This inventor holds 6 USPTO granted patents and 1 published patent application. Top assignees: E.i. Dupont De Nemours and Company, Other. Active years: 1984-2023.
Location History:
- Towanda, PA (US) (1984 - 1993)
- El Dorado, CA (US) (2023)
Company Filing History:
5 out of 16,339 
1 out of 834,307 Years Active: 1984-2023
Title: The Innovative Contributions of Robert W. Ashcraft
Introduction
Robert W. Ashcraft is a notable inventor based in Towanda, PA (US), recognized for his significant contributions to the field of thermoplastic heating appliances and photopolymerization processes. With a total of 6 patents to his name, Ashcraft has demonstrated a commitment to innovation and technological advancement.
Latest Patents
One of Ashcraft's latest inventions is a thermoplastic sheet heating appliance. This apparatus is designed for the heating of thermally deformable sheet material and features a frame with a pair of end beams and side rails arranged in a rectangular configuration. The side rail channels are oriented with their longitudinal openings extending upwardly, allowing for efficient heating. The heating tray assembly includes quick-release cam clamps that enable easy installation and removal at any location along the side rails. Additionally, a sheet support assembly is equipped with similar cam clamps to maintain planar support of a workpiece.
Another significant patent involves the lamination of a photopolymerizable solder mask layer to a substrate. This process applies a preformed photopolymerizable solder mask film and a photosensitive liquid to a printed circuit substrate with multiple holes. The innovation aims to reduce failures in photopolymerized areas of the solder mask film above the holes after soldering operations. The photosensitive liquid and the preformed film both contain ethylenically unsaturated compounds and specific photoinitiator systems that enhance the effectiveness of the process.
Career Highlights
Throughout his career, Robert W. Ashcraft has worked with prominent companies, including E.I. DuPont De Nemours and Company. His experience in these organizations has contributed to his expertise and innovative capabilities in the field.
Collaborations
Ashcraft has collaborated with notable individuals such as Jon Gregory Moehlmann and John H. Bayless, Jr. These partnerships have likely fostered a creative environment that has led to the development of his patents.
Conclusion
Robert W. Ashcraft's contributions to innovation, particularly in thermoplastic heating appliances and photopolymerization processes, highlight his role as a significant inventor. His work continues to influence advancements in technology and manufacturing processes.