Location History:
- Blawnox, PA (US) (1982 - 1983)
- Indiana Township, Allegheny County, PA (US) (1983 - 1985)
- Indiana Township, Indiana County, PA (US) (1985)
- Cresaptown, MD (US) (1986)
- Allegheny County, PA (US) (1986)
- Cresattown, MD (US) (1988)
- Cumberland, MD (US) (1989 - 1991)
- Cheswick, PA (US) (1995 - 2003)
Company Filing History:
Years Active: 1982-2003
Title: John F. Krumwiede: Innovator of Privacy Glass Technologies
Introduction
John F. Krumwiede, an accomplished inventor based in Cheswick, PA, holds an impressive portfolio of 21 patents. His innovative contributions have significantly advanced the field of glass technology, particularly in the development of privacy glass compositions that absorb infrared and ultraviolet radiation.
Latest Patents
Among his notable inventions are two advanced glass compositions: the blue privacy glass and the bronze privacy glass. The blue privacy glass is characterized by its unique ability to absorb infrared and ultraviolet light while offering a luminous transmittance of up to 60 percent. This glass is composed of a standard soda-lime-silica base along with additives like iron and cobalt, which enhance its color and absorption capabilities. Specifically, it exhibits a dominant wavelength in the range of 480 to 489 nanometers and has an excitation purity of at least 8 percent at a thickness of 0.160 inches (4.06 millimeters).
Similarly, the bronze privacy glass provides a bronze hue and shares the same luminous transmittance properties. Its formulation also includes iron and selenium, with an optional addition of cobalt, to achieve a color characterized by a dominant wavelength between 560 to 590 nanometers. This glass composition holds valuable applications due to its effective light absorption properties, making it suitable for various architectural and automotive applications.
Career Highlights
Throughout his career, John F. Krumwiede has worked with reputable companies, notably PPG Industries, Inc. and PPG Industries Ohio, Inc. These experiences have undoubtedly contributed to his expertise in the field of glass innovation, facilitating the development of cutting-edge technologies that enhance privacy and energy efficiency in glass applications.
Collaborations
John's innovation journey has seen collaborations with notable professionals, including Larry J. Shelestak and Anthony V. Longobardo. Working alongside these talented individuals has likely fostered an environment of creativity and technological advancement, leading to significant achievements in glass technology.
Conclusion
John F. Krumwiede stands out as a remarkable inventor whose contributions to privacy glass technology reflect a deep understanding of material science and engineering. With a total of 21 patents to his name, his work continues to impact industries that rely on advanced glass solutions. As technology evolves, Krumwiede's innovations will undoubtedly play a crucial role in shaping future developments in construction and design.