Location History:
- Canton, CT (US) (1995 - 2002)
- Simsbury, CT (US) (1998 - 2018)
Company Filing History:
7 out of 38 
2 out of 83 
1 out of 1 
Years Active: 1995-2018
Title: The Innovative Contributions of Joseph L. Lehman
Introduction
Joseph L. Lehman is a notable inventor based in Canton, Connecticut, with a remarkable portfolio of 12 patents. His work primarily focuses on advancements in cooking appliances and postage scale systems, showcasing his commitment to innovation and technology.
Latest Patents
One of Lehman's latest patents is for an induction cooking appliance. This system includes an AC to DC voltage converter that receives AC voltage from a power input, a voltage sensing unit with an optocoupler, and a processor that controls the input voltage, current, and oscillation frequency of the heating coil. The method for operating this induction stove involves converting AC voltage to DC, supplying it to the sensing unit, and controlling the heating coil based on voltage measurements. Another significant patent is for an electronic postage scale system. This improved system features soft-selection keys for choosing shipping service options, an adjustable display for comfortable viewing, and the capability to interface with various devices. It also includes a security measure requiring users to enter a valid authorization number after updating data or code, which helps prevent unauthorized software copying.
Career Highlights
Throughout his career, Joseph L. Lehman has worked with several prominent companies, including Ascom Hasler Mailing Systems, Inc. and Emhart Glass Machinery Investments Inc. His experience in these organizations has contributed to his expertise in developing innovative solutions.
Collaborations
Lehman has collaborated with notable coworkers such as Robert G. Schwartz and Allen A. Crowe, further enhancing his contributions to the field of invention.
Conclusion
Joseph L. Lehman's innovative work in the fields of cooking appliances and postage systems exemplifies his dedication to advancing technology. His patents reflect a deep understanding of engineering and user needs, making significant contributions to modern inventions.
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.