Company Filing History:
3 out of 3 
2 out of 2 
1 out of 1 Years Active: 1990-2000
Title: Innovations by Steven H. Petrofsky
Introduction
Steven H. Petrofsky is an accomplished inventor based in Dayton, OH. He holds a total of 6 patents that showcase his contributions to the field of prosthetics and therapeutic technologies. His work has significantly impacted the way prosthetic devices function and how injuries are treated.
Latest Patents
Among his latest innovations is a computer-controlled hydraulic resistance device for prostheses. This device is designed for apparatus such as a prosthetic knee for above-knee amputees. It features a two-stage pilot-operated solenoid valve that controls the flow of hydraulic fluid to and from a hydraulic actuator. This actuator applies resistance to the prosthetic knee, enhancing its functionality. The device utilizes a micro-controller in a closed-loop system to automatically adjust for variations in the device and hydraulic fluid viscosity. Additionally, it includes magnetically actuated electronic sensors that monitor the positions of the apparatus, allowing for a predetermined resistance profile to be applied.
Another notable patent is the electrical stimulation therapy method and apparatus. This invention provides a therapy current aimed at increasing circulation and promoting rapid healing of injured tissues, tendons, or muscles. The apparatus delivers a therapeutic current with minimal discomfort, utilizing three or four channels of electrical stimulation with a novel waveform and channel interaction.
Career Highlights
Throughout his career, Steven has worked with various companies, including Therapeutic Technologies Inc. and Mauch, Inc. His experience in these organizations has contributed to his expertise in developing innovative solutions for medical applications.
Collaborations
Steven has collaborated with notable individuals in his field, including Christian H. Reinke and William G. Gruesbeck. These partnerships have further enriched his work and expanded the impact of his inventions.
Conclusion
Steven H. Petrofsky's contributions to the fields of prosthetics and therapeutic technologies are significant. His innovative patents reflect his dedication to improving the quality of life for individuals with disabilities and injuries. His work continues to inspire advancements in medical technology.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.