John H Larsen

Title: The Innovative Contributions of John H. Larsen

Introduction

John H. Larsen, an accomplished inventor based in Woodridge, Illinois, has made significant strides in the field of printing technology. With a total of two patents to his name, Larsen's work focuses on developing advanced ink compositions and processes that enhance printing efficiency and reduce environmental impact.

Latest Patents

Larsen's latest inventions include groundbreaking advancements in the formulation of printing inks. One of his notable patents is for "Shear Resistant Printing Ink Vehicles." This specification describes a method for creating gelled ink resins that display improved characteristics such as lower viscosity under low shear conditions and a reduced decrease in viscosity when subjected to high shear. The preferred embodiment of this invention involves mixing a rosin-based or hydrocarbon-based resin with an organic solvent and reacting it with a polyamine reactant, such as a melamine-formaldehyde resin or hexamethylene diamine. The outcome is a gelled resin that maintains its viscosity even under high shear conditions, enabling direct use in ink compositions without the need for further gelation or conventional gelling agents.

Another of Larsen's vital contributions is the patent for an "Emulsion Composition and Vehicle and Ink Compositions and Printing Process and Method Thereof." This invention outlines an emulsion composition comprised of water, a hydrocarbon distillate with a boiling point between 215°C and 325°C, and a surfactant featuring a hydrophilic lipophilic balance number of ten or less. The innovative vehicle and ink compositions derived from this emulsion can significantly reduce volatile organic compound emissions and expedite the startup time for achieving print quality in lithographic printing processes.

Career Highlights

Throughout his career, John H. Larsen has been associated with reputable companies, including Lubrizol Advanced Materials, Inc. and The Lubrizol Corporation. His contributions have enhanced the printing industry, paving the way for advancements in ink technology that are both effective and environmentally friendly.

Collaborations

In his journey of innovation, Larsen has worked alongside esteemed colleagues such as Joshua M. Rosenheck and Robert Edwin Quinn. Their collaborative efforts have significantly influenced the development of new ideas and solutions in the field of printing technology.

Conclusion

John H. Larsen stands out as a key figure in the landscape of printing innovations. His patents reflect a commitment to improving ink formulations and printing processes, showcasing his dedication to advancing technology in a way that meets both industry needs and environmental standards. With his inventive spirit and collaborative teamwork, Larsen continues to make a lasting impact in the world of printing.