Location History:
- Freemont, CA (US) (1993)
- Fremont, CA (US) (1985 - 2009)
Company Filing History:
4 out of 17 
3 out of 17 
2 out of 4 Years Active: 1985-2009
Title: Henry V Allen: Innovator in Pressure Sensor Technology
Introduction
Henry V Allen is a notable inventor based in Fremont, CA, with a remarkable portfolio of 16 patents. His work primarily focuses on advancements in pressure sensor technology, showcasing his expertise in micro-machining techniques.
Latest Patents
Among his latest patents, Allen has developed methods and apparatus for pressure sensors that utilize a backside cavity with a substantially vertical interior sidewall. One of his innovations involves a pressure sensor adjustment using a backside mask, which features a cross-shaped opening that can be modified to enhance sensor sensitivity. This design includes rounded corners to minimize peak stress and allows for the routing of a sensing conductor over these corners to detect potential breakage. Another significant patent details an extremely low-cost pressure sensor achieved through deep reactive ion etching. This invention includes a diaphragm with a boss manufactured through a two-step process, ensuring that the boss thickness remains independent of the starting material's thickness. Additionally, it offers various shapes for the backside cavity to reduce the risk of crystalline fractures while concentrating stress on piezoresistive sensing elements.
Career Highlights
Throughout his career, Allen has made significant contributions to the field of pressure sensors. He has worked with reputable companies such as Silicon Microstructures, Inc. and Ic Sensors Inc., where he has applied his innovative ideas to real-world applications.
Collaborations
Allen has collaborated with notable professionals in the industry, including James W. Knutti and Stephen C. Terry. Their combined expertise has likely contributed to the advancement of pressure sensor technologies.
Conclusion
Henry V Allen's contributions to pressure sensor technology through his patents and collaborations highlight his role as a leading innovator in the field. His work continues to influence advancements in sensor design and functionality.
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.