logo

For the Inventor, By the Inventor

Lake Jackson, TX, United States of America

Dorothy L Roerden

This inventor holds 6 USPTO granted patents. Top assignee: The Dow Chemical Company. Active years: 1993-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Dorothy L Roerden. Retrieved from https://idiyas.com/inventor/dorothy-l-roerden

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 6

% Patents Active = 100.0

Average Co-Inventor Count = 2.1

ph-index = 4

Forward Citations = 29(Granted Patents)


Company Filing History:

goldMedal6 out of 7,680 
 
The Dow Chemical Company
 patents

Years Active: 1993-2001

Loading Chart...
6 patents (USPTO):Explore Patents
1. 6177577 - Dicationic and polycationic monoprimary alcohols and derivatives thereof (2001-01-23),
2. 6123738 - Process for the production of low color 2,3-epoxypropyltrialkylammonium (2000-09-26),
3. 5616800 - Dicationic and polycationic monoprimary alcohols and derivatives thereof (1997-04-01),
4. 5320646 - Process for improving the dyeability of fabrics and fibers (1994-06-14),
5. 5241061 - Process for the dry cationization of starch (1993-08-31),
6. 5198117 - Method and apparatus for preparing an epoxide by anionic dialysis (1993-03-30),

Title: Dorothy L Roerden: Innovator in Chemical Engineering

Introduction

Dorothy L Roerden is a notable inventor based in Lake Jackson, TX (US). She has made significant contributions to the field of chemical engineering, particularly in the development of novel chemical compounds. With a total of 6 patents to her name, her work has had a substantial impact on various applications in the industry.

Latest Patents

Among her latest patents, Roerden has developed dicationic and polycationic monoprimary alcohols and their derivatives. This invention relates to novel compounds represented by a specific formula. Another significant patent is for the process of producing low color 2,3-epoxypropyltrimethylammonium chloride. This method involves treating 2,3-epoxypropyltrimethylammonium chloride with sodium hypochlorite to reduce its color. The compound can be prepared through the reaction of trimethylamine and epichlorohydrin, and an aprotic solvent may be used if desired. The final product is essential for color-sensitive applications, such as producing cationic starch for use in paper manufacturing.

Career Highlights

Roerden's career has been marked by her innovative contributions to The Dow Chemical Company. Her expertise in chemical processes and product development has positioned her as a key figure in her field.

Collaborations

Throughout her career, Roerden has collaborated with notable colleagues, including R Keith Frank and Robert T Patton. These collaborations have further enhanced her research and development efforts.

Conclusion

Dorothy L Roerden's work exemplifies the spirit of innovation in chemical engineering. Her patents and contributions continue to influence the industry, showcasing her dedication to advancing technology and improving processes.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Loading…