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For the Inventor, By the Inventor

Seal Beach, CA, United States of America

Yoseph Bar-Cohen

This inventor holds 43 USPTO granted patents, primarily in Ultrasonic Technology. Top assignees: California Institute of Technology, Systems Research Laboratories, United States of America as Represented by the Administrator of NASA. Active years: 1984-2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoseph Bar-Cohen. Retrieved from https://idiyas.com/inventor/yoseph-bar-cohen

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 43

% Patents Active = 72.1

Average Co-Inventor Count = 3.1

ph-index = 13

Forward Citations = 1,290(Granted Patents)


Location History:

  • Dayton, OH (US) (1984 - 1986)
  • Seal Beach, CA (US) (1987 - 2020)
  • Pasadena, CA (US) (2019 - 2023)

Company Filing History:

goldMedal27 out of 4,632 
 
California Institute of Technology
 patents
silverMedal4 out of 25 
 
Systems Research Laboratories
 patents
bronzeMedal3 out of 2,490 
 
United States of America as Represented by the Administrator of NASA
 patents
4. 2 out of 5,097 
 
United States of America as Represented by the Secretary of the Air Force
 patents
5. 1 out of 1,173 
 
Mcdonnell Douglas Corporation
 patents
6. 1 out of 1 
 
Placidus LLC
 patent
7. 7 out of 834,601 
Other
 patents
where one patent can have more than one assignee

Years Active: 1984-2023

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Areas of Expertise:
Ultrasonic Actuator
Piezo Actuator
High Temperature Probe
Acoustic Modem
Rotary Drill
Impact Restraint
Fluid Measurement
Medical Catheter
Flow Control Valve
Cavitation Detection
Composite Laminates
Acoustic Transducer
43 patents (USPTO):Explore Patents
1. 11712717 - Dual frequency ultrasonic and sonic actuator with constrained impact mass (2023-08-01),
2. 11557711 - Multi-stack piezo actuator (2023-01-17),
3. 10681951 - Helmet impact self-controlled restrainer (HISCOR) for protecting football players head from trauma and concussion injury (2020-06-16),
4. 10605784 - High temperature ultrasonic probe and pulse-echo probe mounting fixture for testing and blind alignment on steam pipes (2020-03-31),
5. 10578480 - Multi-probe system for measuring height of fluid in pipes with steady-state and turbulent flow conditions (2020-03-03),
6. 10508513 - High pressure high flow digital valve with locking poppets and backflow prevention (2019-12-17),
7. 10349972 - Placid wire mechanism of penetrating blockings and occlusions in arteries (2019-07-16),
8. 9945207 - Multi-path multi-stage erosion-resistant valve for downhole flow control (2018-04-17),
9. 9748870 - Acoustic mechanical feed-throughs for producing work across a structure (2017-08-29),
10. 9605771 - Flow cage assemblies (2017-03-28),
11. 9586234 - High temperature ultrasonic probe and pulse-echo probe mounting fixture for testing and blind alignment on steam pipes (2017-03-07),
12. 9418647 - Communication in pipes using acoustic modems that provide minimal obstruction to fluid flow (2016-08-16),
13. 9404891 - Apparatus for and method of monitoring condensed water in steam pipes at high temperature (2016-08-02),
14. 9352358 - Monolithic flexure pre-stressed ultrasonic horns (2016-05-31),
15. 9316329 - Hydraulic high pressure valve controller using the in-situ pressure difference (2016-04-19),

Title: Innovations and Patents of Yoseph Bar-Cohen

Introduction

Yoseph Bar-Cohen is a renowned inventor based in Seal Beach, California, who has made significant contributions to the field of ultrasonic technology. With a remarkable portfolio of 43 patents, he is known for his innovative designs that enhance the functionality of various ultrasonic actuators.

Latest Patents

Among his latest inventions, Bar-Cohen has developed the "Dual frequency ultrasonic and sonic actuator with constrained impact mass." This actuator uniquely constrains the displacement of the impact mass using several methods, including a cavity that applies ultrasonic stress, a spring attached to the horn's tip, and a flexure. This innovative design converts ultrasonic stress into lower frequency sonic stress, which can then be transmitted through various surfaces using specialized transmitting elements such as a longitudinal probe, drill bit, or thumper.

Another notable patent is the "Multi-stack piezo actuator," where Bar-Cohen presents an ultrasonic actuator featuring an increased radiating surface. This is achieved through multiple piezoelectric stacks compressed by bolts against a common backing structure. The design includes tuning grooves and/or slots to ensure amplitude uniformity, while the symmetrical shape of the radiating surface contributes to its efficiency.

Career Highlights

Throughout his career, Bar-Cohen has worked with prestigious institutions such as the California Institute of Technology, where his research has greatly influenced the advancement of ultrasonic technologies. His work demonstrates a commitment to pioneering solutions that enhance the performance and applicability of ultrasonic devices.

Collaborations

Yoseph Bar-Cohen has collaborated with notable colleagues, including Stewart Sherrit and Xiaoqi Bao. These partnerships have fostered a dynamic exchange of ideas that have led to groundbreaking advancements in the field of ultrasonic innovation.

Conclusion

Yoseph Bar-Cohen's contributions to the realm of ultrasonic technology exemplify his inventive spirit and dedication to innovation. With numerous patents and a history of significant collaborations, he continues to influence the development of advanced ultrasonic applications that hold promise for various industries.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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