Location History:
- Oadby, EN (1976)
- Oldham, GB (1987 - 2002)
Company Filing History:
13 out of 3,840 
7 out of 90,594 
1 out of 10,754 
Years Active: 1976-2002
Title: David Greenwood – Innovator in Reactive Dyes
Introduction
David Greenwood, based in Oldham, GB, is a prolific inventor known for his contributions to the field of chemistry, particularly in dye technology. With a remarkable portfolio of 21 patents to his name, Greenwood has made significant strides in the development of reactive dyes that enhance color applications across various industries.
Latest Patents
Among his latest innovations, Greenwood has introduced groundbreaking patents such as "Reactive Dyes Containing a Halobenzene Nucleus," which focuses on reactive dyes that incorporate at least one halobenzene nucleus linked to a chromophoric group. This innovation also contains a second reactive group, broadening the potential applications for these dyes. Another significant patent is for "Anionic Disazo Dyes," which details a compound represented by a chemical formula featuring 3- or 4-carboxyphenyl in its free acid form. These advancements highlight his expertise in creating versatile and effective dye solutions.
Career Highlights
Greenwood's career includes notable tenures at well-known organizations such as Imperial Chemical Industries Limited, where he honed his skills and furthered his research in chemical applications, and Canon Kabushiki Kaisha, contributing to international projects. His roles in these companies have allowed him to develop and refine his innovative ideas into patented technologies.
Collaborations
Throughout his career, Greenwood has collaborated with esteemed colleagues such as Anthony G. Baxter and Stephen B. Bostock. Their joint efforts have facilitated the exploration and advancement of various dye technologies, further enriching the landscape of chemical innovations.
Conclusion
David Greenwood's contributions to the field of dye chemistry, highlighted by his 21 patents, demonstrate his vital role as an inventor. His continued work in reactive dyes reflects his commitment to innovation and excellence in chemical research, making significant impacts in various industrial applications.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.