This inventor holds 2 USPTO granted patents and 1 EPO patent. Top assignee: Hewlett-Packard Development Company, L.p.. Active years: 2009-2011.
Location History:
- San Diego, CA (US) (2009)
- Poway, CA (US) (2011)
Company Filing History:
Years Active: 2009-2011
Title: Bill Sperry: Innovator in Highlighter Ink Compositions
Introduction
Bill Sperry is a notable inventor based in Poway, California. He has made significant contributions to the field of ink compositions, particularly in the development of highlighter markers. With a total of 2 patents to his name, Sperry's work has focused on enhancing the performance and usability of highlighter inks.
Latest Patents
Sperry's latest patents include innovative formulations for highlighter ink compositions. One of his patents details ink compositions that provide improved abilities to reduce smear during highlighting. These highlighter ink compositions incorporate an acid buffer with a pKa ranging from about 2 to about 6, a highlighter colorant, and a liquid vehicle. The application of these compositions to printed images, especially those produced by ink-jet printing, results in a significantly reduced degree of image smear. Additionally, the acid buffer is designed to limit the mobility of specific ink-jet colorants, allowing for tailored solutions to reduce smear across various printed inks.
Another patent focuses on print media and methods of making print media. This invention describes a print medium that includes a substrate with a fibrous component, along with a cationic guanidine polymer compound or its salt and a metallic salt integrated within the fibrous component. These innovations contribute to the overall quality and functionality of print media.
Career Highlights
Bill Sperry is associated with Hewlett-Packard Development Company, L.P., where he has been instrumental in advancing ink technology. His work has not only improved the quality of highlighter inks but has also contributed to the broader field of printing technologies.
Collaborations
Throughout his career, Sperry has collaborated with notable colleagues, including John L. Stoffel, Jr. and Richard J. McManus. These collaborations have fostered a creative environment that has led to significant advancements in ink compositions.
Conclusion
Bill Sperry's contributions to the field of ink technology, particularly in highlighter compositions, demonstrate his innovative spirit and dedication to improving product performance. His patents reflect a commitment to enhancing user experience and reducing issues such as smear in printed materials.