Location History:
- Oosaka, JP (1988)
- Osaka, JP (1991 - 1994)
- Moriguchi, JP (1979 - 1995)
Company Filing History:
7 out of 6,893 
1 out of 5 Years Active: 1979-1995
Title: Kazuaki Sakakura: Innovator in Phase Retarder Film Technology
Introduction
Kazuaki Sakakura is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of optical materials, particularly in the development of phase retarder films. With a total of seven patents to his name, Sakakura's work has advanced the technology used in liquid crystal displays and other optical applications.
Latest Patents
Sakakura's latest patents include a process for producing phase retarder film. This innovative process involves laminating a heat-shrinkable film on at least one side of a uniaxially stretched thermoplastic resin film. The heat shrinkage axis direction of the heat-shrinkable film is made perpendicular to the stretching axis direction of the thermoplastic resin film. The resulting laminate undergoes heat shrinkage, followed by peeling and removal of the heat-shrinkable film. The objective of this invention is to provide a phase retarder film with a desired R.sub.40 /R.sub.0 value and a desired retardation value, achieved easily and efficiently. Another notable patent is for a phase retarder and the process for its production. This phase retarder is created by shrinking a uniaxially stretched thermoplastic high polymer film in a direction perpendicular to the stretching direction, achieving a lengthwise shrink of at least 2%. The phase retarder exhibits broad viewing angle characteristics while maintaining a satisfactory black-and-white display level.
Career Highlights
Throughout his career, Kazuaki Sakakura has worked with notable companies such as Sumitomo Chemical Company, Limited and Placo Co., Ltd. His experience in these organizations has contributed to his expertise in the field of optical materials and film technology.
Collaborations
Sakakura has collaborated with esteemed colleagues, including Toyokazu Okada and Nobuo Fukushima. These partnerships have fostered innovation and development in the technologies related to phase retarder films.
Conclusion
Kazuaki Sakakura's contributions to the field of phase retarder film technology have been significant. His innovative patents and collaborations have advanced the capabilities of optical materials, particularly in enhancing the performance of liquid crystal displays. His work continues to influence the industry and inspire future innovations.
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.