This inventor holds 1 USPTO granted patent. Top assignee: Dennison Manufacturing Company. Active years: 1992.
Company Filing History:
Years Active: 1992
Title: Richard Grandoff - Innovator in Marker Pen Technology.
Introduction
Richard Grandoff is a notable inventor based in Sandown, MA (US). He is recognized for his innovative contributions to the field of writing instruments, particularly in the development of retractable marker pens. His work has significantly impacted the functionality and usability of these everyday tools.
Latest Patents
Grandoff holds a patent for a retractable marker pen and the inks used therein. This invention focuses on an ink formulation that serves as a fluorescent ink, ideal for highlighting text or print. The formulation is designed to reduce the rate of ink evaporation, which is a common issue with conventional marker tips. This property makes it especially suitable for retractable marker pens that lack a separate cap or lint guard. The ink exhibits excellent flow characteristics across various tip widths and does not leak or penetrate paper, ensuring that text on the opposite side remains clear. The ink is composed of a fluorescent dye, selected from methine, xanthene, and anthraquinone dyes, dissolved in a multicomponent solvent system.
Career Highlights
Grandoff is associated with Dennison Manufacturing Company, where he has contributed to the advancement of marker pen technology. His innovative approach has led to the creation of products that enhance user experience and functionality.
Collaborations
Throughout his career, Grandoff has worked alongside talented individuals such as Ann P. Burwell and Lewis H. Johnson. Their collaborative efforts have fostered an environment of creativity and innovation within the company.
Conclusion
Richard Grandoff's contributions to the field of marker pen technology exemplify the importance of innovation in everyday products. His patented ink formulation and retractable marker pen design have set new standards in the industry.