Location History:
- Chicago, IL (US) (1990 - 1993)
- Livermore, CA (US) (2005)
- Dublin, CA (US) (2001 - 2007)
- San Francisco, CA (US) (2003 - 2022)
Company Filing History:
13 out of 15 
8 out of 8 
5 out of 15,458 
Years Active: 1990-2022
Title: Waleed Sami Haddad: Innovator in Optical and Audio Technologies
Introduction
Waleed Sami Haddad, based in San Francisco, CA, is a prolific inventor with an impressive portfolio of 43 patents. His innovations span across the fields of optical recognition and audio technology, showcasing his ability to revolutionize how we interact with devices.
Latest Patents
Haddad's latest patents include groundbreaking inventions such as the **Under-screen fingerprint reader**. This optical reader apparatus is designed to detect the epidermal ridges of a body part using specular reflection contrast detection. It features a display with a transparent cover and an array of active pixels that serve as the apparatus's illuminator. The system includes a pinhole array and an optical sensor, which work together to read signals from the photosensors while controlling illumination according to a predefined scanning pattern.
Another notable invention is the **Active audio calling device identification system**. This innovative system identifies the device used to place a call to an enterprise call center and provides details about the network path involved. Utilizing active 'pinging' within the audio channel during the initial moments of a call, it compares audio tones sent from the callee to those recorded from the caller, thereby characterizing the calling device and flagging any suspicious activity.
Career Highlights
Throughout his career, Waleed Haddad has made significant contributions to technology, particularly while working with **Vysk Communications, Inc.** His work has enriched the fields of communications and security, making important strides in enhancing user experience and safety in technological interactions.
Collaborations
In his journey as an inventor, Haddad has collaborated with prominent professionals in the industry, including Victor E. Cocchia and James Edward Trebes. Their joint efforts have likely fostered innovation, combining their expertise to push the boundaries of current technologies.
Conclusion
Waleed Sami Haddad stands out as a visionary inventor whose patents reflect a deep understanding of optical and audio technologies. His work not only enhances user interaction but also contributes to the broader technological landscape. With each invention, Haddad continues to pave the way for future innovations in the tech industry.
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.