Location History:
- Lower Heidelberg Township, PA (US) (2001)
- Sinking Spring, PA (US) (2001 - 2003)
Company Filing History:
Years Active: 2001-2003
Title: William R. Heffner: Innovator in Semiconductor Technology
Introduction
William R. Heffner is a notable inventor based in Sinking Spring, PA (US). He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work focuses on improving the efficiency and effectiveness of laser circuits and devices.
Latest Patents
One of Heffner's latest patents is titled "Method of forming a laser circuit having low penetration ohmic contact providing impurity gettering and the resultant laser circuit." This invention presents a novel contact structure and method for multilayer gettering contact metallization. It utilizes a thin layer of pure metal as the initial layer formed on a semiconductor cap layer. The thin metal layer reacts with the cap layer, trapping mobile impurities and self-interstitials, thus preventing further migration into active areas of the semiconductor device. This method allows for the use of extremely thin semiconductor cap layers, such as InGaAs, with pure metal layers, enabling a higher level of integration for semiconductor optoelectronic devices.
Another significant patent is "In-wafer testing of DFB semiconductor lasers." This method facilitates the manufacturing and testing of a laser device by forming it on a wafer alongside a light detecting device. The laser device includes a grating, and the method allows for in-wafer testing by causing the laser device to lase while detecting light generated from it. This innovative approach helps in obtaining electro-optic parameters of the laser device from the detected light.
Career Highlights
Throughout his career, William R. Heffner has worked with prominent companies such as Lucent Technologies Inc. and Triquint Technology Holding Co. His experience in these organizations has contributed to his expertise in semiconductor technology and laser devices.
Collaborations
Heffner has collaborated with notable individuals in the field, including Gustav Edward Derkits, Jr. and Padman Parayanthal. These collaborations have likely enriched his work and contributed to the advancements in semiconductor technology.
Conclusion
William R. Heffner is a distinguished inventor whose work in semiconductor technology has led to innovative solutions in laser circuits and devices. His patents reflect a commitment to enhancing the efficiency and integration of semiconductor optoelectronic devices.
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.