Ellen Ochoa Women Inventors • Part I - Women Inventors and the first women to get a patent • Part 2 - Women Inventors and the self-cleaming house • Part 3 - Women Inventors inventing drugs and working for NASA • Part 4 Women Inventors how many are there? • Take a Quiz on Women Inventors

Other Patent Points To Ponder • A Patent for a President • Fingerprints of Commerce • The Art of Toys • Three Part Harmony • The Art of Photography • The House That Innovation Built • Colors of Innovation • Mothers of Invention

The two scientists donated the royalties from their invention, over $13 million dollars, to the nonprofit Research Corporation for the advancement of academic scientific study. Hazen and Brown were inducted into the National Inventors Hall of Fame in 1994.

Gertrude B. Elion patented the leukemia-fighting drug 6-mercaptopurine in 1954 and has made a number of significant contributions to the medical field. Dr. Elion’s research led to the development of Imuran, a drug that aids the body in accepting transplanted organs, and Zovirax, a drug used to fight herpes. Including 6-mercaptopurine, Elion’s name is attached to some 45 patents. In 1988 she was awarded the Nobel Prize in Medicine with George Hitchings and Sir James Black. In retirement, Dr. Elion, who was inducted into the Hall of Fame in 1991, continues to be an advocate for medical and scientific advancement.

Stephanie Louise Kwolek’s research with high performance chemical compounds for the DuPont Company led to the development of a synthetic material called Kevlar which is five times stronger than the same weight of steel. Kevlar, patented by Kwolek in 1966, does not rust nor corrode and is extremely lightweight. Many police officers owe their lives to Stephanie Kwolek, for Kevlar is the material used in bullet proof vests. Other applications of the compound include underwater cables, brake linings, space vehicles, boats, parachutes, skis, and building materials.

Kwolek was born in New Kensington, Pennsylvania in 1923. Upon graduating in 1946 from the Carnegie Institute of Technology (now Carnegie-Mellon University) with a bachelor’s degree, Kwolek went to work as a chemist at the DuPont Company. She would ultimately obtain 28 patents during her 40-year tenure as a research scientist. In 1995, Kwolek was inducted into the Hall of Fame.

Valerie Thomas received a patent in 1980 for inventing an illusion transmitter. This futuristic invention extends the idea of television, with its images located flatly behind a screen, to having three dimensional projections appear as though they were right in your living room. Perhaps in the not-so-distant future, the illusion transmitter will be as popular as the TV is today.

Thomas worked as a mathematical data analyst for NASA after receiving a degree in physics. She later served as project manager for the development of NASA’s image-processing system on Landsat, the first satellite to send images from outer space. In addition to having worked on several other high-profile NASA projects, Thomas continues to be an outspoken advocate for minority rights.

Barbara Askins, a former teacher and mother, who waited until after her two children entered school to complete her B. S. in chemistry followed by a Master’s degree in the same field, developed a totally new way of processing film. Askins was hired in 1975 by NASA to find a better way to develop astronomical and geological pictures taken by researchers. Until Askins’ discovery, these images, while containing valuable information, were hardly visible. In 1978 Askins patented a method of enhancing the pictures using radioactive materials. The process was so successful that its uses were expanded beyond NASA research to improvements in X-ray technology and in the restoration of old pictures. Barbara Askins was named National Inventor of the Year in 1978.

Ellen Ochoa’s pre-doctoral work at Stanford University in electrical engineering led to the development of an optical system designed to detect imperfections in repeating patterns. This invention, patented in 1987, can be used for quality control in the manufacturing of various intricate parts. Dr. Ochoa later patented an optical system which can be used to robotically manufacture goods or in robotic guiding systems. In all Ellen Ochoa has received three patents, most recently in 1990.

In addition to being an woman inventor, Dr. Ochoa is also a research scientist and astronaut for NASA who has logged hundreds of hours in space. 

Ann Tsukamoto is co-patenter of a process to isolate the human stem cell; the patent for this process was awarded in 1991. Stem cells are located in bone marrow and serve as the foundation for the growth of red and white blood cells. Understanding how stem cells grow or how they might be artificially reproduced is vital to cancer research. Tsukamoto’s work has led to great advancements in comprehending the blood systems of cancer patients and may one day lead to a cure for the disease. She is currently directing further research in the areas of stem cell growth and cellular biology.

Betty M. Rozier and Lisa M. Vallino, a mother and daughter team, invented an intravenous catheter shield to make the use of IVs in hospitals safer and easier. The computer-mouse shaped, polyethylene shield covers the site on a patient where an intravenous needle has been inserted. The "IV House" prevents the needle from being accidentally dislodged and minimizes its exposure to patient tampering. Rozier and Vallino received their patent in 1993.

Patricia Billings received a patent in 1997 for a fire resistant building material called Geobond. Billings’ work as a sculpture artist put her on a journey to find or develop a durable additive to prevent her painstaking plaster works from accidentally falling and shattering. After nearly two decades of basement experiments, the result of her efforts was a solution which when added to a mixture of gypsum and concrete, creates an amazingly fire resistant, indestructible plaster. Not only can Geobond add longevity to artistic works of plastic, but also it is steadily being embraced by the construction industry as an almost universal building material. Geobond is made with non-toxic ingredients which makes it the ideal replacement for asbestos.

Currently Geobond is being sold in more than 20 markets worldwide, and Patricia Billings, great grandmother, artist, and woman inventor remains at the helm of her carefully constructed Kansas City-based empire.

After fighting breast cancer and undergoing a mastectomy in 1970, Ruth Handler, one of the creators of the Barbie Doll, surveyed the market for a suitable prosthetic breast. Disappointed in the options available, she set about designing a replacement breast that was more similar to a natural one. In 1975, Handler received a patent for Nearly Me, a prosthesis made of material close in weight and density to natural breasts.

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