This inventor holds 2 USPTO granted patents and 1 EPO patent. Top assignee: Ethyl Corporation. Active years: 1998.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1998
Title: Marsha J Lester: Innovator in Clean Gear Oils
Introduction
Marsha J Lester is a prominent inventor based in Richmond, VA (US). She has made significant contributions to the field of lubrication technology, particularly in the development of clean performing gear oils. With a total of 2 patents to her name, her work focuses on enhancing the performance and environmental impact of gear oils used in various applications.
Latest Patents
One of her latest patents is for a clean performing gear oil designed for use in transmission oils and axle lubricants. This innovative gear oil features a Brookfield Viscosity at -12°C ranging from about 1,000 to about 150,000 cP. It comprises a base oil with a kinematic viscosity at 100°C ranging from about 4.0 to about 41.0 cSt. The formulation includes a dispersant pour point depressant and/or a dispersant viscosity index improver, while being essentially devoid of carboxylic-type ashless dispersants, thus providing a cost-effective alternative to conventional gear oils.
Another notable patent is for a clean gear boron-free gear additive. This invention employs a boron-free ashless dispersant, a sulfur source, and a phosphorus source. The preferred dispersant is a hydrocarbyl succinimide, which allows the additive composition to meet MT-1 and MIL-PRF-2105E requirements without the need for boron. This innovation is crucial for producing clean gear manual transmission oils and rear axle oils.
Career Highlights
Marsha J Lester is currently associated with Ethyl Corporation, where she continues to advance her research in lubrication technology. Her work has not only contributed to the company's portfolio but has also set new standards in the industry.
Collaborations
Throughout her career, Marsha has collaborated with notable colleagues, including Lee D Saathoff and Ian MacPherson. These partnerships have fostered innovation and have been instrumental in the development of her patented technologies.
Conclusion
Marsha J Lester's contributions to the field of clean gear oils exemplify her commitment to innovation and sustainability. Her patents reflect a deep understanding of lubrication technology and its applications, making her a significant figure in the industry.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile