Location History:
- Ft. Wayne, IN (US) (1978)
- Fort Wayne, IN (US) (1976 - 1984)
- Huntertown, IN (US) (1986 - 1992)
Company Filing History:
5 out of 12 
3 out of 4 
1 out of 1 Years Active: 1976-1992
Title: The Innovative Journey of Leonard L Johnson
Introduction
Leonard L Johnson, an accomplished inventor based in Fort Wayne, IN, holds an impressive portfolio of 10 patents. His innovations primarily focus on printing technologies, which have helped streamline and enhance various marking processes.
Latest Patents
Among his most notable inventions is the "Self-inking hand stamp." This unique assembly incorporates a porous ink cartridge and a die head, allowing ink to be transferred efficiently as it is depleted. The design includes a spring-loaded shielding sleeve that protects the die head until it is pressed against a surface, ensuring both usability and longevity.
Another significant patent is titled "Printing apparatus for marking indicia on articles being successively." This invention features a marking apparatus designed to print on products, such as cartons, as they move along a conveyor. The technology involves a specialized printing roll that engages with the products, facilitated by a complex mechanism to ensure optimal ink transfer from a supply roll, enhancing the efficiency of the marking process.
Career Highlights
Leonard has made significant contributions during his career, notably working with Teco, Inc. and Lincoln Logotype Co., Inc. Through his innovative work, he has helped these organizations pioneer advancements in printing technologies, solidifying their roles as leaders in the industry.
Collaborations
Throughout his career, Leonard has collaborated with notable colleagues such as Millard B Beaver and Thomas J Beaver. These partnerships have fostered creativity and innovation, resulting in impactful inventions that have made a lasting impression in the field of printing.
Conclusion
Leonard L Johnson's journey as an inventor illustrates the importance of innovation in improving technology and processes. His contributions to the printing industry, embodied in his patents, continue to influence the way products are marked and identified, showcasing the power of creativity and engineering. Through collaboration and determination, Johnson remains a significant figure in the realm of inventors, leaving a legacy that inspires future generations.