This inventor holds 3 USPTO granted patents, plus 1 CIPO patent. Top assignee: E.i. Dupont De Nemours and Company. Active years: 1990-1991.
Location History:
- Derwood, MD (US) (1990)
- Richmond, VA (US) (1991)
Company Filing History:
Years Active: 1990-1991
Title: The Innovative Contributions of Penny C. Simpson
Introduction
Penny C. Simpson is a notable inventor based in Derwood, MD (US). She has made significant contributions to the field of materials science, particularly in the development of nonwoven fabrics. With a total of 3 patents, her work has advanced the capabilities of disposable industrial garments and protective clothing.
Latest Patents
One of her latest patents is for a hydroentangled polyolefin web. This process involves hydroentangling continuous polyolefin filament fibers to create a fabric web. The fibers are supported on a 60 to 150 mesh screen and are subjected to high-pressure water jets operating at a minimum of 2000 psi. This method provides a total impact energy of at least 0.7 MJ-N/Kg to entangle the fibers effectively. The resulting hydroentangled web exhibits enhanced visual uniformity, opacity, softness, comfort, strength, and barrier properties compared to previous materials, making it particularly useful for disposable industrial garments.
Another significant patent is for a point-bonded jet-softened polyethylene film-fibril sheet. This innovation involves point-bonding and water-jet-softening of flash-spun polyethylene plexifilamentary film-fibril strands. The resulting nonwoven fabric is well-suited for dyeing and is ideal for use in disposable protective garments. Garments made from this fabric offer comfort and effective protection against airborne particulate matter, including asbestos particles.
Career Highlights
Penny C. Simpson has worked with prominent companies, including E.I. DuPont De Nemours and Company. Her experience in these organizations has contributed to her expertise in the field of materials science and innovation.
Collaborations
Throughout her career, Penny has collaborated with notable individuals such as Chi-Chang Lee and Larry M. Smith. These collaborations have further enriched her work and contributed to her success as an inventor.
Conclusion
Penny C. Simpson's innovative contributions to the field of materials science have led to the development of advanced nonwoven fabrics that enhance the safety and comfort of disposable garments. Her patents reflect her commitment to improving industrial and protective clothing, making her a significant figure in her field.