing activity: May 6, 1974 → Jan 16, 2024 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6606958B1 | Towed acoustic source array system for marine applications | Physics | 82 | Expired |
| US4294513A | Optical sensor system | Emerging Cross-Sectional Technologies | 68 | Expired |
| US4147228A | Methods and apparatus for the generation and transmission of seismic signals | Physics | 48 | Expired |
| US5841733A | Acoustic source array system for underwater operation | Physics | 43 | Expired |
| US4628493A | Sensor system with time division multiplexing telemetry | Physics | 42 | Expired |
| US3946831A | Acoustic transmitter | Emerging Cross-Sectional Technologies | 39 | Expired |
| US4601927A | Welding of plastic parts | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4381137A | Optical fiber mode separation systems | Physics | 26 | Expired |
| US4799201A | Methods and apparatus for reducing correlation sidelobe interference in seismic profiling systems | Physics | 26 | Expired |
| US4509170A | Time division multiplex transmission of submultiplex sequences of signals from sections of a chain of data acquisition units | Electricity | 26 | Expired |
| US3978940A | Acoustic source | Physics | 26 | Expired |
| US4143585A | Impact tool | Performing Operations; Transporting | 25 | Expired |
| US5995452A | System for generating and transmitting acoustic signals underwater | Physics | 22 | Expired |
| US4722417A | Seismic wave generation by a downhole source | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5160393A | Friction welder having an electromagnetic drive which produces orbital motion | Performing Operations; Transporting | 20 | Expired |
| US4131178A | Seismic source for use under water | Physics | 20 | Expired |
| US4188610A | Method of and apparatus for the generation and transmission of signals for echolocation and other signalling purposes, such as in geophysical exploration | Physics | 19 | Expired |
| US4086122A | Hydroacoustic welder | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4187917A | Pile driver | Fixed Constructions | 17 | Expired |
| US5378951A | Friction welder which produces orbital motion and drive therefor | Performing Operations; Transporting | 16 | Expired |
| US8113278B2 | System and method for enhanced oil recovery using an in-situ seismic energy generator | Fixed Constructions | 15 | Active |
| US5277744A | Friction welder having a drive which produces orbital motion | Performing Operations; Transporting | 14 | Expired |
| US4204278A | Methods and apparatus for the generation and transmission of signals for echo location and other signalling purposes, as in geophysical exploration | Physics | 14 | Expired |
| US4569412A | Seismic source | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4313192A | Optical transducer array system | Physics | 13 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.