Location History:
- Homestead, PA (US) (1978)
- Webster Groves, MO (US) (1992 - 1993)
Company Filing History:
2 out of 24 
1 out of 832,680 Years Active: 1978-1993
Title: The Innovations of John F. Lang
Introduction
John F. Lang is a notable inventor based in Webster Groves, Missouri. He holds three patents that showcase his contributions to the field of chemistry. His work primarily focuses on the synthesis of various chemical compounds, which have significant applications in the industry.
Latest Patents
One of his latest patents involves the synthesis of bromobiphenyls. In this process, bromobiphenyls, such as 2-fluoro-4-bromobiphenyl, are synthesized by reacting phenylboronic acid with bromoiodobenzene. The reaction is facilitated by a catalyst, typically palladium in a zero valence state, and an inert solvent like fluorobenzene. Controlling the temperature is crucial to achieving both an acceptable reaction rate and minimizing the formation of terphenyl byproducts.
Another significant patent by Lang is the synthesis of fluorobenzaldehydes. This process involves forming 4-fluorobenzaldehydes from specific compounds, where R1, R2, R3, and R4 can represent hydrogen, halogen, or alkyl groups. The compound is reacted with a formylating agent in the presence of FeCl3, leading to the separation of a new compound.
Career Highlights
Throughout his career, John F. Lang has worked with Mallinckrodt Specialty Chemicals Company, where he applied his expertise in chemical synthesis. His innovative approaches have contributed to advancements in the chemical industry.
Collaborations
Lang has collaborated with notable coworkers, including Narayanasamy Gurusamy and Calvin E. Kelly. Their combined efforts have furthered research and development in their respective fields.
Conclusion
John F. Lang's contributions to chemical synthesis through his patents highlight his innovative spirit and dedication to advancing the field. His work continues to influence the industry and inspire future inventors.
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.