Location History:
- N. Plainfield, NJ (US) (1980)
- North Plainfield, NJ (US) (1977 - 1990)
- Plainfield, NJ (US) (1991)
Company Filing History:
14 out of 824 
3 out of 1,194 Years Active: 1977-1991
Title: The Innovative Contributions of John R. Costanza
Introduction
John R. Costanza is a notable inventor based in North Plainfield, NJ (US), recognized for his significant contributions to the field of polymer chemistry. With a total of 16 patents to his name, he has made remarkable advancements in the preparation and production of polyarylates and aromatic polyesters.
Latest Patents
Among his latest patents is the "Preparation of poly(arylate) using a non-solvent." This innovative process involves forming a polyarylate by reacting a mixture of a diester of a dihydric phenol, at least one aromatic dicarboxylic acid, and an inert diluent comprising a poly(fluorinated alkylene oxide). This method allows for the creation of polyarylates with improved color, and the diluent can be easily separated from the polyarylate and reaction byproducts. Another significant patent is the "Process for producing aromatic polyesters," which describes a method for producing shapable aromatic polyesters derived from bisphenol A and a dicarboxylic acid, such as isophthalic acid or terephthalic acid. This process involves forming a mixed anhydride of the dicarboxylic acid and acetic acid, followed by a reaction with bisphenol A while drawing off acetic acid by-product to obtain the desired aromatic polyester.
Career Highlights
Throughout his career, John R. Costanza has worked with prominent companies in the chemical industry, including Celanese GmbH and Hoechst Celanese Corporation. His work in these organizations has contributed to the development of innovative materials and processes that have had a lasting impact on the industry.
Collaborations
John has collaborated with esteemed colleagues such as George L. Collins and Anthony B. Conciatori, further enhancing the scope and impact of his work in polymer chemistry.
Conclusion
John R. Costanza's contributions to the field of polymer chemistry through his patents and collaborations highlight his innovative spirit and dedication to advancing material science. His work continues to influence the development of new materials and processes in the industry.
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.