Company Filing History:
Years Active: 1992-1999
Title: Innovations by David B Doan
Introduction
David B Doan is a notable inventor based in San Diego, CA. He has made significant contributions to the field of technology, particularly in cellular communication and fluid line systems. With a total of 3 patents, his work showcases a blend of innovation and practicality.
Latest Patents
One of his latest patents is the "Cellular telephone interface system for AMPS and CDMA data services." This invention allows for automatic selection between AMPS and CDMA cellular transmission protocols for data transmissions. The system includes a PC-modem card that connects the cellular telephone to various data sources, such as laptops or portable facsimile machines. The cellular telephone can transmit data using either AMPS or CDMA protocols, with the PC-modem card converting data signals accordingly. This invention also incorporates various data formatting and compressing protocols, enhancing the efficiency of cellular communication.
Another significant patent is the "Fluid line condition detection." This invention involves a compliant chamber in a fluid line that connects a fluid supply to a fluid receiver. The chamber alternates between fluid communication with upstream and downstream segments of the fluid line. By measuring pressure equalization pulses, the system can determine head pressure and identify issues such as occlusions or empty fluid supplies. This innovation is particularly useful in systems utilizing peristaltic pumps.
Career Highlights
David B Doan has worked with prominent companies such as Ivac Corporation and Qualcomm Incorporated. His experience in these organizations has contributed to his expertise in developing innovative technologies.
Collaborations
Throughout his career, David has collaborated with notable individuals, including James J Willkie and Marc Stephen Phillips. These collaborations have likely enriched his work and led to further advancements in his inventions.
Conclusion
David B Doan's contributions to technology through his patents reflect his innovative spirit and dedication to improving communication and fluid systems. His work continues to influence the fields he has engaged with, showcasing the importance of invention in advancing technology.