Q: My dad has 2 pattens out. How do I know if they are being used and should he have gotten paid on them?
Patents by Inventor xx. xx has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Multi frequency stacked patch antenna with improved frequency band isolation
Patent number: 6639558
Abstract: The invention is a stacked patch antenna having a plurality of patch antennas having respective operating frequency bands arranged in a stack, each antenna comprising a radiating conductive patch and a first cable comprising a plurality of coaxial conductors separated from each other by dielectric. A first conductor of the first cable carries the feed signal for the uppermost antenna and is conductively coupled to a null point of the radiating conductive patch of the uppermost antenna and passes through apertures at the null points of the other ones of the antennas in the stack.
It appears that your dad assigned his rights to Tyco. https://assignment.uspto.gov/patent/index.html#/patent/search/resultAbstract?id=6639558&type=patNum
Often this happens as someone is working for a company and they assign their rights over to their employer. Perhaps Tyco paid your dad directly. The assignment document does not specify what was paid to your father.
You should be proud of your father as it is not easy to invent something that makes it through the patent process.
Kevin E Flynn
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