Gregory W Farell

Title: Gregory W. Farell: Innovator in Birefringent Film Technology

Introduction

Gregory W. Farell is a notable inventor based in Greenville, SC (US). He has made significant contributions to the field of materials science, particularly in the production of specialized films. His innovative work has led to the development of a unique polyester film that exhibits remarkable optical properties.

Latest Patents

Farell holds a patent for the "Production of highly birefringent film." This invention describes a thin, biaxially oriented polyester film that is asymmetrically oriented by stretching 1-2 times in the machine direction and about 3-5 times in the transverse direction. The film boasts a birefringence of at least 0.085, an optical retardation of at least 9000 nanometers, and a shrinkage of less than 2% in any direction at 150 degrees Celsius. Notably, the film produced is substantially free of color fringes when viewed in partially polarized light. Additionally, two processes for the production of this film are disclosed in the patent.

Career Highlights

Gregory W. Farell is associated with Hoechst Celanese Corporation, where he has been instrumental in advancing film technology. His work has not only contributed to the company's portfolio but has also set new standards in the industry for optical films.

Collaborations

Farell has collaborated with esteemed colleagues such as Stephen J. Gust and Marshall Dean Ledbetter. Their combined expertise has fostered innovation and development in the field of birefringent materials.

Conclusion

Gregory W. Farell's contributions to the production of birefringent films highlight his role as a key innovator in materials science. His patented technology continues to influence the industry and showcases the importance of innovation in developing advanced materials.