Location History:
- Boston, MA (US) (1999 - 2005)
- Dorchester, MA (US) (1998 - 2024)
Company Filing History:
8 out of 8 
2 out of 2,297 
2 out of 2,019 
Years Active: 1998-2024
Title: Innovative Contributions of Jonathan C Crowell
Introduction
Jonathan C Crowell is a prolific inventor hailing from Dorchester, MA. With a remarkable portfolio of 15 patents, his work primarily focuses on advancements in underwater technology. Through his inventive efforts, Crowell has made significant strides in the field of acoustic tracking and communication systems for underwater devices.
Latest Patents
One of Crowell's most notable inventions is the Underwater Acoustic Tracking and Two-way Messaging System. This innovative system allows a large number of underwater devices to transmit their precise position relative to a fixed underwater beacon by emitting two short-duration, precisely timed acoustic tones, also known as pings. The arrival times of these pings enable the system to determine the transmitter's exact position in relation to the beacon.
The system can code for either the range and bearing or an X, Y coordinate of each object concerning the beacon. Additionally, it facilitates the sending and receiving of data messages for command, control, and status updates. The pulses can generate single frequencies with a duration of approximately 1 millisecond, and they can operate across multiple frequencies to permit overlapping cycles. This robust coding scheme allows numerous devices to transmit data simultaneously, whether in group tracking scenarios or as individual entities for unambiguous tracking.
The transducers employed in this system can be omni-directional hydrophones. The tracking grid size is determined by the chosen acoustic frequency, with ranges reaching up to 1000 meters for 40 kHz and 6000 meters for 8 kHz. For efficient operation, all nodes in the system must maintain precise synchronized time.
Career Highlights
Jonathan's impressive career includes tenure at several reputable organizations, notably Ocean Server Technology, Inc. and Digital Equipment Corporation. His professional journey has enabled him to apply his inventive prowess in the real world, contributing to significant marine technologies.
Collaborations
Throughout his career, Crowell has collaborated with notable colleagues, including David William Maruska and Joseph Ervin. These partnerships have further enriched his work and expanded the impact of his innovative contributions to underwater technology.
Conclusion
Jonathan C Crowell stands out as an influential figure in the realm of underwater innovations. His acclaimed inventions, particularly the Underwater Acoustic Tracking and Two-way Messaging System, demonstrate his commitment to solving complex challenges in marine environments. With 15 patents to his name, Crowell's contributions continue to pave the way for future advancements in underwater technology.