Location History:
- Arnold, PA (US) (1978 - 1981)
- Londonderry, NH (US) (1990)
- Cranberry Township, PA (US) (1997 - 1998)
- Cranberry Township, Butler County, PA (US) (2006)
- West Mars, PA (US) (2011)
- Warrensville Heights, OH (US) (2014)
Company Filing History:
3 out of 2,825 
2 out of 1,743 
1 out of 2,036 
Years Active: 1978-2014
Title: The Innovative Contributions of William H. McDonald
Introduction
William H. McDonald is a notable inventor based in Cranberry Township, PA (US). He has made significant contributions to the field of technology, holding a total of 8 patents. His work reflects a commitment to innovation and problem-solving in various applications.
Latest Patents
One of McDonald's latest inventions is a handheld voice-activated spelling device. This device features a housing and a cover secured to the housing, with a power source and microphone mounted within. Control switches are operable from the front surface of the housing. The device includes a first memory that stores a plurality of words and a second memory that contains word definitions associated with each word. A speech recognition apparatus is coupled to the microphone and the first memory, allowing it to select a word based on the user's spoken input. Additionally, a display shows the words and their definitions when a selected control switch is activated. Another recent patent involves sulfur-containing oligomers and high index polyurethanes prepared from them. This invention provides a polythiol oligomer formed by the reaction of different dienes and dithiols, showcasing McDonald's versatility in addressing complex chemical processes.
Career Highlights
Throughout his career, McDonald has worked with prominent companies such as PPG Industries, Inc. and PPG Industries Ohio, Inc. His experience in these organizations has contributed to his development as an inventor and innovator.
Collaborations
McDonald has collaborated with talented individuals, including Michael O. Okoroafor and Alan E. Wang. These partnerships have likely enriched his work and expanded the scope of his inventions.
Conclusion
William H. McDonald is a distinguished inventor whose contributions to technology and innovation are noteworthy. His patents reflect a blend of creativity and technical expertise, making him a valuable figure in the field of invention.