Company Filing History:
15 out of 4,667 
4 out of 9,638 
2 out of 1,813 
Years Active: 1988-2014
Title: Richard Keith Karlquist: Innovator in Signal Processing Technologies
Introduction
Richard Keith Karlquist, based in Cupertino, CA, is a renowned inventor with a remarkable portfolio of 21 patents. His contributions to the field of signal processing and telecommunications have significantly advanced the way these technologies operate, impacting various industries and applications.
Latest Patents
Among Karlquist's latest innovations is the patent for "Downconversion of Comb Spectrum." This technology involves mixing a first comb spectrum with a local oscillator signal to create a second comb spectrum within a lower frequency range. The unique feature of this invention is that the first spectrum includes frequency components separated by a defined interval, while the local oscillator signal has a frequency offset, allowing for distinct lower and upper sideband responses that can be differentiated based on this offset.
Another significant patent is for "Split Band Signal Processing," which outlines a split-band system designed for processing a broadband input signal. In this system, a signal divider separates the input signal into higher and lower frequency bands. The lower frequency band is managed through a dedicated circuit path, while the higher frequency band is processed through another, ensuring that both paths have equal group delays. This innovation enhances the efficiency and performance of signal processing systems.
Career Highlights
Karlquist has made substantial contributions throughout his career, working with prominent companies such as Agilent Technologies, Inc. and Hewlett-Packard Company. His experience in these leading organizations has allowed him to refine his skills and drive innovation in signal processing technologies.
Collaborations
Throughout his career, Richard Karlquist collaborated with several notable professionals, including John Dwight Larson, III and Herbert L Ko. These partnerships have not only contributed to his personal success but also to the advancement of technologies within the industry.
Conclusion
Richard Keith Karlquist stands out as a visionary inventor in the realm of signal processing and telecommunications. His extensive patent portfolio highlights his commitment to innovation and excellence in technology development. With each invention, Karlquist continues to pave the way for future advancements that will shape the industry for years to come.
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.