This inventor holds 6 USPTO granted patents. Top assignees: Johns Manville, Manville Service Corporation, Manville Corporation. Active years: 1980-1987.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Jefferson County, CO (US) (1980 - 1983)
- Littleton, CO (US) (1980 - 1987)
Company Filing History:
3 out of 1,027 
2 out of 112 
1 out of 151 Years Active: 1980-1987
Title: Richard N Cunningham: Innovator in Lightweight Building Materials
Introduction
Richard N Cunningham is a notable inventor based in Littleton, CO (US). He has made significant contributions to the field of building materials, particularly with his innovative approaches to lightweight asphalt products. With a total of 6 patents, Cunningham's work reflects a commitment to enhancing material efficiency and performance.
Latest Patents
Cunningham's latest patents include a groundbreaking lightweight asphalt-based building material and a process for making it. This innovative roofing product features an asphalt-based coating with a specific gravity of less than 1.0. The formulation incorporates a lightweight filler, which has an effective specific gravity ranging from 0.10 to 0.50, and is present in the coating at 3% to 25% by weight. In a preferred embodiment, the filler particles contain hollow, gas-filled inclusions, utilizing expanded perlite or expanded permicite particles.
Another significant patent involves an apparatus for the rapid annealing of refractory fiber bodies. This process allows air heated to temperatures between 750°F (400°C) and 1400°F (760°C) to pass through a refractory fiber body for 5 to 200 seconds. The apparatus comprises an annealing unit with opposed foraminous platens, ensuring dimensional integrity while operating more economically and thermally efficiently than traditional tunnel oven processes.
Career Highlights
Throughout his career, Richard N Cunningham has worked with prominent companies such as Johns Manville and Manville Service Corporation. His experience in these organizations has contributed to his expertise in developing innovative building materials.
Collaborations
Cunningham has collaborated with notable individuals in his field, including Douglas D Smith and Romain E Loeffler, who is now deceased. These collaborations have likely enriched his work and expanded the impact of his inventions.
Conclusion
Richard N Cunningham stands out as an influential inventor in the realm of lightweight building materials. His innovative patents and career achievements reflect a dedication to advancing material technology and efficiency.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile