This inventor holds 2 USPTO granted patents. Top assignees: Ciba Specialty Chemicals Corporation, Rasio Chemcials UK Ltd. Active years: 2002-2009.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2002-2009
Title: John Roberts: Innovator in Paper Sizing Technologies
Introduction
John Roberts is a notable inventor based in Hyde, GB. He has made significant contributions to the field of paper sizing, holding a total of 2 patents. His work focuses on enhancing the properties of paper and board through innovative chemical compositions.
Latest Patents
Roberts' latest patents include a paper sizing composition and a rosin emulsion. The paper sizing composition relates to the sizing of paper and board using alkenyl succinic anhydride (ASA). This invention provides a sizing composition that comprises an aqueous emulsion of ASA, which incorporates a maximum of 1% by weight of polymeric residues. The composition may also include less than 0.5% by weight of olefins. These paper sizing compositions offer enhanced resistance to penetration by agents such as hot hydrogen peroxide and lactic acid. His second patent, the rosin emulsion, is a cationic rosin-in-water emulsion prepared without intermediate isolation of an anionic rosin-in-water emulsion. In this emulsion, the dispersed rosin phase is stabilized by a cationic polymer derived from degraded starch, with a degree of substitution of at least 0.15 quaternary groups per glucose unit.
Career Highlights
Throughout his career, John Roberts has worked with prominent companies such as Ciba Specialty Chemicals Corporation and Rasio Chemicals UK Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in the field of paper chemistry.
Collaborations
Roberts has collaborated with notable professionals in his field, including Kenneth Sundberg and Claes Zetter. These collaborations have contributed to the advancement of his research and the successful development of his patents.
Conclusion
John Roberts is a distinguished inventor whose work in paper sizing technologies has led to significant advancements in the industry. His innovative patents reflect his commitment to improving the quality and performance of paper products.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile