Company Filing History:
16 out of 3,268 
3 out of 1,780 
1 out of 1,415 
Years Active: 2000-2019
Title: **Innovations by Charles James Ruff: Pioneering the Future of Polymer Science**
Introduction
Charles James Ruff, an accomplished inventor based in Houston, Texas, has made significant contributions to the field of polymer science. With a remarkable portfolio of 20 patents, Ruff's innovations are well-regarded in the industry, particularly in the development of ethylene-propylene copolymers and propylene polymers.
Latest Patents
Ruff's latest work focuses on advanced polymer compositions. One of his notable patents involves ethylene-propylene copolymeric compositions with long methylene sequence lengths. This invention introduces methods to prepare branched ethylene-propylene copolymers that consist of at least 50% ethylene content by weight, showcasing a g' of less than 0.95 and a molecular weight ranging from 125,000 to 300,000. The methylene sequence length in this composition is 6 or greater, with over 32% of the sequences meeting this criterion, and the potential for more than 50% vinyl chain end functionality.
Another significant patent pertains to propylene polymers that feature a melt flow rate (MFR, ASTM 1238, 230° C., 2.16 kg) between 10 dg/min and 25 dg/min. These polymers are characterized by a Dimensionless Stress Ratio/Loss Tangent Index at 190° C. ranging from 1.5 to 28 and an average meso run length of at least 70 or higher. The inventive polymer compositions have practical applications in molded articles and non-woven fibers and fabrics.
Career Highlights
Throughout his career, Charles James Ruff has worked with esteemed organizations including ExxonMobil Chemical Patents Inc. and ExxonMobil Research and Engineering Company. His expertise in polymer science has led to innovations that are critical for various industrial applications.
Collaborations
Ruff has collaborated with well-known professionals in his field, including John Robert Hagadorn and Patrick Brant. These collaborations have enhanced his research and contributed to the success of his patent portfolio.
Conclusion
Charles James Ruff stands as a leading figure in the advancement of polymer technologies. His inventions in ethylene-propylene and propylene polymers demonstrate a clear commitment to innovation and practicality in industrial applications. As his work continues to influence the field, the impact of Ruff's contributions will undoubtedly be felt for years to come.
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.