This inventor holds 6 USPTO granted patents. Top assignees: Basf Corporation, Basf Wyandotte Corporation, Warner-Lambert Company. Active years: 1984-1990.
Company Filing History:
4 out of 2,057 
1 out of 454 
1 out of 2,538 Years Active: 1984-1990
Title: The Innovative Contributions of Floyd G. Spence
Introduction
Floyd G. Spence is a notable inventor based in Holland, MI (US), recognized for his contributions to the field of colorants and pigments. With a total of 6 patents to his name, Spence has made significant advancements in the development of colorants suitable for various applications, particularly in the ink industry.
Latest Patents
Among his latest patents, Spence developed azo colorants for ballpoint pen and ribbon inks. These reddish-brown to yellow shade colorants are produced from the glassy waste by-product of pararosaniline manufacture. The process involves slurrying the residue in mineral acid, diazotizing, and coupling, resulting in colorants that are useful in preparing inks. Another notable patent is for a pigmentary salt of a triphenylmethane compound and the process for making it. This pigmentary Opal Sulfate is created by combining triphenylpararosaniline (Opal Blue) with a dilute acid. The preferred method for producing this pigment involves drowning a solution of Opal Blue in a highly agitated solution of dilute sulfuric acid, providing a substitute for Alkali Blue.
Career Highlights
Throughout his career, Floyd G. Spence has worked with prominent companies such as BASF Corporation and Warner-Lambert Company. His work in these organizations has contributed to the development of innovative products and processes in the chemical industry.
Collaborations
Spence has collaborated with notable individuals in his field, including Louis R. De Alvare and Robert J. Allen. These collaborations have likely enhanced his research and development efforts, leading to successful innovations.
Conclusion
Floyd G. Spence's contributions to the field of colorants and pigments demonstrate his innovative spirit and dedication to advancing technology. His patents reflect a commitment to improving the quality and functionality of inks and pigments, making a lasting impact in the industry.