This inventor holds 2 USPTO granted patents. Top assignees: Newpage Corporation, Valmet Corporation. Active years: 1998-2009.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Jarvenpaa, FI (1998)
- Järvenpää, FI (2009)
Company Filing History:
Years Active: 1998-2009
Title: Stig Renvall: Innovator in Coated Paper Production
Introduction
Stig Renvall is a notable inventor based in Jarvenpaa, Finland. He has made significant contributions to the field of paper production, particularly in the development of methods that enhance the quality of coated paper. With a total of 2 patents to his name, Renvall's work has had a lasting impact on the industry.
Latest Patents
Renvall's latest patents include a method of producing coated paper with reduced gloss mottle. This innovative method involves calendering a base stock at a relatively high pressure in a first calendering step, followed by coating at least one side of the calendered base stock. The process concludes with calendering the coated base stock at a relatively low pressure in a second calendering step, resulting in excellent smoothness and reduced gloss mottle. Another significant patent is for an assembly for the unwinder end of an off-machine paper web handling line. This invention addresses the challenges encountered when changing rolls in an off-machine coating line, particularly in matching the tension of the web. By utilizing a support felt that equalizes differences in web tension, Renvall's design minimizes web breaks during roll changes.
Career Highlights
Throughout his career, Stig Renvall has worked with prominent companies in the paper industry, including Newpage Corporation and Valmet Corporation. His experience in these organizations has allowed him to refine his skills and contribute to advancements in paper production technology.
Collaborations
Renvall has collaborated with several professionals in his field, including Susanne Sowers and Stephen Craig Petro. These partnerships have fostered innovation and the sharing of ideas, further enhancing the quality of his work.
Conclusion
Stig Renvall's contributions to the paper production industry through his innovative patents and collaborations highlight his role as a key inventor. His work continues to influence the methods used in producing high-quality coated paper.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile