Company Filing History:
Years Active: 1993-2000
Title: Innovations of Martha M Rajaratnam
Introduction
Martha M Rajaratnam is a prominent inventor based in Dedham, MA (US). She has made significant contributions to the field of photoresist compositions, holding a total of five patents. Her work has advanced the technology used in photolithography, which is essential for semiconductor manufacturing.
Latest Patents
Martha's latest patents include innovative developments in photoresist compositions and methods. One notable invention is a positive chemically amplified photoresist composition that produces a strong photogenerated acid. This resist is coated onto a metal substrate that has undergone a stringent bake step, specifically heating the substrate to at least 140 degrees Celsius for more than 60 seconds. The combination of a strong photogenerated acid and a stringent pre-coating substrate bake results in highly resolved resist relief images, even on metal substrates. Another significant patent involves photoimageable compositions comprising multiple arylsulfonium compounds. This invention provides both positive- and negative-acting photoresist compositions that include a photoacid generator component with multiple aryl sulfonium compounds. The photoactive component can be conveniently prepared and offers a deep UV sensitive resist with excellent microlithographic properties.
Career Highlights
Martha M Rajaratnam is currently associated with Shipley Company, L.L.C., where she continues to innovate in the field of photoresist technology. Her expertise and contributions have positioned her as a key figure in her industry.
Collaborations
Martha has collaborated with notable coworkers, including Roger F Sinta and James W Thackeray. Their combined efforts have furthered advancements in the technologies they work on.
Conclusion
Martha M Rajaratnam's contributions to the field of photoresist compositions have made a significant impact on the semiconductor industry. Her innovative patents and collaborations highlight her role as a leading inventor in this specialized area.
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.